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Liu Y, Wang X, Wen Y, Cai H, Song X, Zhang Z. Effects of freeze-thaw cycles on soil greenhouse gas emissions: A systematic review. Environ Res 2024; 248:118386. [PMID: 38316387 DOI: 10.1016/j.envres.2024.118386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/20/2024] [Accepted: 01/30/2024] [Indexed: 02/07/2024]
Abstract
In the context of global warming, increasingly widespread and frequent freezing and thawing cycles (FTCs) will have profound effects on the biogeochemical cycling of soil carbon and nitrogen. FTCs can increase soil greenhouse gas (GHG) emissions by reducing the stability of soil aggregates, promoting the release of dissolved organic carbon, decreasing the number of microorganisms, inducing cell rupture, and releasing carbon and nitrogen nutrients for use by surviving microorganisms. However, the similarity and disparity of the mechanisms potentially contributing to changes in GHGs have not been systematically evaluated. The present study consolidates the most recent findings on the dynamics of soil carbon and nitrogen, as well as GHGs, in relation to FTCs. Additionally, it analyzes the impact of FTCs on soil GHGs in a systematic manner. In this study, particular emphasis is given to the following: (i) the reaction mechanism involved; (ii) variations in soil composition in different types of land (e.g., forest, peatland, farmland, and grassland); (iii) changes in soil structure in response to cycles of freezing temperatures; (iv) alterations in microbial biomass and community structure that may provide further insight into the fluctuations in GHGs after FTCs. The challenges identified included the extension of laboratory-scale research to ecosystem scales, the performance of in-depth investigation of the coupled effects of carbon, nitrogen, and water in the freeze-thaw process, and analysis of the effects of FTCs through the use of integrated research tools. The results of this study can provide a valuable point of reference for future experimental designs and scientific investigations and can also assist in the analysis of the attributes of GHG emissions from soil and the ecological consequences of the factors that influence these emissions in the context of global permafrost warming.
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Affiliation(s)
- Yuqing Liu
- Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University, Shenyang, 110044, China
| | - Xiaochu Wang
- Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University, Shenyang, 110044, China
| | - Yujuan Wen
- Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University, Shenyang, 110044, China; Northeast Geological S&T Innovation Center of China Geological Survey, Shenyang, 110000, China; Key Laboratory of Black Soil Evolution and Ecological Effect, Ministry of Natural Resources, Shenyang, 110000, China.
| | - Haoxuan Cai
- Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University, Shenyang, 110044, China
| | - Xiaoming Song
- Key Laboratory of Regional Environment and Eco-restoration, Ministry of Education, Shenyang University, Shenyang, 110044, China
| | - Zhipeng Zhang
- Sichuan Geological Environment Survey and Research Center, Sichuan, 610000, China.
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2
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Rhymes JM, Evans D, Laudone G, Schofield HK, Fry E, Fitzsimons MF. Biochar improves fertility in waste derived manufactured soils, but not resilience to climate change. Sci Total Environ 2024; 923:171387. [PMID: 38432382 DOI: 10.1016/j.scitotenv.2024.171387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 02/15/2024] [Accepted: 02/28/2024] [Indexed: 03/05/2024]
Abstract
We present a soil manufactured from waste materials, which could replace the use of peat and topsoil in plant production and reduce the pressure on natural soil resources. We tested the effect of the manufactured soil on ecosystem functions and microbial communities with and without plants present, and with and without biochar addition (Experiment 1). The resilience of the soil in response to drought and flooding, and also the effect of biochar was also tested (Experiment 2). Biochar increased soil C and N regardless of plant presence and negated the effect of the plant on soil peroxidase enzyme activity. The manufactured soil was largely resilient to drought, but not flooding, with negative impacts on microbial communities. Results indicate that biochar could improve soil properties, but not resilience to climatic perturbations. Results suggest that manufactured soils amended with biochar could offer a useful alternative to natural soil in many contexts.
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Affiliation(s)
- Jennifer M Rhymes
- Biogeochemistry Research Centre, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK; UK Centre for Ecology and Hydrology, Deiniol Road, Bangor, Gwynedd LL57 2UW, UK.
| | - Daniel Evans
- Biogeochemistry Research Centre, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
| | - Giuliano Laudone
- Biogeochemistry Research Centre, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
| | - H Kate Schofield
- Biogeochemistry Research Centre, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
| | - Ellen Fry
- Edge Hill University, St Helens Road, Ormskirk, Lancashire L39 4QP, UK
| | - Mark F Fitzsimons
- Biogeochemistry Research Centre, University of Plymouth, Drake Circus, Plymouth PL4 8AA, UK
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3
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Appoo J, Bunbury N, Jaquemet S, Graham NA. Seabird nutrient subsidies enrich mangrove ecosystems and are exported to nearby coastal habitats. iScience 2024; 27:109404. [PMID: 38510135 PMCID: PMC10952037 DOI: 10.1016/j.isci.2024.109404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/19/2024] [Accepted: 02/29/2024] [Indexed: 03/22/2024] Open
Abstract
Eutrophication by human-derived nutrient enrichment is a major threat to mangroves, impacting productivity, ecological functions, resilience, and ecosystem services. Natural mangrove nutrient enrichment processes, however, remain largely uninvestigated. Mobile consumers such as seabirds are important vectors of cross-ecosystem nutrient subsidies to islands but how they influence mangrove ecosystems is poorly known. We assessed the contribution, uptake, cycling, and transfer of nutrients from seabird colonies in remote mangrove systems free of human stressors. We found that nutrients from seabird guano enrich mangrove plants, reduce nutrient limitations, enhance mangrove invertebrate food webs, and are exported to nearby coastal habitats through tidal flow. We show that seabird nutrient subsidies in mangroves can be substantial, improving the nutrient status and health of mangroves and adjacent coastal habitats. Conserving mobile consumers, such as seabirds, is therefore vital to preserve and enhance their role in mangrove productivity, resilience, and provision of diverse functions and services.
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Affiliation(s)
- Jennifer Appoo
- UMR ENTROPIE, Université de La Réunion, 97744 Saint Denis Cedex 9, La Réunion, France
- Seychelles Islands Foundation, Victoria, Mahé, Seychelles
| | - Nancy Bunbury
- Seychelles Islands Foundation, Victoria, Mahé, Seychelles
- Centre for Ecology and Conservation, University of Exeter, Cornwall TR10 9FE, UK
| | - Sébastien Jaquemet
- UMR ENTROPIE, Université de La Réunion, 97744 Saint Denis Cedex 9, La Réunion, France
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Tiano J, Witbaard R, Gerkema T, Soetaert K. Biogeochemical dynamics in a marine storm demonstrates differences between natural and anthropogenic impacts. Sci Rep 2024; 14:8802. [PMID: 38627480 PMCID: PMC11021396 DOI: 10.1038/s41598-024-59317-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 04/09/2024] [Indexed: 04/19/2024] Open
Abstract
This study explores the impact of a wind storm on sediment resuspension and marine biogeochemical dynamics. Additionally, the storm took place during an expedition researching bottom trawling, enabling the direct comparison of certain natural and fisheries-related disturbances. The storm was initiated by a decline in atmospheric pressure and a 2 h period of gale force winds, which was followed by over 40 h of elevated bottom currents. Storm induced turbidity, potentially a cumulative post-fishing impact, was remarkably higher compared to what was observed in a recent trawling event. Storm-induced mixing and movement of water masses led to decreased silicate and increased phosphate concentrations in the water column, accompanied by lower salinity and higher fluorescence. The erosion depth of the seabed averaged around 0.3 cm during the peak turbidity period. Trawl-induced erosion in the area has been measured at over twice that depth, and has been linked to intermittent reductions in near-bed oxygen levels. In contrast, storm-induced turbidity coincided with increased oxygen due to wave mixing, suggesting inherent differences in how trawling and storms can oxidize reduced substances. These findings suggest that storms have a greater regional impact, whereas the local impacts of bottom trawling on biogeochemistry can be more significant.
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Affiliation(s)
- Justin Tiano
- Wageningen Marine Research, Wageningen University & Research, IJmuiden, The Netherlands.
- Department of Estuarine and Delta Systems, Royal Netherlands Institute for Sea Research (NIOZ), Yerseke, The Netherlands.
| | - Rob Witbaard
- Department of Estuarine and Delta Systems, Royal Netherlands Institute for Sea Research (NIOZ), Yerseke, The Netherlands
| | - Theo Gerkema
- Department of Estuarine and Delta Systems, Royal Netherlands Institute for Sea Research (NIOZ), Yerseke, The Netherlands
| | - Karline Soetaert
- Department of Estuarine and Delta Systems, Royal Netherlands Institute for Sea Research (NIOZ), Yerseke, The Netherlands
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Regev S, Carmel Y, Schlabing D, Gal G. Climate change impact on sub-tropical lakes - Lake Kinneret as a case study. Sci Total Environ 2024; 921:171163. [PMID: 38402963 DOI: 10.1016/j.scitotenv.2024.171163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 01/29/2024] [Accepted: 02/19/2024] [Indexed: 02/27/2024]
Abstract
Climate change is anticipated to alter lake ecosystems by affecting water quality, potentially resulting in loss of ecosystem services. Subtropical lakes have high temperatures to begin with and are expected to exhibit higher temperatures all year round which might affect the thermal structure and ecological processes in a different manner than lakes in temperate zones. In this study the ecosystem response of the sub-tropical Lake Kinneret to climate change was explored using lake ecosystem models. Projection reliability was increased by using a weather generator and ensemble modelling, confronting uncertainty of both climate projections and lake models. The study included running two 1D hydrodynamic-biogeochemical models over one thousand realizations of two gradual temperature increase scenarios that span over 49 years. Our predictions show that an increase in air temperature would have subtle effects on stratification properties but may result in considerable changes to biogeochemical processes. Water temperature rise would cause a reduction in dissolved oxygen. Both of these changes would produce elevated phosphate and lowered ammonium concentrations. In turn, these changes are predicted to modify the phytoplankton community, expressed chiefly in increased cyanobacteria blooms at the expense of green phytoplankton and dinoflagellates; these changes may culminate in overall reduction of primary production. Identification of these trends would not be possible without the use of many realizations of climate scenarios. The use of ensemble modelling increased prediction reliability and highlighted elements of uncertainty. Though we use Lake Kinneret, the patterns identified most likely indicate processes that are expected in sub-tropical lakes in general.
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Affiliation(s)
- Shajar Regev
- Kinneret Limnological Laboratory, Israel Oceanographic and Limnological Research, Migdal 14950000, Israel; Faculty of Civil and Environmental Engineering, The Technion-Israel Institute of Technology, Haifa 3200003, Israel.
| | - Yohay Carmel
- Faculty of Civil and Environmental Engineering, The Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Dirk Schlabing
- University of Stuttgart, Institute for Modelling Hydraulic and Environmental Systems, 70569 Stuttgart, Germany
| | - Gideon Gal
- Kinneret Limnological Laboratory, Israel Oceanographic and Limnological Research, Migdal 14950000, Israel
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Finkel PL, Carrizo D, Rasmussen KR, Knudsen NAT, Parro V, Sánchez-García L. Lipid-based paleoecological and biogeochemical reconstruction of Store Saltsø, an extreme lacustrine system in SW Greenland. Sci Total Environ 2024; 921:171199. [PMID: 38408664 DOI: 10.1016/j.scitotenv.2024.171199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/07/2024] [Accepted: 02/21/2024] [Indexed: 02/28/2024]
Abstract
Polar lakes harbour a unique biogeochemistry that reflects the implications of climatic fluctuations against a susceptible yet extreme environment. In addition to polar, Store Saltsø (Kangerlussuaq, southwestern Greenland) is an endorheic lake with alkaline and oligotrophic waters that host a distinctive ecology adapted to live in such particular physico-chemical and environmental conditions. By exploring the sedimentary record of Store Saltsø at a molecular and compound-specific isotopic level, we were able to understand its ecology and biogeochemical evolution upon climate change. We employed lipid biomarkers to identify biological sources and metabolic traits in different environmental samples (shore terrace, sediment core, and white precipitates at the shore), and their succession over time to reconstruct the lake paleobiology. Different molecular ratios and geochemical proxies provided further insights toward the evolution of environmental conditions in the frame of the deglaciation history of Kangerlussuaq. The relative abundance of terrestrial (i.e., plant derived) biomarkers (odd long-chain n-alkanes, even long-chain n-alkanols, and phytosterols) in the upper half of the shore terrace versus the relatively more present aquatic biomarkers (botryococcenes and long-chain alkenones) in its lower half revealed higher lake water levels in the past. Moreover, the virtual absence of organics in the deepest section of the sediment core (32-29 cm depth) suggested that the lake did not yet exist at the northwestern shore of Store Saltsø ∼5100 years ago. According to the relative abundance of lipid biomarkers detected in the adjacent section above (29-25 cm depth), we hypothesize that the northwestern shore of Store Saltsø formed ∼4900 years ago. By combining the molecular and compound-specific isotopic analysis of lipids in a ∼360 cm sedimentary sequence, we recreated the paleobiology and evolution of an extreme lacustrine environment suitable for the study of the limits of life and the effects of climate warming.
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Affiliation(s)
- Pablo L Finkel
- Centro de Astrobiología (CAB), CSIC-INTA, Madrid, Spain; Department of Physics and Mathematics, Department of Automatics, University of Alcalá, Madrid, Spain
| | | | | | | | - Victor Parro
- Centro de Astrobiología (CAB), CSIC-INTA, Madrid, Spain
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Westmoreland AG, Schafer TB, Breland KE, Beard AR, Osborne TZ. Sucralose (C 12H 19Cl 3O 8) impact on microbial activity in estuarine and freshwater marsh soils. Environ Monit Assess 2024; 196:451. [PMID: 38613723 DOI: 10.1007/s10661-024-12610-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Accepted: 04/04/2024] [Indexed: 04/15/2024]
Abstract
As the general population's diet has shifted to reflect current weight-loss trends, there has been an increase in zero-calorie artificial sweetener usage. Sucralose (C12H19Cl3O8), commonly known as Splenda® in the USA, is a primary example of these sweeteners. In recent years, sucralose has been identified as an environmental contaminant that cannot easily be broken down via bacterial decomposition. This study focuses on the impact of sucralose presence on microbial communities in brackish and freshwater systems. Microbial respiration and fluorescence were measured as indicators of microbial activity in sucralose-dosed samples taken from both freshwater and estuarine marsh environments. Results showed a significant difference between microbial concentration and respiration when dosed with varying levels of sucralose. Diatom respiration implied a negative correlation of community abundance with sucralose concentration. The freshwater cyanobacterial respiration increased in the presence of sucralose, implying a positive correlation of community abundance with sucralose concentration. This was in direct contrast to its brackish water counterpart. However, further investigation is necessary to confirm any potential utility of these communities in the breakdown of sucralose in the marsh environment.
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Affiliation(s)
- Amelia G Westmoreland
- Whitney Laboratory for Marine Biosciences, University of Florida, St. Augustine, FL, USA.
| | - Tracey B Schafer
- Whitney Laboratory for Marine Biosciences, University of Florida, St. Augustine, FL, USA
| | - Kendall E Breland
- Whitney Laboratory for Marine Biosciences, University of Florida, St. Augustine, FL, USA
- Soil, Water and Ecosystem Sciences Department, University of Florida, Gainesville, FL, USA
| | - Anna R Beard
- Whitney Laboratory for Marine Biosciences, University of Florida, St. Augustine, FL, USA
| | - Todd Z Osborne
- Whitney Laboratory for Marine Biosciences, University of Florida, St. Augustine, FL, USA
- Soil, Water and Ecosystem Sciences Department, University of Florida, Gainesville, FL, USA
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Fortune J, van de Kamp J, Holmes B, Bodrossy L, Gibb K, Kaestli M. Dynamics of nitrogen genes in intertidal sediments of Darwin Harbour and their connection to N- biogeochemistry. Mar Environ Res 2024; 198:106500. [PMID: 38626627 DOI: 10.1016/j.marenvres.2024.106500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/29/2024] [Accepted: 04/08/2024] [Indexed: 04/18/2024]
Abstract
Microbial mediated nitrogen (N) transformation is subject to multiple controlling factors such as prevailing physical and chemical conditions, and little is known about these processes in sediments of wet-dry tropical macrotidal systems such as Darwin Harbour in North Australia. To understand key transformations, we assessed the association between the relative abundance of nitrogen cycling genes with trophic status, sediment partition and benthic nitrogen fluxes in Darwin Harbour. We analysed nitrogen cycling gene abundance using a functional gene microarray and quantitative PCRs targeting the denitrification gene (nosZ) and archaeal ammonia oxidation (AOA.1). We found a significant negative correlation between archaeal ammonia oxidation and silicate flux (P = 0.004), an indicator for diatom and benthic microalgal activity. It is suggested that the degradation of the diatomaceous organic matter generates localised anoxic conditions and inhibition of nitrification. Abundance of the nosZ gene was negatively correlated with nutrient load. The lowest nosZ gene levels were in hyper-eutrophic tidal creeks with anoxic conditions and increased levels of sulphide limiting the coupling of nitrification-denitrification (P = 0.016). Significantly higher levels of nosZ genes were measured in the surface (top 2 cm) compared to bulk sediment (top 10 cm) and there was a positive association with di-nitrogen flux (N2) in surface (P = 0.024) but not bulk sediment. This suggests that denitrifiers are most active in surficial sediment at the sediment-water interface. Elevated levels of nosZ genes also occurred in the sediments of tidal creek mouths and mudflats with these depositional zones combining the diffuse and seaward supply of nitrogen and carbon supporting denitrifiers. N-cycle molecular assays using surface sediments show promise as a rapid monitoring technique for impact assessment and measuring ecosystem function. This is particularly pertinent for tropical macrotidal systems where systematic monitoring is sparse and in many cases challenged by climatic extremes and remoteness.
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Affiliation(s)
- Julia Fortune
- Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, Northern Territory, Australia; Department of Environment, Parks and Water Security, Northern Territory Government, Australia.
| | | | | | | | - Karen Gibb
- Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, Northern Territory, Australia
| | - Mirjam Kaestli
- Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, Northern Territory, Australia
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Barquero JI, Lorenzo S, Rivera S, González-Valoys AC, García-Ordiales E, Esbrí JM, Higueras P. Biogeochemical prospecting of metallic critical raw materials: soil to plant transfer in SW Ciudad Real Province, Spain. Environ Sci Pollut Res Int 2024:10.1007/s11356-024-33097-0. [PMID: 38580874 DOI: 10.1007/s11356-024-33097-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 03/22/2024] [Indexed: 04/07/2024]
Abstract
The soil-plant transfer of trace elements is a complex system in which many factors are involved such as the availability and bioavailability of elements in the soil, climate, pedological parameters, and the essential or toxic character of the elements. The present study proposes the evaluation of the use of multielement contents in vascular plants for prospecting ore deposits of trace elements of strategic interest for Europe. To accomplish this general goal, a study of the soil-plant transfer of major and trace elements using Quercus ilex as a study plant has been developed in the context of two geological domains with very different characteristics in geological terms and in the presence of ore deposits: the Almadén syncline for Hg and the Guadalmez syncline for Sb. The results have made it possible to differentiate geological domains not only in terms of individual elements, but also as a combination of major and trace elements using Factor Analysis. The bioconcentration factors have demonstrated the uptake of macronutrients and micronutrients in very high concentrations but these were barely dependent, or even independent of the concentrations in the soil, in addition to high values of this factor for Sb. The Factor Analysis allowed for the differentiation of geogenic elements from other linked to stibnite ore deposits (Sb, S, and Cu). This element (Sb) can be uptake by Quercus ilex via the root and from there translocating it to the leaves, showing a direct relation between concentrations in soil and plants. This finding opens the possibility of using Quercus ilex leaves for biogeochemical prospecting of geological domains or lithological types of interest to prospect for Sb deposits.
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Affiliation(s)
- José Ignacio Barquero
- Instituto de Geología Aplicada, Universidad de Castilla-La Mancha, Pl. Manuel Meca 1, 13400, Almadén, Ciudad Real, Spain
- Escuela de Ingeniería Minera E Industrial de Almadén, 13400, Almadén, Ciudad Real, Spain
| | - Saturnino Lorenzo
- Instituto de Geología Aplicada, Universidad de Castilla-La Mancha, Pl. Manuel Meca 1, 13400, Almadén, Ciudad Real, Spain
- Escuela de Ingeniería Minera E Industrial de Almadén, 13400, Almadén, Ciudad Real, Spain
| | - Sofía Rivera
- Instituto de Geología Aplicada, Universidad de Castilla-La Mancha, Pl. Manuel Meca 1, 13400, Almadén, Ciudad Real, Spain
- IES Maestro Juan de Ávila, Ronda de Calatrava 1, Ciudad Real, Spain
| | - Ana C González-Valoys
- Facultad de Ingeniería Civil, Universidad Tecnológica de Panamá, Ricardo J. Alfaro Avenue, Dr. Víctor Levi Sasso University Campus, 0819-07289, Panamá City, Panamá
| | - Efrén García-Ordiales
- ISYMAResearch Group, Mining, Energy and Materials Engineering School, University of Oviedo, C/ Independencia 13, 33011, Oviedo, Spain
| | - José María Esbrí
- Departamento de Mineralogía y Petrología, Universidad Complutense de Madrid, Antonio Novais 12, 28040, Madrid, Spain.
| | - Pablo Higueras
- Instituto de Geología Aplicada, Universidad de Castilla-La Mancha, Pl. Manuel Meca 1, 13400, Almadén, Ciudad Real, Spain
- Escuela de Ingeniería Minera E Industrial de Almadén, 13400, Almadén, Ciudad Real, Spain
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Tisserand R, van der Ent A, Nkrumah PN, Didier S, Sumail S, Morel JL, Echevarria G. Nickel stocks and fluxes in a tropical agromining 'metal crop' farming system in Sabah (Malaysia). Sci Total Environ 2024; 919:170691. [PMID: 38325468 DOI: 10.1016/j.scitotenv.2024.170691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 01/07/2024] [Accepted: 02/02/2024] [Indexed: 02/09/2024]
Abstract
Nickel hyperaccumulator plants play a major role in nickel recycling in ultramafic ecosystems, and under agromining the nickel dynamics in the farming system will be affected by removal of nickel-rich biomass. We investigated the biogeochemical cycling of nickel as well as key nutrients in an agromining operation that uses the metal crop Phyllanthus rufuschaneyi in the first tropical metal farm located in Borneo (Sabah, Malaysia). For two years, this study monitored nine 25-m2 plots and collected information on weather, biomass exportation, water, and litter fluxes to the soil. Without harvesting, nickel inputs and outputs had only minor contributions (<1 %) to the total nickel budget in this system. The nickel cycle was mainly driven by internal fluxes, particularly plant uptake, litterfall and throughfall. After two years of cropping, the nickel litter flux corresponded to 50 % of the total nickel stock in the aerial biomass (3.1 g m-2 year-1). Nickel was slowly released from the litter; after 15 months of degradation, 60 % of the initial biomass and the initial nickel quantities were still present in the organic layer. Calcium, phosphorus and potassium budgets in the system were negative without fertilisation. Unlike what is observed for nickel, sustained agromining would thus lead to a strong depletion of calcium stocks if mineral weathering cannot replenish it.
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Affiliation(s)
- Romane Tisserand
- Université de Lorraine, INRAE, LSE, F-54000 Nancy, France; Departamento de Agronomia, Universidade Federal Rural de Pernambuco, Recife, PE 52171900, Brazil
| | - Antony van der Ent
- Université de Lorraine, INRAE, LSE, F-54000 Nancy, France; Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, QLD 4072, Australia; Laboratory of Genetics, Wageningen University and Research, 6708 PW Wageningen, the Netherlands
| | - Philip Nti Nkrumah
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Serge Didier
- INRAE, Centre de Nancy, Ecosystèmes Forestiers, 54280, Champenoux, France
| | | | | | - Guillaume Echevarria
- Université de Lorraine, INRAE, LSE, F-54000 Nancy, France; Centre for Mined Land Rehabilitation, Sustainable Minerals Institute, The University of Queensland, Brisbane, QLD 4072, Australia; Econick, 54300 Lunéville, France.
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11
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Gao X, Han Z, Zhao Y, Zhou G, Lyu X, Qi Z, Liu F, Tucker ME, Steiner M, Han C. Interaction of microorganisms with carbonates from the micro to the macro scales during sedimentation: Insights into the early stage of biodegradation. J Environ Manage 2024; 356:120714. [PMID: 38537463 DOI: 10.1016/j.jenvman.2024.120714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 02/21/2024] [Accepted: 03/19/2024] [Indexed: 04/07/2024]
Abstract
The assembly process of Organic Matter (OM) from single molecules to polymers and the formation process of Ca-CO3 ion-pairs are explored at the micro-scale, and then the relationship between OM and carbonate based on the results of microbially-induced carbonate precipitation (MICP) laboratory experiments is established at the macro-scale. Molecular dynamics (MD) is used to model the assembly of OM (a) in an aqueous solution, (b) on surfaces of calcite (10 1‾ 4) crystals and (c) on defective calcite (101‾ 4) crystal surfaces. From the MICP experiments, carbonate minerals containing abundant OM were precipitated and were characterized by Scanning Electron Microscopy (SEM), X-Ray Diffractometry (XRD) and Fourier Transform Infrared Spectroscopy (FTIR). The results of the MD show that OM is assembled into polymers in all three simulation systems. Although the Ca-CO3 ion-pairs and OM were briefly combined, the aggregation assembly of OM molecules and the precipitation of carbonate calcium are not related in the long run. The highly specific surface area of the defective calcite shows an increase in the adsorption of OM. The van der Waals forces, which are primarily responsible for controlling the assembly of OM molecules, increase with the degree of aggregation. According to the MICP experiments, OM is enriched on the mineral surfaces, and more OM is found at the steps of defective crystals with their larger surface areas. Through MD and MICP laboratory experiments, this work systematically describes the interaction of OM and carbonate minerals from the micro to the macro scales, and this provides insight into the interaction between OM and carbonates and biogeochemical processes related to the accumulation of OM in sediments.
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Affiliation(s)
- Xiao Gao
- Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; Laboratory for Marine Mineral Resources, Center for Isotope Geochemistry and Geochronology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China; College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Zuozhen Han
- Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; Laboratory for Marine Mineral Resources, Center for Isotope Geochemistry and Geochronology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Yanyang Zhao
- Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; Laboratory for Marine Mineral Resources, Center for Isotope Geochemistry and Geochronology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Gang Zhou
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Xiaowei Lyu
- Qingdao Qiushi Industrial Technology Research Institute, Qingdao 266427, China
| | - Zhenhua Qi
- Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Fang Liu
- College of Chemical Engineering, China University of Petroleum, Qingdao 266580, China; State Key Laboratory of Petroleum Pollution Control, Beijing 102206, China
| | - Maurice E Tucker
- School of Earth Sciences, University of Bristol, Bristol BS8 1RJ, UK; Cabot Institute, University of Bristol, Cantock's Close, Bristol BS8 1UJ, UK
| | - Michael Steiner
- Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; Department of Earth Sciences, Freie Universität Berlin, Malteserstrasse 74-100, Haus D, Berlin 12249, Germany
| | - Chao Han
- Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals, College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; Laboratory for Marine Mineral Resources, Center for Isotope Geochemistry and Geochronology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China.
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12
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Liu T, Bao K, Chen M, Neupane B, Gao C, Zaccone C. Human activity has increasingly affected recent carbon accumulation in Zhanjiang mangrove wetland, South China. iScience 2024; 27:109038. [PMID: 38361628 PMCID: PMC10867414 DOI: 10.1016/j.isci.2024.109038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 12/04/2023] [Accepted: 01/23/2024] [Indexed: 02/17/2024] Open
Abstract
Mangrove wetlands are an important component of blue carbon (C) ecosystems, although the anthropogenic impact on organic C accumulation rate (OCAR) in mangrove wetlands is not yet clear. Three sediment cores were collected from Zhanjiang Gaoqiao Mangrove Reserve in Southern China, dated by 210Pb and 137Cs, and physico-chemical parameters measured. Results show that the OCARs in mangroves and grasslands have significantly increased by 4.4 and 1.3 times, respectively, since 1950, which is consistent with the transformation of organic C sources and the increase of sedimentation rate. This increment is due to increased soil erosion and nutrient enrichment caused by land use change and the discharge of fertilizer runoff and aquaculture wastewater. This study provides clear evidence for understanding the changes in organic C accumulation processes during the Anthropocene and is conducive to promoting the realization of C peak and neutrality targets.
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Affiliation(s)
- Ting Liu
- School of Geographical Sciences, South China Normal University, Guangzhou 510631, China
| | - Kunshan Bao
- School of Geographical Sciences, South China Normal University, Guangzhou 510631, China
| | - Minqi Chen
- School of Geographical Sciences, South China Normal University, Guangzhou 510631, China
| | - Bigyan Neupane
- School of Geographical Sciences, South China Normal University, Guangzhou 510631, China
| | - Changjun Gao
- Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry, Guangzhou 510520, China
| | - Claudio Zaccone
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
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Zhang LX, Zhou B, Song B, Zhao C, Adams JM, Xu Z. Significant carbon isotopic fractionation during early formation of biological soil crusts with indications for dryland carbon cycling. iScience 2024; 27:109114. [PMID: 38375221 PMCID: PMC10875157 DOI: 10.1016/j.isci.2024.109114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 01/05/2024] [Accepted: 01/31/2024] [Indexed: 02/21/2024] Open
Abstract
Clarifying the accumulation and decomposition of soil organic carbon (SOC) is crucial for comprehending carbon cycling in terrestrial ecosystems. SOC enrichment and decomposition lead to the fractionation of stable carbon isotopes, a complex process influenced by various factors, including microbes. However, this fractionation process during early soil formation and the role of microorganisms remain poorly explored. This study investigated the relative composition of stable carbon isotopes (δ13C) of recently formed biological soil crusts (BSCs) on stabilized sand dunes in the Tengger Desert, Northern China. A notable increase in δ13C was observed during early BSC development, likely driven by cyanobacteria's direct fixation of CO2. Yet, δ13C values of BSCs gradually declined, approaching those of soils under native vegetation, probably linked to microbial succession within the BSCs. This finding highlights the potential microbial influence on early soil carbon turnover and underscores the effectiveness of isotope tracers for studying this process.
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Affiliation(s)
- Li-Xuan Zhang
- School of Geography and Ocean Science, Nanjing University, 163 Xianlin Boulevard, Nanjing 210023, China
| | - Bin Zhou
- School of Earth Sciences and Engineering, Nanjing University, 163 Xianlin Boulevard, Nanjing 210023, China
| | - Bin Song
- School of Geography and Ocean Science, Nanjing University, 163 Xianlin Boulevard, Nanjing 210023, China
| | - Cheng Zhao
- School of Geography and Ocean Science, Nanjing University, 163 Xianlin Boulevard, Nanjing 210023, China
| | - Jonathan M. Adams
- School of Geography and Ocean Science, Nanjing University, 163 Xianlin Boulevard, Nanjing 210023, China
| | - Zhiwei Xu
- School of Geography and Ocean Science, Nanjing University, 163 Xianlin Boulevard, Nanjing 210023, China
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14
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Hassett E, Bohrer G, Kinsman-Costello L, Onyango Y, Pope T, Smith C, Missik J, Eberhard E, Villa J, McMurray SE, Morin T. Changes in inundation drive carbon dioxide and methane fluxes in a temperate wetland. Sci Total Environ 2024; 915:170089. [PMID: 38224896 DOI: 10.1016/j.scitotenv.2024.170089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/18/2023] [Accepted: 01/09/2024] [Indexed: 01/17/2024]
Abstract
Wetlands cycle carbon by being net sinks for carbon dioxide (CO2) and net sources of methane (CH4). Daily and seasonal temporal patterns, dissolved oxygen (DO) availability, inundation status (flooded or dry/partially flooded), water depth, and vegetation can affect the magnitude of carbon uptake or emissions, but the extent and interactive effects of these variables on carbon gas fluxes are poorly understood. We characterized the linkages between carbon fluxes and these environmental and temporal drivers at the Old Woman Creek National Estuarine Research Reserve (OWC), OH. We measured diurnal gas flux patterns in an upstream side channel (called the cove) using chamber measurements at six sites (three vegetated and three non-vegetated). We sampled hourly from 7 AM to 7 PM and monthly from July to October 2022. DO concentrations and water levels were measured monthly. Water inundation status had the most influential effect on carbon fluxes with flooded conditions supporting higher CH4 fluxes (0.39 μmol CH4 m-2 s-1; -1.23 μmol CO2 m-2 s-1) and drier conditions supporting higher CO2 fluxes (0.03 μmol CH4 m-2 s-1; 0.86 μmol CO2 m-2 s-1). When flooded, the wetland was a net CO2 sink; however, it became a source for both CH4 and CO2 when water levels were low. We compared chamber-based gas fluxes from the cove in flooded (July) and dry (August) months to fluxes measured with an eddy covariance tower whose footprint covers flooded portions of the wetland. The diurnal pattern of carbon fluxes at the tower did not vary with changing water levels but remained a CO2 sink and a CH4 source even when the cove where we performed the chamber measurements dried out. These results emphasize the role of inundation status on wetland carbon cycling and highlight the importance of fluctuating hydrologic patterns, especially hydrologic drawdowns, under changing climatic conditions.
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Affiliation(s)
- Erin Hassett
- SUNY College of Environmental Science and Forestry, Syracuse, NY, United States of America.
| | - Gil Bohrer
- Ohio State University, Columbus, OH, United States of America
| | | | - Yvette Onyango
- Ohio State University, Columbus, OH, United States of America
| | - Talia Pope
- Kent State University, Akron, OH, United States of America
| | - Chelsea Smith
- Kent State University, Akron, OH, United States of America
| | - Justine Missik
- Ohio State University, Columbus, OH, United States of America
| | - Erin Eberhard
- Kent State University, Akron, OH, United States of America
| | - Jorge Villa
- University of Louisiana at Lafayette, Lafayette, LA, United States of America
| | | | - Tim Morin
- SUNY College of Environmental Science and Forestry, Syracuse, NY, United States of America
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15
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Christensen S, Rousk K. Global N 2O emissions from our planet: Which fluxes are affected by man, and can we reduce these? iScience 2024; 27:109042. [PMID: 38333714 PMCID: PMC10850745 DOI: 10.1016/j.isci.2024.109042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024] Open
Abstract
In some places, N2O emissions have doubled during the last 2-3 decades. Therefore, it is crucial to identify N2O emission hotspots from terrestrial and aquatic systems. Large variation in N2O emissions occur in managed as well as in natural areas. Natural unmanaged tropical and subtropical wet forests are important N2O sources globally. Emission hotspots, often coupled to human activities, vary across climate zones, whereas N2O emissions are most often a few kg N ha-1 year-1 from arable soils, drained organic soils in the boreal and temperate zones often release 20-30 kg N ha-1 year-1. Similar high N2O emissions occur from some tropical crops like tea, palm oil and bamboo. This strong link between increased N2O emissions and human activities highlight the potential to mitigate large emissions. In contrast, water where oxic and anoxic conditions meet are N2O emission hotspots as well, but not possible to reduce.
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Affiliation(s)
- Søren Christensen
- Copenhagen University, Department of Biology, VOLT, Center for Volatile Interactions, Universitetsparken 15, 2100 Copenhagen, Denmark
| | - Kathrin Rousk
- Copenhagen University, Department of Biology, VOLT, Center for Volatile Interactions, Universitetsparken 15, 2100 Copenhagen, Denmark
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He Y, Yang Y, Chi W, Hu S, Chen G, Wang Q, Cheng K, Guo C, Liu T, Xia B. Biogeochemical cycling in paddy soils controls antimony transformation: Roles of iron (oxyhydr)oxides, organic matter and sulfate. J Hazard Mater 2024; 464:132979. [PMID: 37976844 DOI: 10.1016/j.jhazmat.2023.132979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 10/01/2023] [Accepted: 11/08/2023] [Indexed: 11/19/2023]
Abstract
In paddy fields, periodic flooding and drainage phases can significantly affect the availability of antimony (Sb), but the underlying mechanisms remain unclear. In this study, Sb-contaminated paddy soil was incubated under anaerobic (40 day) and subsequently aerobic (40-55 day) conditions. The Sb fractions was investigated and a kinetic model was established to quantitatively evaluate the main processes controlling Sb transformation. Under anaerobic conditions, the reductive dissolution of iron (Fe) (oxyhydr)oxides, the release of soil colloids, and dissolved organic carbon (DOC) could facilitate the release of Sb(V), while newly released Sb(V) were synchronously reduced to Sb(III) that could be incorporated into the solid phase (34.1%, 40 day) or precipitated as Sb2S3 (9.7%, 40 day). After soil aeration, a significant increase in dissolved and extracted Sb(V) (34.7%, 45 day) was observed due to the Sb(III) oxidization by the reactive oxygen species (ROS) generated from Fe(II) oxidization. The dissolved and extracted Sb(V) were simultaneously incorporated into the solid phase as the re-aggregation of soil colloids and DOC, and only contributed to 17.1% of the total Sb content at the end of aerobic phase (55 day). Our results elucidated the mechanisms about how biogeochemical Fe/S/C cycling jointly controlled Sb transformation in paddy systems.
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Affiliation(s)
- Yizhou He
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Yang Yang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Wenting Chi
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Shiwen Hu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Guojun Chen
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Qi Wang
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Kuan Cheng
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Chao Guo
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Tongxu Liu
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Bingqing Xia
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-environmental Pollution Control and Management, Guangdong Institute of Eco-environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China.
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17
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Ghaly TM, Focardi A, Elbourne LDH, Sutcliffe B, Humphreys WF, Jaschke PR, Tetu SG, Paulsen IT. Exploring virus-host-environment interactions in a chemotrophic-based underground estuary. Environ Microbiome 2024; 19:9. [PMID: 38291480 PMCID: PMC10829341 DOI: 10.1186/s40793-024-00549-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 01/08/2024] [Indexed: 02/01/2024]
Abstract
BACKGROUND Viruses play important roles in modulating microbial communities and influencing global biogeochemistry. There is now growing interest in characterising their ecological roles across diverse biomes. However, little is known about viral ecology in low-nutrient, chemotrophic-based environments. In such ecosystems, virus-driven manipulation of nutrient cycles might have profound impacts across trophic levels. In particular, anchialine environments, which are low-energy underground estuaries sustained by chemotrophic processes, represent ideal model systems to study novel virus-host-environment interactions. RESULTS Here, we employ metagenomic sequencing to investigate the viral community in Bundera Sinkhole, an anchialine ecosystem rich in endemic species supported by microbial chemosynthesis. We find that the viruses are highly novel, with less than 2% representing described viruses, and are hugely abundant, making up as much as 12% of microbial intracellular DNA. These highly abundant viruses largely infect important prokaryotic taxa that drive key metabolic processes in the sinkhole. Further, the abundance of viral auxiliary metabolic genes (AMGs) involved in nucleotide and protein synthesis was strongly correlated with declines in environmental phosphate and sulphate concentrations. These AMGs encoded key enzymes needed to produce sulphur-containing amino acids, and phosphorus metabolic enzymes involved in purine and pyrimidine nucleotide synthesis. We hypothesise that this correlation is either due to selection of these AMGs under low phosphate and sulphate concentrations, highlighting the dynamic interactions between viruses, their hosts, and the environment; or, that these AMGs are driving increased viral nucleotide and protein synthesis via manipulation of host phosphorus and sulphur metabolism, consequently driving nutrient depletion in the surrounding water. CONCLUSION This study represents the first metagenomic investigation of viruses in anchialine ecosystems, and provides new hypotheses and insights into virus-host-environment interactions in such 'dark', low-energy environments. This is particularly important since anchialine ecosystems are characterised by diverse endemic species, both in their microbial and faunal assemblages, which are primarily supported by microbial chemosynthesis. Thus, virus-host-environment interactions could have profound effects cascading through all trophic levels.
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Affiliation(s)
- Timothy M Ghaly
- School of Natural Sciences, Macquarie University, Sydney, Australia.
| | - Amaranta Focardi
- Climate Change Cluster (C3), University of Technology Sydney, Sydney, Australia
| | - Liam D H Elbourne
- School of Natural Sciences, Macquarie University, Sydney, Australia
- ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, Australia
| | | | - William F Humphreys
- School of Biological Sciences, University of Western Australia, Perth, Australia
| | - Paul R Jaschke
- School of Natural Sciences, Macquarie University, Sydney, Australia
- ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, Australia
| | - Sasha G Tetu
- School of Natural Sciences, Macquarie University, Sydney, Australia.
- ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, Australia.
| | - Ian T Paulsen
- School of Natural Sciences, Macquarie University, Sydney, Australia.
- ARC Centre of Excellence in Synthetic Biology, Macquarie University, Sydney, Australia.
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18
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Albarico FPJB, Lim YC, Chen CW, Chen CF, Wang MH, Dong CD. Linking seasonal plankton succession and cellular trace metal dynamics in marine assemblages. Sci Total Environ 2024; 907:167805. [PMID: 37858810 DOI: 10.1016/j.scitotenv.2023.167805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 04/04/2023] [Accepted: 10/11/2023] [Indexed: 10/21/2023]
Abstract
Factors affecting trace metal dynamics in marine plankton still need to be fully understood. Underlying mechanisms affecting cellular metal distribution, seasonal changes, and the influence of plankton community structure are poorly explored. This study comprehensively analyzed the seasonal changes in environmental factors, plankton community structure, and their impact on plankton cellular metal dynamics. Plankton samples were isolated, and trace metals (Cr, Mn, Fe, Co, Ni, Cu, As, Cd, Hg, and Pb) were analyzed with an inductively coupled plasma mass spectrometer (ICP-MS). Plankton community structure significantly changed with seasons (p < 0.05), which were mainly driven by temperature (seasonal change) and nutrients (eutrophication). Mean plankton cellular trace metals did not significantly change (p > 0.05) in the study area but were higher along estuaries likely due to differences in metal influx from rivers. However, their distribution patterns significantly differ between the wet and dry seasons, likely influenced by the changes in community structure and anthropogenic influx. Cellular trace metals, particularly in phytoplankton, strongly correlated with selected species suggesting the impacts of community structure in trace metal distribution. Hence, the influence of environmental factors in driving plankton succession may have caused a ripple effect on cellular trace metal distribution, especially in phytoplankton. However, both blooming species Skeletonema and Chaetoceros (diatoms) showed a contrasting relationship with cellular metals, suggesting the cooccurrence of bioaccumulation or biodilution mechanisms. This study shows the potential influence of community structure in cellular trace metal dynamics for marine plankton assemblages. However, more than plankton abundance and functional diversity, i.e., species diversity, might be needed to assess the community-level impacts on cellular metals.
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Affiliation(s)
- Frank Paolo Jay B Albarico
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; College of Fisheries and Allied Sciences, Northern Negros State College of Science and Technology, Sagay City 6122, Philippines
| | - Yee Cheng Lim
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Chih-Feng Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Ming-Huang Wang
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan
| | - Cheng-Di Dong
- Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan; Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City 81157, Taiwan.
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19
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Chen M, Jiang S, Han A, Yang M, Tkalich P, Liu M. Bunkering for change: Knowledge preparedness on the environmental aspect of ammonia as a marine fuel. Sci Total Environ 2024; 907:167677. [PMID: 37832674 DOI: 10.1016/j.scitotenv.2023.167677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/05/2023] [Accepted: 10/06/2023] [Indexed: 10/15/2023]
Abstract
Nitrogen cycling is essential to ecosystem functioning and the overall health of our planet. Ammonia, a nitrogen-containing product, as well as a nutrient, is promoted as a low-carbon fuel for the maritime sector, with spectacular production increase in plan. Similar to any other widespread fuels in the past, it is paramount to be prepared for the potential environmental impact of ammonia fuel. Here, through our preliminary calculations using literature data, we suggest that the amount of ammonia to be produced to fulfil the maritime energy need by 2050 may entail large alterations in global nitrogen cycling. Currently, the literature based on limited known cases of ammonia excess is insufficient to quantify the environmental impacts caused by the probable increase in bunkering ammonia release at global scale. With a few knowledge gaps identified, we call on the marine science community to investigate the potential environmental impact related to substantial ammonia excess, contributing new knowledge to a more environmentally sustainable future.
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Affiliation(s)
- Mengli Chen
- Tropical Marine Science Institute, National University of Singapore, Singapore 119227, Singapore.
| | - Shan Jiang
- State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200241, China
| | - Aiqin Han
- Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China
| | - Mengyao Yang
- Maritime Energy & Sustainable Development Centre of Excellence, Nanyang Technological University, Singapore 639798, Singapore
| | - Pavel Tkalich
- Tropical Marine Science Institute, National University of Singapore, Singapore 119227, Singapore
| | - Ming Liu
- Maritime Energy & Sustainable Development Centre of Excellence, Nanyang Technological University, Singapore 639798, Singapore
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20
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Monterroso H, Widdowson MA, Lotts WS, Strom KB, Hester ET. Effects of boundary hydraulics, dissolved oxygen, and dissolved organic carbon on growth and death dynamics of aerobic microbes in riverbed dune-induced hyporheic zones. Sci Total Environ 2024; 906:167401. [PMID: 37769729 DOI: 10.1016/j.scitotenv.2023.167401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 09/16/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Abstract
Surface and groundwater interact in the hyporheic zone beneath and adjacent to rivers in the presence of a diverse microbial community. Heterotrophic bacteria mediate a range of environmentally important reactions, yet few studies have quantified bacterial growth and death dynamics in the hyporheic zone, and none have systematically analyzed their response to variations in hydraulic or chemical conditions. We used MODFLOW and SEAM3D to simulate hydraulics; dissolved oxygen (DO) and dissolved organic carbon (DOC) transport; and aerobic microbial metabolism, growth, and death in hyporheic zones induced by riverbed dunes. We ran simulations both with and without growth/death processes, and varied hydraulic parameters and DO/DOC boundary concentrations. Microbial biomass reached steady state (t = 3 days) in every simulation, at which time there was greater biomass and DOC biodegradation rates in the hyporheic flowcell (300 % and 85 % higher for the base case, respectively) when accounting for microbial growth dynamics. This occurred as microbial biomass tailored its spatial distribution to the availability of DO and DOC, demonstrating the importance of simulating growth/death processes. Biomass generally increased with hyporheic flow cell area as upwelling groundwater decreased. When varying surface water DO and DOC source concentrations relative to the base case, the greatest effect on biomass occurred when increasing DOC and decreasing DO. We determined minimum DO and DOC steady-state concentrations required for microbial growth, but the minimums were not absolute or related by stoichiometry. Increasing DOC created a smaller area of microbes with higher concentrations relative to the base case. Increasing DO slightly increased the area occupied by microbes while keeping the total biomass nearly constant. Overall, microbial growth and death dynamics depend on DO and DOC availability in the hyporheic zone, which is dependent on DOC/DO boundary concentrations and hyporheic flow paths, and in turn the hydraulic interaction between surface water and groundwater.
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Affiliation(s)
- Hector Monterroso
- Department of Civil and Environmental Engineering, Virginia Tech, 200 Patton Hall, 750 Drillfield Drive, Blacksburg, VA 24061, USA
| | - Mark A Widdowson
- Department of Civil and Environmental Engineering, Virginia Tech, 200 Patton Hall, 750 Drillfield Drive, Blacksburg, VA 24061, USA
| | - W Seth Lotts
- Department of Civil and Environmental Engineering, Virginia Tech, 200 Patton Hall, 750 Drillfield Drive, Blacksburg, VA 24061, USA
| | - Kyle B Strom
- Department of Civil and Environmental Engineering, Virginia Tech, 200 Patton Hall, 750 Drillfield Drive, Blacksburg, VA 24061, USA
| | - Erich T Hester
- Department of Civil and Environmental Engineering, Virginia Tech, 200 Patton Hall, 750 Drillfield Drive, Blacksburg, VA 24061, USA.
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Rooze J, Zeller MA, Gogina M, Roeser P, Kallmeyer J, Schönke M, Radtke H, Böttcher ME. Bottom-trawling signals lost in sediment: A combined biogeochemical and modeling approach to early diagenesis in a perturbed coastal area of the southern Baltic Sea. Sci Total Environ 2024; 906:167551. [PMID: 37802344 DOI: 10.1016/j.scitotenv.2023.167551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/29/2023] [Accepted: 09/30/2023] [Indexed: 10/08/2023]
Abstract
Trawl-fishing is broadly considered to be one of the most destructive anthropogenic activities toward benthic ecosystems. In this study, we examine the effects of bottom-contact fishing by otter trawls on the geochemistry and macrofauna in sandy silt sediment in an area of the Baltic Sea where clear spatial patterns in trawling activity were previously identified by acoustic mapping. We calibrated an early diagenetic model to biogeochemical data from various coring locations. Fitting measured mercury profiles allowed for the determination of the sediment mixing and burial velocity. For all sites, independent of the trawl mark density, good fits were obtained by applying the model with the same organic matter loading and parameter values, while iron fluxes scaled linearly with the burial velocity. A sensitivity analysis revealed that the fitted sulfate reduction rate, solid sulfur contents, ammonium concentration, and both the isotopic composition and concentration of dissolved inorganic carbon provided reliable constraints for the total mineralization rate, which exhibited a narrow range of variability (around ±20 % from the mean) across the sites. Also, the trawling intensity did not significantly correlate with total organic carbon contents in surficial sediment, indicating limited loss of organic matter due to trawling. The fits to the reactive iron, acid volatile sulfur, chromium(II) reducible sulfur contents, and porewater composition demonstrate that sediment burial and mixing primarily determine the redox stratification. The mixing depth did not correlate with trawling intensity and is more likely the result of bioturbation, as the analyzed macrofaunal taxonomy and density showed a high potential for sediment reworking. The extraordinarily long-lived Arctica islandica bivalve dominated the infaunal biomass, despite the expectation that trawling leads to the succession from longer-lived to shorter-lived and bigger to smaller macrofauna. Our results further suggest that a clear geochemical footprint of bottom-trawling may not develop in sediments actively reworked by tenacious macrofauna.
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Affiliation(s)
- Jurjen Rooze
- Department of Physical Oceanography and Instrumentation, Leibniz Institute for Baltic Sea Research Warnemünde (IOW), 18119 Rostock, Germany; Department of Marine Geology, Leibniz Institute for Baltic Sea Research Warnemünde (IOW), 18119 Rostock, Germany.
| | - Mary A Zeller
- Department of Marine Geology, Leibniz Institute for Baltic Sea Research Warnemünde (IOW), 18119 Rostock, Germany
| | - Mayya Gogina
- Biological Oceanography, Leibniz Institute for Baltic Sea Research Warnemünde (IOW), 18119 Rostock, Germany
| | - Patricia Roeser
- Department of Marine Geology, Leibniz Institute for Baltic Sea Research Warnemünde (IOW), 18119 Rostock, Germany
| | - Jens Kallmeyer
- Geomicrobiology, GFZ German Research Center for Geosciences, 14473 Potsdam, Germany
| | - Mischa Schönke
- Marine Geochemistry, University of Greifswald, 17489 Greifswald, Germany
| | - Hagen Radtke
- Department of Physical Oceanography and Instrumentation, Leibniz Institute for Baltic Sea Research Warnemünde (IOW), 18119 Rostock, Germany
| | - Michael Ernst Böttcher
- Department of Marine Geology, Leibniz Institute for Baltic Sea Research Warnemünde (IOW), 18119 Rostock, Germany; Marine Geochemistry, University of Greifswald, 17489 Greifswald, Germany; Maritime Systems, Interdisciplinary Faculty, University of Rostock, 18059 Rostock, Germany
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22
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Bo G, Fang T, Chen L, Gong Z, Ma J. Shipboard determination of arsenite and total dissolved inorganic arsenic in estuarine and coastal waters with an automated on-site-applicable atomic fluorescence spectrometer. Talanta 2024; 266:125082. [PMID: 37595527 DOI: 10.1016/j.talanta.2023.125082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/07/2023] [Accepted: 08/14/2023] [Indexed: 08/20/2023]
Abstract
The speciation of trace level arsenic (As) in estuarine and coastal waters is crucial for both biogeochemical and toxicological studies of this toxic metalloid. However, the accurate and on-site determination of As in complex seawater matrices is challenging because of the low concentration of As, the easy conversion of arsenite (As(III)) to arsenate (As(V)), and the considerable effect of salinity on the determination of As via conventional methods. In this study, a custom-made shipboard atomic fluorescence spectrometer (AFS) is reported for the on-site speciation of inorganic As in estuarine and coastal waters. After comprehensive optimization of the instrumental and chemical parameters, the method demonstrated high sensitivity (limits of detection: 0.02 μg L-1), good linearity (R2 > 0.999 for all calibration curves up to 8 μg L-1), high precision (relative standard deviations (RSDs) of less than 2% at 1 μg L-1 over a year-long evaluation), and excellent performance for sample analysis for different matrices with varying salinities (recoveries: 96.3%-105.3%). The portable and field-applicable AFS was successfully applied to the on-site and shipboard simultaneous determination of As(III) and total dissolved inorganic arsenic (TDIAs) in the coastal waters of Shandong, Jiangsu, Zhejiang, Fujian, and Guangdong province of China, demonstrating its robustness and applicability in harsh conditions.
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Affiliation(s)
- Guangyong Bo
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, People's Republic of China; National Observation and Research Station for the Taiwan Strait Marine Ecosystem, Xiamen University, Zhangzhou, 363000, People's Republic of China
| | - Tengyue Fang
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, People's Republic of China; National Observation and Research Station for the Taiwan Strait Marine Ecosystem, Xiamen University, Zhangzhou, 363000, People's Republic of China
| | - Luodan Chen
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Zhenbin Gong
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, People's Republic of China
| | - Jian Ma
- State Key Laboratory of Marine Environmental Science, College of the Environment and Ecology, Xiamen University, Xiamen, 361102, People's Republic of China; National Observation and Research Station for the Taiwan Strait Marine Ecosystem, Xiamen University, Zhangzhou, 363000, People's Republic of China.
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23
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Oceans can capture more carbon dioxide than previously thought. Nature 2023. [PMID: 38110633 DOI: 10.1038/d41586-023-03662-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
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24
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Barbero-Palacios L, Ferraro KM, Barrio IC, Krumins JA, Bartolomé J, Albanell E, Jarque-Bascuñana L, Lavín S, Calleja JA, Carreira JA, Serrano E. Faecal nutrient deposition of domestic and wild herbivores in an alpine grassland. Sci Total Environ 2023; 903:166616. [PMID: 37647958 DOI: 10.1016/j.scitotenv.2023.166616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/24/2023] [Accepted: 08/25/2023] [Indexed: 09/01/2023]
Abstract
The contribution of herbivores to ecosystem nutrient fluxes through dung deposition has the potential to, directly and indirectly, influence ecosystem functioning. This process can be particularly important in nutrient-limited ecosystems such as alpine systems. However, herbivore dung content (carbon, C; nitrogen, N; phosphorus, P; potassium, K) and stoichiometry (C/N) may differ among species due to differences in diet, seasonality, body type, feeding strategy, and/or digestive system with consequences for soil biogeochemistry. Here we explore how species, body size, and seasonality may result in differences in dung stoichiometry for four alpine herbivores (chamois, sheep, horse, and cattle). We found that herbivore dung nutrient content often varies among species as well as with body size, with the dung of small herbivores having larger C, N, and P faecal content. Seasonality also showed marked effects on faecal nutrient content, with a general pattern of decreasing levels of faecal P, N and an increase of C/N as the summer progresses following the loss of nutrient value of the vegetation. Moreover, we showed how herbivores play an important role as natural fertilizers of C, N, and P in our study area, especially cattle. Our study highlights the importance of considering the relative contribution of different herbivores to ecosystem nutrient fluxes in management practices, especially with ongoing changes in wild and domestic herbivore populations in alpine ecosystems.
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Affiliation(s)
- Laura Barbero-Palacios
- Faculty of Environmental and Forest Sciences, Agricultural University of Iceland, Árleyni 22, Keldnaholt, IS-112 Reykjavík, Iceland.
| | - Kristy M Ferraro
- Yale University School of the Environment, 370 Prospect Street, New Haven, CT 06511, USA
| | - Isabel C Barrio
- Faculty of Environmental and Forest Sciences, Agricultural University of Iceland, Árleyni 22, Keldnaholt, IS-112 Reykjavík, Iceland.
| | | | - Jordi Bartolomé
- Grup de Recerca en Remugants, Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona (UAB), Bellaterra, Spain.
| | - Elena Albanell
- Grup de Recerca en Remugants, Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona (UAB), Bellaterra, Spain.
| | - Laia Jarque-Bascuñana
- Wildlife Ecology & Health Group (WE&H) and Servei d'Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Facultat de Veterinària, Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Spain
| | - Santiago Lavín
- Wildlife Ecology & Health Group (WE&H) and Servei d'Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Facultat de Veterinària, Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Spain.
| | - Juan A Calleja
- Departamento de Biología (Botánica), Centro de Investigación en Biodiversidad y Cambio Global (CIBC-UAM), Universidad Autónoma de Madrid, Spain; CREAF, Cerdanyola del Vallès, Spain.
| | - José A Carreira
- Departamento de Biología Animal, Vegetal y Ecología, Universidad de Jaén, 23071 Jaén, Spain
| | - Emmanuel Serrano
- Wildlife Ecology & Health Group (WE&H) and Servei d'Ecopatologia de Fauna Salvatge (SEFaS), Departament de Medicina i Cirurgia Animals, Facultat de Veterinària, Universitat Autònoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Spain
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25
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Hernández-León S. The biological carbon pump, diel vertical migration, and carbon dioxide removal. iScience 2023; 26:107835. [PMID: 38026165 PMCID: PMC10651677 DOI: 10.1016/j.isci.2023.107835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023] Open
Abstract
Carbon dioxide is increasing in the atmosphere promoting the faster environmental change of the Earth's recent history. Several marine carbon dioxide removal (mCDR) technologies were proposed to slow down CO2 in the atmosphere. Technologies now under experimentation are related to the increase in gravitational flux. Other mechanisms such as active flux, the transport performed by diel vertical migrants (DVMs) were not considered. We review the effect of DVMs in the epipelagic realm and the top-down promoted by these organisms upon zooplankton and microzooplankton, and their variability due to lunar cycles. A night source of weak light will increase epipelagic zooplankton biomass due to DVMs avoidance from the upper layers to escape predation, promoting DVMs to export this biomass by active flux once the illumination ceases. This mCDR method should be tested in the field as it will increase the efficiency of the biological carbon pump in the ocean.
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Affiliation(s)
- Santiago Hernández-León
- Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, Unidad Asociada ULPGC-CSIC, Campus de Taliarte, Telde, 35214 Gran Canaria, Canary Islands, Spain
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26
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27
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Li Y, Xiong L, Yu H, Zeng K, Wei Y, Li H, Zeng W, Ji X. Function and distribution of nitrogen-cycling microbial communities in the Napahai plateau wetland. Arch Microbiol 2023; 205:357. [PMID: 37872393 DOI: 10.1007/s00203-023-03695-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 10/25/2023]
Abstract
Nitrogen is an essential component of living organisms and a major nutrient that limits life on Earth. Until now, freely available nitrogen mainly comes from atmospheric nitrogen, but most organisms rely on bioavailable forms of nitrogen, which depends on the complex network of microorganisms with a wide variety of metabolic functions. Microbial-mediated nitrogen cycling contributes to the biogeochemical cycling of wetlands, but its specific microbial abundance, composition, and distribution need to be studied. Based on the metagenomic data, we described the composition and functional characteristics of microbial nitrogen cycle-related genes in the Napahai plateau wetland. Six nitrogen cycling pathways existed, such as dissimilatory nitrate reduction, denitrification, nitrogen fixation, nitrification, anammox, and nitrate assimilation. Most genes related to the nitrogen cycling in this region come from bacteria, mainly from Proteobacteria and Acidobacteria. Habitat types and nitrogen cycle-related genes largely explained the relative abundance of total nitrogen pathways. Phylogenetic trees were constructed based on nitrogen cycle-related genes from different habitats and sources, combined with PCoA analysis, most of them clustered separately, indicating richness and uniqueness. Some microbial groups seemed to be special or general in the nitrogen cycling. In conclusion, it suggested that microorganisms regulated the N cycling process, and may lead to N loss throughout the wetland, thus providing a basis for further elucidation of the microbial regulation of N cycling processes and the Earth's elemental cycles.
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Affiliation(s)
- Yanmei Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Lingling Xiong
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Hang Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Kun Zeng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Yunlin Wei
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, China
| | - Haiyan Li
- Medical School, Kunming University of Science and Technology, Kunming, 650500, China
| | - Weikun Zeng
- School of Medicine, Kunming University, Kunming, 650214, China
| | - Xiuling Ji
- Medical School, Kunming University of Science and Technology, Kunming, 650500, China.
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28
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Monosson E. The plant poisons that shape our daily lives. Nature 2023; 622:689-690. [PMID: 37872288 DOI: 10.1038/d41586-023-03303-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
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29
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Tino CJ, Stüeken EE, Arp G, Böttcher ME, Bates SM, Lyons TW. Are Large Sulfur Isotope Variations Biosignatures in an Ancient, Impact-Induced Hydrothermal Mars Analog? Astrobiology 2023; 23:1027-1044. [PMID: 37498995 DOI: 10.1089/ast.2022.0114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Discrepancies have emerged concerning the application of sulfur stable isotope ratios as a biosignature in impact crater paleolakes. The first in situ δ34S data from Mars at Gale crater display a ∼75‰ range that has been attributed to an abiotic mechanism. Yet biogeochemical studies of ancient environments on Earth generally interpret δ34S fractionations >21‰ as indicative of a biological origin, and studies of δ34S at analog impact crater lakes on Earth have followed the same approach. We performed analyses (including δ34S, total organic carbon wt%, and scanning electron microscope imaging) on multiple lithologies from the Nördlinger Ries impact crater, focusing on hydrothermally altered impact breccias and associated sedimentary lake-fill sequences to determine whether the δ34S properties define a biosignature. The differences in δ34S between the host lithologies may have resulted from thermochemical sulfate reduction, microbial sulfate reduction, hydrothermal equilibrium fractionation, or any combination thereof. Despite abundant samples and instrumental precision currently exclusive to Earth-bound analyses, assertions of biogenicity from δ34S variations >21‰ at the Miocene Ries impact crater are tenuous. This discourages the use of δ34S as a biosignature in similar environments without independent checks that include the full geologic, biogeochemical, and textural context, as well as a comprehensive acknowledgment of alternative hypotheses.
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Affiliation(s)
- Christopher J Tino
- Department of Earth and Planetary Sciences, University of California, Riverside, California, USA
| | - Eva E Stüeken
- School of Earth and Environmental Sciences, University of St. Andrews, St. Andrews, Scotland, United Kingdom
- Virtual Planetary Laboratory, University of Washington, Seattle, Washington, USA
| | - Gernot Arp
- Geowissenschaftliches Zentrum, Georg-August-Universität Göttingen, Göttingen, Germany
| | - Michael Ernst Böttcher
- Geochemistry & Isotope Biogeochemistry, Leibniz Institute for Baltic Sea Research (IOW), Warnemünde, Germany
- Marine Geochemistry, University of Greifswald, Greifswald, Germany
- Department of Maritime Systems, Interdisciplinary Faculty (INF), University of Rostock, Rostock, Germany
| | - Steven M Bates
- Department of Earth and Planetary Sciences, University of California, Riverside, California, USA
| | - Timothy W Lyons
- Department of Earth and Planetary Sciences, University of California, Riverside, California, USA
- Virtual Planetary Laboratory, University of Washington, Seattle, Washington, USA
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30
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Sanyal SK, Pukala T, Mittal P, Reith F, Brugger J, Etschmann B, Shuster J. From biomolecules to biogeochemistry: Exploring the interaction of an indigenous bacterium with gold. Chemosphere 2023; 339:139657. [PMID: 37543229 DOI: 10.1016/j.chemosphere.2023.139657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/23/2023] [Accepted: 07/24/2023] [Indexed: 08/07/2023]
Abstract
Specialised microbial communities colonise the surface of gold particles in soils/sediments, and catalyse gold dissolution and re-precipitation, thereby contributing to the environmental mobility and toxicity of this 'inert' precious metal. We assessed the proteomic and physiological response of Serratia proteamaculans, the first metabolically active bacterium enriched and isolated directly from natural gold particles, when exposed to toxic levels of soluble Au3+ (10 μM). The results were compared to a metal-free blank, and to cultures exposed to similarly toxic levels of soluble Cu2+ (0.1 mM); Cu was chosen for comparison because it is closely associated with Au in nature due to similar geochemical properties. A total of 273 proteins were detected from the cells that experienced the oxidative effects of soluble Au, of which 139 (51%) were upregulated with either sole expression (31%) or had synthesis levels greater than the Au-free control (20%). The majority (54%) of upregulated proteins were functionally different from up-regulated proteins in the bacteria-copper treatment. These proteins were related to broad functions involving metabolism and biogenesis, followed by cellular process and signalling, indicating significant specificity for Au. This proteomic study revealed that the bacterium upregulates the synthesis of various proteins related to oxidative stress response (e.g., Monothiol-Glutaredoxin, Thiol Peroxidase, etc.) and cellular damage repair, which leads to the formation of metallic gold nanoparticles less toxic than ionic gold. Therefore, indigenous bacteria may mediate the toxicity of Au through two different yet simultaneous processes: i) repairing cellular components by replenishing damaged proteins and ii) neutralising reactive oxygen species (ROS) by up-regulating the synthesis of antioxidants. By connecting the fields of molecular bacteriology and environmental biogeochemistry, this study is the first step towards the development of biotechnologies based on indigenous bacteria applied to gold bio-recovery and bioremediation of contaminated environments.
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Affiliation(s)
- Santonu K Sanyal
- School of Earth, Atmosphere and Environment, Monash University, Clayton, Victoria, 3800, Australia.
| | - Tara Pukala
- Adelaide Proteomics Centre, The University of Adelaide, Adelaide, South Australia, 5001, Australia; School of Physics, Chemistry and Earth Sciences, The University of Adelaide, Adelaide, South Australia, 5001, Australia
| | - Parul Mittal
- Adelaide Proteomics Centre, The University of Adelaide, Adelaide, South Australia, 5001, Australia
| | | | - Joël Brugger
- School of Earth, Atmosphere and Environment, Monash University, Clayton, Victoria, 3800, Australia
| | - Barbara Etschmann
- School of Earth, Atmosphere and Environment, Monash University, Clayton, Victoria, 3800, Australia
| | - Jeremiah Shuster
- Department of Earth Sciences, Western University, London, Ontario, N6A 3K7, Canada
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31
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Miner KR, Hollis JR, Miller CE, Uckert K, Douglas TA, Cardarelli E, Mackelprang R. Earth to Mars: A Protocol for Characterizing Permafrost in the Context of Climate Change as an Analog for Extraplanetary Exploration. Astrobiology 2023; 23:1006-1018. [PMID: 37566539 PMCID: PMC10510695 DOI: 10.1089/ast.2022.0155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 07/02/2023] [Indexed: 08/13/2023]
Abstract
Abstract Permafrost is important from an exobiology and climate change perspective. It serves as an analog for extraplanetary exploration, and it threatens to emit globally significant amounts of greenhouse gases as it thaws due to climate change. Viable microbes survive in Earth's permafrost, slowly metabolizing and transforming organic matter through geologic time. Ancient permafrost microbial communities represent a crucial resource for gaining novel insights into survival strategies adopted by extremotolerant organisms in extraplanetary analogs. We present a proof-of-concept study on ∼22 Kya permafrost to determine the potential for coupling Raman and fluorescence biosignature detection technology from the NASA Mars Perseverance rover with microbial community characterization in frozen soils, which could be expanded to other Earth and off-Earth locations. Besides the well-known utility for biosignature detection and identification, our results indicate that spectral mapping of permafrost could be used to rapidly characterize organic carbon characteristics. Coupled with microbial community analyses, this method has the potential to enhance our understanding of carbon degradation and emissions in thawing permafrost. Further, spectroscopy can be accomplished in situ to mitigate sample transport challenges and in assessing and prioritizing frozen soils for further investigation. This method has broad-range applicability to understanding microbial communities and their associations with biosignatures and soil carbon and mineralogic characteristics relevant to climate science and astrobiology.
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Affiliation(s)
- Kimberley R. Miner
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | | | - Charles E. Miller
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | - Kyle Uckert
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
| | | | - Emily Cardarelli
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA
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32
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Voigt C, Virkkala AM, Hould Gosselin G, Bennett KA, Black TA, Detto M, Chevrier-Dion C, Guggenberger G, Hashmi W, Kohl L, Kou D, Marquis C, Marsh P, Marushchak ME, Nesic Z, Nykänen H, Saarela T, Sauheitl L, Walker B, Weiss N, Wilcox EJ, Sonnentag O. Arctic soil methane sink increases with drier conditions and higher ecosystem respiration. Nat Clim Chang 2023; 13:1095-1104. [PMID: 37810622 PMCID: PMC10550823 DOI: 10.1038/s41558-023-01785-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 07/31/2023] [Indexed: 10/10/2023]
Abstract
Arctic wetlands are known methane (CH4) emitters but recent studies suggest that the Arctic CH4 sink strength may be underestimated. Here we explore the capacity of well-drained Arctic soils to consume atmospheric CH4 using >40,000 hourly flux observations and spatially distributed flux measurements from 4 sites and 14 surface types. While consumption of atmospheric CH4 occurred at all sites at rates of 0.092 ± 0.011 mgCH4 m-2 h-1 (mean ± s.e.), CH4 uptake displayed distinct diel and seasonal patterns reflecting ecosystem respiration. Combining in situ flux data with laboratory investigations and a machine learning approach, we find biotic drivers to be highly important. Soil moisture outweighed temperature as an abiotic control and higher CH4 uptake was linked to increased availability of labile carbon. Our findings imply that soil drying and enhanced nutrient supply will promote CH4 uptake by Arctic soils, providing a negative feedback to global climate change.
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Affiliation(s)
- Carolina Voigt
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
- Département de géographie & Centre d’études nordiques, Université de Montréal, Montréal, Quebec Canada
- Institute of Soil Science, Universität Hamburg, Hamburg, Germany
| | | | - Gabriel Hould Gosselin
- Département de géographie & Centre d’études nordiques, Université de Montréal, Montréal, Quebec Canada
- Department of Geography and Environmental Studies & Cold Regions Research Centre, Wilfrid Laurier University, Waterloo, Ontario Canada
| | - Kathryn A. Bennett
- Département de géographie & Centre d’études nordiques, Université de Montréal, Montréal, Quebec Canada
| | - T. Andrew Black
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, British Columbia Canada
| | - Matteo Detto
- Department of Ecology and Evolutionary Biology, Princeton University, Princeton, NJ USA
| | - Charles Chevrier-Dion
- Département de géographie & Centre d’études nordiques, Université de Montréal, Montréal, Quebec Canada
| | - Georg Guggenberger
- Institute of Soil Science, Leibniz Universität Hannover, Hannover, Germany
| | - Wasi Hashmi
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - Lukas Kohl
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - Dan Kou
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - Charlotte Marquis
- Département de géographie & Centre d’études nordiques, Université de Montréal, Montréal, Quebec Canada
| | - Philip Marsh
- Department of Geography and Environmental Studies & Cold Regions Research Centre, Wilfrid Laurier University, Waterloo, Ontario Canada
| | - Maija E. Marushchak
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
- Department of Biological and Environmental Science, University of Jyväskylä, Jyväskylä, Finland
| | - Zoran Nesic
- Faculty of Land and Food Systems, University of British Columbia, Vancouver, British Columbia Canada
| | - Hannu Nykänen
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - Taija Saarela
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - Leopold Sauheitl
- Institute of Soil Science, Leibniz Universität Hannover, Hannover, Germany
| | - Branden Walker
- Department of Geography and Environmental Studies & Cold Regions Research Centre, Wilfrid Laurier University, Waterloo, Ontario Canada
| | - Niels Weiss
- Department of Geography and Environmental Studies & Cold Regions Research Centre, Wilfrid Laurier University, Waterloo, Ontario Canada
- Northwest Territories Geological Survey, Yellowknife, Northwest Territories Canada
| | - Evan J. Wilcox
- Department of Geography and Environmental Studies & Cold Regions Research Centre, Wilfrid Laurier University, Waterloo, Ontario Canada
| | - Oliver Sonnentag
- Département de géographie & Centre d’études nordiques, Université de Montréal, Montréal, Quebec Canada
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Pireddu PL. The Relationship Between George Evelyn Hutchinson and Vladimir Ivanovic Vernadsky: Roots and Consequences of a Biogeochemical Approach. J Hist Biol 2023; 56:339-363. [PMID: 37219802 PMCID: PMC10533581 DOI: 10.1007/s10739-023-09717-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/20/2023] [Indexed: 05/24/2023]
Abstract
Focusing on the relationship between two important scientists in the development of ecological thought during the first half of the twentieth century, this paper argues that Yale limnologist G. E. Hutchinson's adoption of the biogeochemical approach in the late 1930s builds on the 1920s work of the Russian scientist V. I. Vernadsky. An analysis of Hutchinson's scientific publications shows that he first referred to Vernadsky in 1940, on two different occasions. This article analyzes the dynamics of Hutchinson's formulation of the biogeochemical approach, providing historical context and linking its early application to the existing limnological tradition.
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Affiliation(s)
- Pier Luigi Pireddu
- Departamento de História e Filosofia das Ciências, Universidade de Lisboa - Faculdade de Ciências (FCUL) / Centro Interuniversitário de História das Ciências e da Tecnologia (CIUHCT), Campo Grande C4, Lisbon, Portugal.
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34
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Toner BM. Improved theory of ocean iron cycle resolves modelling issues. Nature 2023; 620:41-42. [PMID: 37532810 DOI: 10.1038/d41586-023-02406-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023]
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35
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Tie L, Wei S, Peñuelas J, Sardans J, Liu X, Zhou S, Liu X, Bose AK, Huang C. N and P combined addition accelerates the release of litter C, N, and most metal nutrients in a N-rich subtropical forest. Sci Total Environ 2023; 881:163491. [PMID: 37068669 DOI: 10.1016/j.scitotenv.2023.163491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/26/2023] [Accepted: 04/09/2023] [Indexed: 06/01/2023]
Abstract
Imbalanced nitrogen (N) and phosphorus (P) depositions are profoundly shifting terrestrial ecosystem biogeochemical processes. However, how P addition and its interaction with N addition influence the release of litter carbon (C), N, P, and especially metal nutrients in subtropical forests remains unclear. Herein, a two-year field litterbag experiment was conducted in a natural subtropical evergreen broadleaved forest of southwestern China using a factorial design with three levels of N addition (0, 10, and 20 g N m-2 y-1) and P addition (0, 5, 15 g P m-2 y-1). During two years of decomposition, N- and P-only addition treatments decreased the accumulated mass loss and release rates of litter C, N, P, K, Na, and Mn (p < 0.05); N and P coaddition treatments increased the accumulated mass loss and release rates of litter C, N, K, Na, Mn, and Cu (p < 0.05) and decreased the accumulated release rates of litter P and Mg (p < 0.05); the C/P and N/P ratios of the residual litter increased under the N-only addition treatments (p < 0.05) and decreased under the P-only addition and N and P coaddition treatments (p < 0.05). Overall, the results suggest that combined N and P supply can increase biological activities and thus accelerate the release of litter C, N, and most metal nutrients, as expected within the framework of ecological stoichiometry and growth rate hypothesis. Our study also highlights that the effect of N addition on litter C and nutrients release depends on P availability.
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Affiliation(s)
- Liehua Tie
- Institute for Forest Resources and Environment of Guizhou, Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, College of Forestry, Guizhou University, 550025 Guiyang, China; National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, College of Forestry, Sichuan Agricultural University, 611130 Chengdu, China; CSIC, Unitat d'Ecologia Global CREAF-CSIC-UAB, Edifici C, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Catalonia, Spain; CREAF, Cerdanyola del Vallès, 08193 Barcelona, Catalonia, Spain.
| | - Shengzhao Wei
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, College of Forestry, Sichuan Agricultural University, 611130 Chengdu, China
| | - Josep Peñuelas
- CSIC, Unitat d'Ecologia Global CREAF-CSIC-UAB, Edifici C, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Catalonia, Spain; CREAF, Cerdanyola del Vallès, 08193 Barcelona, Catalonia, Spain.
| | - Jordi Sardans
- CSIC, Unitat d'Ecologia Global CREAF-CSIC-UAB, Edifici C, Universitat Autònoma de Barcelona, Bellaterra, 08193 Barcelona, Catalonia, Spain; CREAF, Cerdanyola del Vallès, 08193 Barcelona, Catalonia, Spain; Nonlinear Analysis and Applied Mathematics (NAAM)-Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, P.O. Box 80257, Jeddah 21589. Saudi Arabia.
| | - Xing Liu
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, College of Forestry, Sichuan Agricultural University, 611130 Chengdu, China
| | - Shixing Zhou
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, College of Forestry, Sichuan Agricultural University, 611130 Chengdu, China.
| | - Xiong Liu
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, College of Forestry, Sichuan Agricultural University, 611130 Chengdu, China.
| | - Arun K Bose
- Swiss Federal Institute for Forest, Snow and Landscape Research WSL, 8903 Birmensdorf, Switzerland; Forestry and Wood Technology Discipline, Khulna University, 9208 Khulna, Bangladesh.
| | - Congde Huang
- National Forestry and Grassland Administration Key Laboratory of Forest Resources Conservation and Ecological Safety on the Upper Reaches of the Yangtze River, Sichuan Province Key Laboratory of Ecological Forestry Engineering on the Upper Reaches of the Yangtze River, College of Forestry, Sichuan Agricultural University, 611130 Chengdu, China.
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Liu W, Zhang Y, Yu M, Xu J, Du H, Zhang R, Wu D, Xie X. Role of phosphite in the environmental phosphorus cycle. Sci Total Environ 2023; 881:163463. [PMID: 37062315 DOI: 10.1016/j.scitotenv.2023.163463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/29/2023] [Accepted: 04/08/2023] [Indexed: 06/01/2023]
Abstract
In modern geochemistry, phosphorus (P) is considered synonymous with phosphate (Pi) because Pi controls the growth of organisms as a limiting nutrient in many ecosystems. The researchers therefore realised that a complete P cycle is essential. Limited by thermodynamic barriers, P was long believed to be incapable of redox reactions, and the role of the redox cycle of reduced P in the global P cycling system was thus not ascertained. Nevertheless, the phosphite (Phi) form of P is widely present in various environments and participates in the global P redox cycle. Herein, global quantitative evidences of Phi are enumerated and the early origin and modern biotic/abiotic sources of Phi are elaborated. Further, the Phi-based redox pathway for P reduction is analysed and global multienvironmental Phi redox cycle processes are proposed on the basis of this pathway. The possible role of Phi in controlling algae in eutrophic lakes and its ecological benefits to plants are proposed. In this manner, the important role of Phi in the P redox cycle and global P cycle is systematically and comprehensively identified and confirmed. This work will provide scientific guidance for the future production and use of Phi products and arouse attention and interest on clarifying the role of Phi in the environmental phosphorus cycle.
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Affiliation(s)
- Wei Liu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Yalan Zhang
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Mengqin Yu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Jinying Xu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Hu Du
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Ru Zhang
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Daishe Wu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China; School of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337000, China
| | - Xianchuan Xie
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China.
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Buivydaitė Ž, Aryal L, Corrêa FB, Chen T, Langlois V, Elberg CL, Netherway T, Wang R, Zhao T, Acharya B, Emerson JB, Hillary L, Khadka RB, Mason-Jones K, Sapkota R, Sutela S, Trubl G, White RA, Winding A, Carreira C. Meeting report: The first soil viral workshop 2022. Virus Res 2023; 331:199121. [PMID: 37086855 PMCID: PMC10457523 DOI: 10.1016/j.virusres.2023.199121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/20/2023] [Accepted: 04/20/2023] [Indexed: 04/24/2023]
Abstract
Soil viral ecology is a growing research field; however, the state of knowledge still lags behind that of aquatic systems. Therefore, to facilitate progress, the first Soil Viral Workshop was held to encourage international scientific discussion and collaboration, suggest guidelines for future research, and establish soil viral research as a concrete research area. The workshop took place at Søminestationen, Denmark, between 15 and 17th of June 2022. The meeting was primarily held in person, but the sessions were also streamed online. The workshop was attended by 23 researchers from ten different countries and from a wide range of subfields and career stages. Eleven talks were presented, followed by discussions revolving around three major topics: viral genomics, virus-host interactions, and viruses in the soil food web. The main take-home messages and suggestions from the discussions are summarized in this report.
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Affiliation(s)
- Živilė Buivydaitė
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark.
| | - Laxman Aryal
- Nepal National Plant Pathology Research Center, Nepal Agricultural Research Council, Khumaltar, Lalitpur, Nepal
| | - Felipe Borim Corrêa
- Department of Environmental Microbiology, Helmholtz-Centre for Environmental Research - UFZ, Leipzig, Germany
| | - Tingting Chen
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Valérie Langlois
- Département de Biochimie, de Microbiologie et de Bio-informatique, Université Laval, G1V 0A6 Québec, QC, Canada
| | - Christine Lorenzen Elberg
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Tarquin Netherway
- Department of Ecology, Swedish University of Agricultural Sciences, Ulls väg 16, 756 51 Uppsala, Sweden
| | - Ruiqi Wang
- Department of Environmental Biology, Institute of Environmental Sciences (CML), Leiden University, Einsteinweg 2, 2333 CC Leiden, the Netherlands
| | - Tianci Zhao
- Microbial Ecology Cluster, Genomics Research in Ecology and Evolution in Nature (Green), Groningen Institute for Evolutionary Life Sciences (GELIFES), University of Groningen, 9747AG Groningen, the Netherlands
| | - Basistha Acharya
- Nepal National Plant Pathology Research Center, Nepal Agricultural Research Council, Khumaltar, Lalitpur, Nepal
| | - Joanne B Emerson
- Department of Plant Pathology, University of California, 1 Shields Ave., Davis, CA, USA
| | - Luke Hillary
- Department of Plant Pathology, University of California, 1 Shields Ave., Davis, CA, USA
| | - Ram B Khadka
- Nepal National Plant Pathology Research Center, Nepal Agricultural Research Council, Khumaltar, Lalitpur, Nepal
| | - Kyle Mason-Jones
- Department of Terrestrial Ecology, Netherlands Institute of Ecology (NIOO-KNAW), Droevendaalsesteeg 10, 6708 PB Wageningen, the Netherlands
| | - Rumakanta Sapkota
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Suvi Sutela
- Forest Health and Biodiversity Group, Natural Resources Institute Finland, Helsinki, Finland
| | - Gareth Trubl
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, USA
| | - Richard Allen White
- Department of Bioinformatics and Genomics, The University of North Carolina at Charlotte, Kannapolis, NC, USA
| | - Anne Winding
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
| | - Cátia Carreira
- Department of Environmental Science, Aarhus University, Frederiksborgvej 399, 4000 Roskilde, Denmark
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Nriagu J. Sixty years since the report of global lead pollution. Nature 2023; 619:704-706. [PMID: 37491397 DOI: 10.1038/d41586-023-02196-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
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39
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World's largest ocean 'dead zone' was well oxygenated during past warm period. Nature 2023. [PMID: 37380839 DOI: 10.1038/d41586-023-02004-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/30/2023]
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Mondal T, Choudhury M, Kundu D, Dutta D, Samanta P. Landfill: An eclectic review on structure, reactions and remediation approach. Waste Manag 2023; 164:127-142. [PMID: 37054538 DOI: 10.1016/j.wasman.2023.03.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 02/14/2023] [Accepted: 03/24/2023] [Indexed: 06/19/2023]
Abstract
Since the enactment of the Clean Water Act (1972), which was supplemented by increased accountability under Resource Conservation and Recovery Act (RCRA) Subtitle D (1991) and the Clean Air Act Amendments (1996), landfills have indeed been widely used all around the world for treating various wastes. The landfill's biological and biogeochemical processes are believed to be originated about 2 to 4 decades ago. Scopus and web of Science based bibliometric study reveals that there are few papers available in scientific domain. Further, till today not a single paper demonstrated the detailed landfills heterogenicity, chemistry and microbiological processes and their associated dynamics in a combined approach. Accordingly, the paper addresses the recent applications of cutting-edge biogeochemical and biological methods adopted by different countries to sketch an emerging perspective of landfill biological and biogeochemical reactions and dynamics. Additionally, the significance of several regulatory factors controlling the landfill's biogeochemical and biological processes is highlighted. Finally, this article emphasizes the future opportunities for integrating advanced techniques to explain landfill chemistry explicitly. In conclusion, this paper will provide a comprehensive vision of the diverse dimensions of landfill biological and biogeochemical reactions and dynamics to the scientific world and policymakers.
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Affiliation(s)
- Tridib Mondal
- Department of Chemistry, Sukanta Mahavidyalaya, University of North Bengal, Dhupguri 735210, West Bengal, India
| | - Moharana Choudhury
- Environmental Research and Management Division, Voice of Environment (VoE), Guwahati - 781034, Assam, India.
| | - Debajyoti Kundu
- Waste Re-processing Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India
| | - Deblina Dutta
- Department of Environmental Science and Engineering, SRM University-AP, Amaravati, Andhra Pradesh 522 240, India
| | - Palas Samanta
- Department of Environmental Science, Sukanta Mahavidyalaya, University of North Bengal, Dhupguri 735210, West Bengal, India.
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Williamson AJ, Binet M, Sergeant C. Radionuclide biogeochemistry: from bioremediation toward the treatment of aqueous radioactive effluents. Crit Rev Biotechnol 2023:1-19. [PMID: 37258417 DOI: 10.1080/07388551.2023.2194505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 10/07/2022] [Accepted: 01/29/2023] [Indexed: 06/02/2023]
Abstract
Civilian and military nuclear programs of several nations over more than 70 years have led to significant quantities of heterogenous solid, organic, and aqueous radioactive wastes bearing actinides, fission products, and activation products. While many physicochemical treatments have been developed to remediate, decontaminate and reduce waste volumes, they can involve high costs (energy input, expensive sorbants, ion exchange resins, chemical reducing/precipitation agents) or can lead to further secondary waste forms. Microorganisms can directly influence radionuclide solubility, via sorption, accumulation, precipitation, redox, and volatilization pathways, thus offering a more sustainable approach to remediation or effluent treatments. Much work to date has focused on fundamentals or laboratory-scale remediation trials, but there is a paucity of information toward field-scale bioremediation and, to a lesser extent, toward biological liquid effluent treatments. From the few biostimulation studies that have been conducted at legacy weapon production/test sites and uranium mining and milling sites, some marked success via bioreduction and biomineralisation has been observed. However, rebounding of radionuclide mobility from (a)biotic scale-up factors are often encountered. Radionuclide, heavy metal, co-contaminant, and/or matrix effects provide more challenging conditions than traditional industrial wastewater systems, thus innovative solutions via indirect interactions with stable element biogeochemical cycles, natural or engineered cultures or communities of metal and irradiation tolerant strains and reactor design inspirations from existing metal wastewater technologies, are required. This review encompasses the current state of the art in radionuclide biogeochemistry fundamentals and bioremediation and establishes links toward transitioning these concepts toward future radioactive effluent treatments.
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Affiliation(s)
| | - Marie Binet
- EDF R&D, LNHE (Laboratoire National d'Hydraulique et Environnement), Chatou, France
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How to lock away more carbon: give mangroves a little love. Nature 2023. [PMID: 37264127 DOI: 10.1038/d41586-023-01765-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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Zhou Z, Wang H, Li Y. Mercury stable isotopes in the ocean: Analytical methods, cycling, and application as tracers. Sci Total Environ 2023; 874:162485. [PMID: 36858226 DOI: 10.1016/j.scitotenv.2023.162485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
Mercury (Hg) has seven stable isotopes that can be utilized to trace the sources of Hg and evaluate the importance of transport and transformation processes in the cycling of Hg in the environment. The ocean is an integral part of the Earth and plays an important role in the global mercury cycle. However, there is a lack of a systematic review of Hg stable isotopes in marine environments. This review is divided into four sections: a) advances in Hg stable isotope analysis, b) the isotope ratios of Hg in various marine environmental matrices (seawater, sediment, and organisms), c) processes governing stable Hg isotope ratios in the ocean, and d) application of Hg stable isotopes to understand biotic uptake and migration. Mercury isotopes have provided much useful information on marine Hg cycling that cannot be given by Hg concentrations alone. This includes (i) sources of Hg in coastal or estuarine environments, (ii) transformation pathways and mechanisms of different forms of Hg in marine environments, (iii) trophic levels and feeding guilds of marine fish, and (iv) migration/habitat changes of marine fish. With the improvement of methods for seawater Hg isotope analysis (especially species-specific methods) and the measurement of Hg isotope fractionation during natural biogeochemical processes in the ocean, Hg stable isotopes will advance our understanding of the marine Hg cycle in the future, e.g., mercury exchange at the sea-atmosphere interface and seawater-sediment interface, contributions of different water masses to Hg in the ocean, fractionation mechanisms of Hg and MeHg transformation in seawater.
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Affiliation(s)
- Zhengwen Zhou
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education and College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Huiling Wang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education and College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
| | - Yanbin Li
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education and College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
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She Z, Wang J, He C, Jiang Z, Pan X, Wang M, Ma D, Shi Q, Yue Z. Molecular insights into the impacts of acid mine drainage on dissolved organic matter dynamics in pit lakes. Sci Total Environ 2023; 888:164097. [PMID: 37201814 DOI: 10.1016/j.scitotenv.2023.164097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 05/07/2023] [Accepted: 05/08/2023] [Indexed: 05/20/2023]
Abstract
Pit lakes are artificial hydrological features created by mining operations that typically suffer from acid mine drainage (AMD), which not only endangers water quality but also exacerbates carbon loss. However, the impacts of AMD on the fate and role of dissolved organic matter (DOM) in pit lakes remain unclear. This study employed negative electrospray ionization Fourier-transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) combined with biogeochemical analysis to examine DOM molecular variations and environmental controls across the AMD-induced acidic and metalliferous gradients in five pit lakes. The results demonstrated distinct DOM pools in pit lakes characterized by the prevalence of smaller aliphatic compounds compared to other waterbodies. AMD-induced geochemical gradients promoted DOM heterogeneity among pit lakes, with acidic pit lakes containing more lipid-like compounds. Acidity and metals enhanced DOM photodegradation, reducing the content, chemo-diversity and aromaticity. Organic sulfur was detected in high abundance, potentially from sulfate photo-esterification and mineral flotation agent. Furthermore, microbial involvements in carbon cycling were revealed by DOM-microbe correlation network, but microbial contributions to the DOM pools decreased under acidic and metal stresses. These findings highlight abnormal carbon dynamics caused by AMD pollution and integrate DOM fate into pit lake biogeochemistry, thereby contributing to management and remediation.
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Affiliation(s)
- Zhixiang She
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009, China; Anhui Engineering Research Center of Industrial Wastewater Treatment and Resource Recovery, Hefei University of Technology, Hefei, Anhui 230009, China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Jin Wang
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009, China; Anhui Engineering Research Center of Industrial Wastewater Treatment and Resource Recovery, Hefei University of Technology, Hefei, Anhui 230009, China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Chen He
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Changping District, Beijing 102249, China
| | - Zhengfeng Jiang
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Changping District, Beijing 102249, China
| | - Xin Pan
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009, China; Anhui Engineering Research Center of Industrial Wastewater Treatment and Resource Recovery, Hefei University of Technology, Hefei, Anhui 230009, China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Meichen Wang
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009, China; Anhui Engineering Research Center of Industrial Wastewater Treatment and Resource Recovery, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Ding Ma
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009, China; Anhui Engineering Research Center of Industrial Wastewater Treatment and Resource Recovery, Hefei University of Technology, Hefei, Anhui 230009, China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, Anhui 230009, China
| | - Quan Shi
- State Key Laboratory of Heavy Oil Processing, China University of Petroleum Beijing, Changping District, Beijing 102249, China
| | - Zhengbo Yue
- School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui 230009, China; Anhui Engineering Research Center of Industrial Wastewater Treatment and Resource Recovery, Hefei University of Technology, Hefei, Anhui 230009, China; Key Laboratory of Nanominerals and Pollution Control of Anhui Higher Education Institutes, Hefei University of Technology, Hefei, Anhui 230009, China.
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Santos-Neves JMCO, Patchineelam SR, Araujo DF, Godoy JMO, Almeida AC. Geochemical behavior of rare earth elements (REE) in urban reservoirs: the case of Funil Reservoir, Rio de Janeiro State, Brazil. Environ Monit Assess 2023; 195:659. [PMID: 37166583 DOI: 10.1007/s10661-023-11246-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Accepted: 04/12/2023] [Indexed: 05/12/2023]
Abstract
Rare earth elements (REE) have unique chemical properties, which allow their use as geochemical tracers. In this context, the present study aims to assess the role of Funil Reservoir on REE biogeochemical behavior. We collected water samples upstream of the reservoir (P-01) in the city of Queluz, inside the reservoir (P-02), and downstream of Funil Reservoir (P-03) in the city of Itatiaia, RJ. In the field, physicochemical parameters were measured using a probe (pH, temperature, electrical conductivity, and dissolved oxygen). In the laboratory, water samples were filtered (0.45 µm) and properly packed until chemical analysis. Chlorophyll a concentrations were determined by a spectrophotometric method and suspended particulate matter (SPM) by a gravimetric method. Ionic concentrations were determined by ion chromatography technique and REE concentrations were determined by ICP-MS. Chlorophyll a concentrations were higher in Funil Reservoir. Ionic concentrations in Queluz (P-01) suggest anthropic contamination. The sum of REE in the dissolved fraction ranged from 2.12 to 12.22 µg L-1. A positive anomaly of La in Queluz indicates anthropic contamination. The observed patterns indicate that Funil Reservoir acts as a biogeochemical barrier, modifying the fluvial transport of REE. Nonetheless, another factor that probably influences REE behavior is the algal bloom that occurs in reservoirs during the rainy season. The seasonal behavior of algae can influence REE biogeochemistry through the incorporation and release of trace metals.
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Affiliation(s)
- J M C O Santos-Neves
- Centro de Formação em Desenvolvimento Territorial, Universidade Federal do Sul da Bahia, Teixeira de Freitas, Brazil.
| | - S R Patchineelam
- Departamento de Geoquímica, Universidade Federal Fluminense, Niterói, Brazil
| | - D F Araujo
- Chimique des Écosystèmes Marins (CCEM), F-44300, Ifremer - Institut Français de Recherche Pour l'Exploitation de la Mer, Nantes, France
| | - J M O Godoy
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brazil
| | - A C Almeida
- Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brazil
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Honeyman AS, Merl T, Spear JR, Koren K. Optode-based chemical imaging of laboratory burned soil reveals millimeter-scale heterogeneous biogeochemical responses. Environ Res 2023; 224:115469. [PMID: 36773636 DOI: 10.1016/j.envres.2023.115469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 01/16/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Soil spatial responses to fire are unclear. Using optical chemical sensing with planar 'optodes', pH and dissolved O2 concentration were tracked spatially with a resolution of 360 μm per pixel for 72 h after burning soil in the laboratory with a butane torch (∼1300 °C) and then sprinkling water to simulate a postfire moisture event. Imaging data from planar optodes correlated with microbial activity (quantified via RNA transcripts). Post-fire and post-wetting, soil pH increased throughout the entire ∼13 cm × 17 cm × 20 cm rectangular cuboid of sandy loam soil. Dissolved O2 concentrations were not impacted until the application of water postfire. pH and dissolved O2 both negatively correlated (p < 0.05) with relative transcript expression for galactose metabolism, the degradation of aromatic compounds, sulfur metabolism, and narH. Additionally, dissolved O2 negatively correlated (p < 0.05) with the relative activity of carbon fixation pathways in Bacteria and Archaea, amoA/amoB, narG, nirK, and nosZ. nifH was not detected in any samples. Only amoB and amoC correlated with depth in soil (p < 0.05). Results demonstrate that postfire soils are spatially complex on a mm scale and that using optode-based chemical imaging as a chemical navigator for RNA transcript sampling is effective.
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Affiliation(s)
- Alexander S Honeyman
- Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, CO, 80401, USA
| | - Theresa Merl
- Aarhus University Centre for Water Technology, Department of Biology, Section for Microbiology, Aarhus University, Ny Munkegade 114, 8000, Aarhus C, Denmark
| | - John R Spear
- Civil and Environmental Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, CO, 80401, USA; Quantitative Biosciences and Engineering, Colorado School of Mines, 1500 Illinois Street, Golden, CO, 80401, USA.
| | - Klaus Koren
- Aarhus University Centre for Water Technology, Department of Biology, Section for Microbiology, Aarhus University, Ny Munkegade 114, 8000, Aarhus C, Denmark.
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Adams A, Daval D, Baumgartner LP, Bernard S, Vennemann T, Cisneros-Lazaro D, Stolarski J, Baronnet A, Grauby O, Guo J, Meibom A. Rapid grain boundary diffusion in foraminifera tests biases paleotemperature records. Commun Earth Environ 2023; 4:144. [PMID: 38665181 PMCID: PMC11041775 DOI: 10.1038/s43247-023-00798-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 04/06/2023] [Indexed: 04/28/2024]
Abstract
The oxygen isotopic compositions of fossil foraminifera tests constitute a continuous proxy record of deep-ocean and sea-surface temperatures spanning the last 120 million years. Here, by incubating foraminifera tests in 18O-enriched artificial seawater analogues, we demonstrate that the oxygen isotopic composition of optically translucent, i.e., glassy, fossil foraminifera calcite tests can be measurably altered at low temperatures through rapid oxygen grain-boundary diffusion without any visible ultrastructural changes. Oxygen grain boundary diffusion occurs sufficiently fast in foraminifera tests that, under normal upper oceanic sediment conditions, their grain boundaries will be in oxygen isotopic equilibrium with the surrounding pore fluids on a time scale of <100 years, resulting in a notable but correctable bias of the paleotemperature record. When applied to paleotemperatures from 38,400 foraminifera tests used in paleoclimate reconstructions, grain boundary diffusion can be shown to bias prior paleotemperature estimates by as much as +0.86 to -0.46 °C. The process is general and grain boundary diffusion corrections can be applied to other polycrystalline biocarbonates composed of small nanocrystallites (<100 nm), such as those produced by corals, brachiopods, belemnites, and molluscs, the fossils of which are all highly susceptible to the effects of grain boundary diffusion.
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Affiliation(s)
- Arthur Adams
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Damien Daval
- ISTerre, Université Grenoble Alpes, Université Savoie Mont Blanc, CNRS, IRD, IFSTTAR, 38058 Grenoble, France
| | - Lukas P. Baumgartner
- Institute of Earth Surface Dynamics, University of Lausanne, CH-1015 Lausanne, Switzerland
| | - Sylvain Bernard
- Museum National d’Histoire Naturelle, Sorbonne Université, CNRS UMR 7590, IMPMC, 75005 Paris, France
| | - Torsten Vennemann
- Institute of Earth Surface Dynamics, University of Lausanne, CH-1015 Lausanne, Switzerland
| | - Deyanira Cisneros-Lazaro
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Jarosław Stolarski
- Institute of Paleobiology, Polish Academy of Sciences, PL-00-818 Warsaw, Poland
| | - Alain Baronnet
- CNRS, CINaM, Aix-Marseille Université, 13009 Marseille, France
| | - Olivier Grauby
- CNRS, CINaM, Aix-Marseille Université, 13009 Marseille, France
| | - Jinming Guo
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Anders Meibom
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
- Center for Advanced Surface Analysis, Institute of Earth Science, University of Lausanne, CH−1015 Lausanne, Switzerland
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Gao K, Zhu H, Zhou W, Hu S, Zhang B, Dang Z, Liu C. Effect of phosphate on ferrihydrite transformation and the associated arsenic behavior mediated by sulfate-reducing bacterium. J Hazard Mater 2023; 448:130863. [PMID: 36708694 DOI: 10.1016/j.jhazmat.2023.130863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 01/18/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Although PO43- is commonly found in association with iron (oxyhydr)oxide, the effect of PO43- on ferrihydrite reduction, mineralogical transformation, and associated As behavior in sulfate-reducing bacteria (SRB)-rich environments remains unclear. In this study, batch experiments, together with geochemical, mineralogical, and biological analyses, were conducted to elucidate these processes. The results showed that SRB can reduce ferrihydrite via direct and indirect processes, and PO43- promoted ferrihydrite reduction by supporting SRB growth at low and medium PO43- loadings. However, at high loadings, PO43- stabilized the ferrihydrite. PO43- shifted the transformation of ferrihydrite from magnetite and mackinawite to vivianite, which scavenges As effectively by incorporating As into its particle. In systems with 0.5 mM SO42-, PO43- exerted a weak effect on As mobilization. However, in systems with 10 mM SO42-, substantial amounts of As were released into the solution, and PO43- impacted As behavior strongly. Low PO43- loadings increased the mobilization of As because of the competitive adsorption of PO43- on mackinawite. Medium and high PO43- loadings were beneficial for As immobilization because of the substitution of mackinawite by vivianite. These findings have important implications for understanding the biogeochemistry of iron (oxyhydr)oxide and As behavior in SRB-containing sediments.
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Affiliation(s)
- Kun Gao
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Huiyan Zhu
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wenjing Zhou
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Shiwen Hu
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bowei Zhang
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhi Dang
- The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou 510006, China
| | - Chongxuan Liu
- State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control, School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China.
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49
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Pan F, Xiao K, Cai Y, Li H, Guo Z, Wang X, Zheng Y, Zheng C, Bostick BC, Michael HA. Integrated effects of bioturbation, warming and sea-level rise on mobility of sulfide and metalloids in sediment porewater of mangrove wetlands. Water Res 2023; 233:119788. [PMID: 36863280 DOI: 10.1016/j.watres.2023.119788] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 02/16/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Global warming and sea-level rise exert profound impacts on coastal mangrove ecosystems, where widespread benthic crabs change sediment properties and regulate material cycles. How crab bioturbation perturbs the mobilities of bioavailable arsenic (As), antimony (Sb) and sulfide in sediment-water systems and their variability in response to temperature and sea-level rise is still unknown. By combining field monitoring and laboratory experiments, we found that As was mobilized under sulfidic conditions while Sb was mobilized under oxic conditions in mangrove sediments. Crab burrowing greatly enhanced oxidizing conditions, resulting in enhanced Sb mobilization and release but As sequestration by iron/manganese oxides. In control experiments with non-bioturbation, the more sulfidic conditions triggered the contrasting situation of As remobilization and release but Sb precipitation and burial. Moreover, the bioturbated sediments were highly heterogeneous for spatial distributions of labile sulfide, As and Sb as presented by 2-D high-resolution imaging and Moran's Index (patchy at the <1 cm scale). Warming stimulated stronger burrowing activities, which led to more oxic conditions and further Sb mobilization and As sequestration, whilst sea-level rise did the opposite via suppressing crab burrowing activity. This work highlights that global climate changes have the potential to significantly alter element cycles in coastal mangrove wetlands by regulating benthic bioturbation and redox chemistry.
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Affiliation(s)
- Feng Pan
- State Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen 361102, PR China
| | - Kai Xiao
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China.
| | - Yu Cai
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China
| | - Hailong Li
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Zhanrong Guo
- College of Ocean and Earth Sciences, Xiamen University, Xiamen 361102, PR China.
| | - Xinhong Wang
- State Key Laboratory of Marine Environmental Science, College of the Environment & Ecology, Xiamen University, Xiamen 361102, PR China
| | - Yan Zheng
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | - Chunmiao Zheng
- School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, PR China
| | | | - Holly A Michael
- Department of Geological Sciences, University of Delaware, Newark, DE, United States
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50
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Upin HE, Newell DL, Colman DR, Boyd ES. Tectonic settings influence the geochemical and microbial diversity of Peru hot springs. Commun Earth Environ 2023; 4:112. [PMID: 38665187 PMCID: PMC11041657 DOI: 10.1038/s43247-023-00787-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 03/29/2023] [Indexed: 04/28/2024]
Abstract
Tectonic processes control hot spring temperature and geochemistry, yet how this in turn shapes microbial community composition is poorly understood. Here, we present geochemical and 16 S rRNA gene sequencing data from 14 hot springs from contrasting styles of subduction along a convergent margin in the Peruvian Andes. We find that tectonic influence on hot spring temperature and geochemistry shapes microbial community composition. Hot springs in the flat-slab and back-arc regions of the subduction system had similar pH but differed in geochemistry and microbiology, with significant relationships between microbial community composition, geochemistry, and geologic setting. Flat-slab hot springs were chemically heterogeneous, had modest surface temperatures (up to 45 °C), and were dominated by members of the metabolically diverse phylum Proteobacteria. Whereas, back-arc hot springs were geochemically more homogenous, exhibited high concentrations of dissolved metals and gases, had higher surface temperatures (up to 81 °C), and host thermophilic archaeal and bacterial lineages.
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Affiliation(s)
- Heather E. Upin
- Department of Geosciences, Utah State University, Logan, UT USA
| | | | - Daniel R. Colman
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT USA
| | - Eric S. Boyd
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT USA
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