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Alves RN, Mariz CF, de Melo Alves MK, da Silva ASX, Zanardi-Lamardo E, Carvalho PSM. Zebrafish as a biological model for assessing water quality along tropical hydrographic river basins in Northeast Brazil. Ecotoxicology 2023; 32:908-925. [PMID: 37726560 DOI: 10.1007/s10646-023-02695-y] [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: 08/24/2023] [Indexed: 09/21/2023]
Abstract
Tropical rivers are the main destinations for tailings from urban, industrial and agricultural activities in the region studied. The present study aimed to investigate if early stages of zebrafish (Danio rerio) development is a viable biological model to assess the toxicity of surface waters of tropical rivers, and whether that toxicity could be correlated to standard water quality indexes. Embryos were exposed to samples from 55 sites from 10 hydrographic basins of rivers in Pernambuco State, northeastern Brazil. Lethality rates, sublethal toxicity based on the general morphology score (GMS) and frequencies of abnormalities were analyzed. Significant mortality was observed in samples of 7 basins. The GMS indicated significant delay in embryo-larval development in 50% of the samples. The highest toxicity was detected in basins within Recife metropolitan area, where 61% of the samples caused sublethal toxicity. Most frequent developmental abnormalities included non-inflation of the swim bladder, delayed hatching and blood stasis. The highest frequencies of blood stasis were detected in samples with highest NH3 concentrations, corroborated by a positive correlation suggesting the existence of a causal relationship. A significant correlation was detected between water quality indexes and GMS with a greater toxic effect being observed in samples collected in areas of greater urban density and greater contamination by domestic sewage. This study demonstrates that the early stages of the zebrafish is a viable ecotoxicological model to assess the toxicity of surface waters and can contribute to a better understanding between the chemical composition and the adverse effects suffered by fish early life stage fish in tropical rivers.
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Affiliation(s)
- Romulo Nepomuceno Alves
- Laboratório de Ecotoxicologia Aquática, Centro de Biociências, Universidade Federal de Pernambuco, Recife, 50670-920, Brazil
| | - Célio Freire Mariz
- Laboratório de Ecotoxicologia Aquática, Centro de Biociências, Universidade Federal de Pernambuco, Recife, 50670-920, Brazil
| | - Maria Karolaine de Melo Alves
- Laboratório de Ecotoxicologia Aquática, Centro de Biociências, Universidade Federal de Pernambuco, Recife, 50670-920, Brazil
| | | | - Eliete Zanardi-Lamardo
- Laboratório de Compostos Orgânicos em Ecossistemas Costeiros e Marinhos (OrganoMAR), Departamento de Oceanografia, Centro de Tecnologia e Geociências, Universidade Federal de Pernambuco, Recife, 50740-550, Brazil
| | - Paulo S M Carvalho
- Laboratório de Ecotoxicologia Aquática, Centro de Biociências, Universidade Federal de Pernambuco, Recife, 50670-920, Brazil.
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Wei G, Gao H, Li S, Liu M, Li R, Zhang Y, Shu Q, Wang W, Zhi L, Zeng Y, Na G. The occurrence and abundance of antibiotic resistance genes in rivers of tropical islands: a case of Hainan Island, China. Environ Sci Pollut Res Int 2023; 30:88936-88948. [PMID: 37450180 DOI: 10.1007/s11356-023-28522-9] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 06/27/2023] [Indexed: 07/18/2023]
Abstract
In this study, the occurrence and distribution of 49 antibiotic resistance genes (ARGs) and two integrase genes (intl1, intl2) in three major rivers of Hainan Island, China, were investigated in July 2021, and to explore the spatial distribution of the target genes in the three rivers with the potential influencing factors such as regional characteristics and environmental factors. The results showed that a total of 46 ARGs and two integrase genes were detected in water and sediment, and the absolute abundance of ARGs ranged from 1.16 × 103 to 2.97 × 107 copies/L and 3.34 × 103-1.55 × 107 copies/g. ARGs of macrolides, aminoglycosides, and sulfonamides were this study's main types of ARGs. The aadA2, tetE, ermF, tetX, aac(6')-Ib, tetW, and qnrS genes are predominant ARGs in the water and sediment of the three rivers. The relative abundance of ARGs shows higher abundance in the midstream and downstream and lower abundance in the upstream and estuarine. After conducting a correlation analysis, it was found that there was a significant positive correlation between the ARGs detected in the water of the three main rivers. However, in sediment, tetC was negatively correlated with tetQ, macB was negatively correlated with ermF and ereA (p < 0.05), while the remaining ARGs showed positive correlations. Specifically, there was no significant positive correlation between tetQ and tetC, macB and ereA, and ermF in the sediments. Among the nine environmental factors studied, pH was found to be the main factor associated with the occurrence of ARGs in the aquatic environment, but it was also significantly associated with only nine ARGs. Among the detected heavy metals, only Cd and Zn showed significant correlations with the two ARGs in the water bodies of the three main rivers. It indicated that the pollution of ARGs in the three major rivers was in the initial stage, the detection abundance was low, the influence of environmental factors was small, and the interaction between ARGs seemed to be the main driving force. This study provides a scientific basis for further understanding the occurrence of ARGs and their influencing factors in a tropical island environment, and lays a foundation for subsequent management.
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Affiliation(s)
- Guangke Wei
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Hui Gao
- National Marine Environmental Monitoring Center, Dalian, 116023, China
| | - Shisheng Li
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Min Liu
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Ruijing Li
- National Marine Environmental Monitoring Center, Dalian, 116023, China
| | - Yintian Zhang
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Qin Shu
- National Marine Environmental Monitoring Center, Dalian, 116023, China
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Wei Wang
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Liwen Zhi
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Yingxu Zeng
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China
| | - Guangshui Na
- Yazhou Bay Innovation Institute/Hainan Key Laboratory for Coastal Marine Eco-environment and Carbon Sink/College of Ecology and Environment, Hainan Tropical Ocean University, Sanya, 572022, China.
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Arantes CC, Laufer J, Mayer A, Moran EF, Sant' Anna IRA, Dutka-Gianelli J, Lopez MC, Doria CRC. Large-scale hydropower impacts and adaptation strategies on rural communities in the Amazonian floodplain of the Madeira River. J Environ Manage 2023; 336:117240. [PMID: 36870321 DOI: 10.1016/j.jenvman.2023.117240] [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: 09/12/2022] [Revised: 12/07/2022] [Accepted: 01/04/2023] [Indexed: 06/18/2023]
Abstract
Understanding social and environmental impacts and household adaptation strategies in the face of expansions in energy infrastructure projects is essential to inform mitigation and interventions programs that promote well-being. Here we conducted surveys in seven communities distributed across varying degrees of proximity to a hydropower dam complex in the Brazilian Amazon along about 250 km of the floodplain of the Madeira River. Based on interviews with 154 fishers from these communities, we examine how fishers perceived changes in fisheries yields, changes in the composition of fish species, and whether and how adaptation strategies had evolved 8-9 years after the dams' construction. Most respondents (91%) indicated declines in yields after the dams for both upstream and downstream zones. Multivariate analyses revealed statistically significant differences in the composition of species yields in pre-and post-dam periods for all communities and in both upstream and downstream zones (p < 0.001). The composition of yields diversified after the dams, with an apparent decline in yields of species of greatest market value (e.g., catfishes Brachyplatystoma spp., Pseudoplatystoma spp., and jatuarana Brycon spp.), and increases in yields of a set of other smaller bodied and faster growing species (e.g., 'branquinhas' Psectrogaster spp., Potamohinna spp., and sardines Triportheus spp.). Both downstream and upstream fishers indicated that fishing profits decreased since the dams' construction (76.8% and 67.9%, respectively). To cope with these changes, the majority of both upstream and downstream fishers (>70%) stated they have had to devote more time to fishing after the dams were built. The time fishers spend traveling to fishing locations also increased for upstream communities (77.1%), but not for downstream communities. Thirty-four percent of the interviewees changed the gear they use to fish after the dams construction, with twice as many mentioning uses of non-selective gear, such as gillnets, and declining use of traditional fishing gears such as castnets and a trap ("covi"). Fish consumption overall decreased: fish was consumed 'everyday' before the dams, but 1-2 times per week or rarely after the dams were built. Although the species that declined were those of high economic value, 53% of fishers stated fish prices have increased overall after the dams. These results shed light on the potential challenges faced by fishers and which adaptation strategies they have evolved to maintain livelihoods since the construction of the dams.
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Affiliation(s)
- Caroline C Arantes
- Division of Forestry and Natural Resources, West Virginia University, WV, USA; Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI, USA.
| | - Juliana Laufer
- Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI, USA; Ichthyology and Fisheries Laboratory, Department of Biology, Federal University of Rondônia, RO, Brazil
| | - Adam Mayer
- Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI, USA
| | - Emilio F Moran
- Center for Global Change and Earth Observations, Michigan State University, East Lansing, MI, USA
| | - Igor R A Sant' Anna
- Programa de Pós-graduação em Desenvolvimento Regional e Meio Ambiente, Federal University of Rondônia, RO, Brazil; Ichthyology and Fisheries Laboratory, Department of Biology, Federal University of Rondônia, RO, Brazil
| | | | - Maria Claudia Lopez
- Department of Community Sustainability, Michigan State University, East Lansing, MI, USA
| | - Carolina R C Doria
- Programa de Pós-graduação em Desenvolvimento Regional e Meio Ambiente, Federal University of Rondônia, RO, Brazil; Ichthyology and Fisheries Laboratory, Department of Biology, Federal University of Rondônia, RO, Brazil
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Andreia Dos Santos J, Barbosa Silva C, Soares de Santana H, Cano-Barbacil C, Agostinho AA, Normando FT, Cabeza JR, Roland F, García-Berthou E. Assessing the short-term response of fish assemblages to damming of an Amazonian river. J Environ Manage 2022; 307:114571. [PMID: 35085970 DOI: 10.1016/j.jenvman.2022.114571] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 08/05/2021] [Revised: 01/17/2022] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
The enormous biodiversity of tropical freshwater combined with a considerable increase in the construction of reservoirs urges to understand the ecological effects caused by damming. Using rarely available data obtained before (one year) and after (four years) the filling of a hydroelectric plant on the Teles Pires River (Amazon River basin), the effects on abundance, biomass, and diversity of the fish assemblage were evaluated using two complementary approaches: a BACI (before-after-control-impact) design with mixed models and analyses of covariance. Significant Before-After × Control-Impact interactions in abundance, biomass, and species richness were observed, with decreases of abundance and species richness and more stable biomass after filling. Some abundant species, such as Jupiaba polylepis, Jupiaba acanthogaster, Knodus cf. heteresthes, and Moenkhausia lepidura among others, declined in abundance or disappeared from the impact sites. However, temporal and particularly spatial variation independent of damming explained more variation in all the response variables analyzed, including species composition, and analyses of covariance demonstrated general negative trends irrespective of damming. This study illustrates the usefulness of BACI designs to assess the effects of damming but also that other statistical approaches are complementary, given the difficulty of identifying control sites and the short length of most ecological time series. The results also suggest that preserving tributaries upstream of reservoirs and natural regimes of spatial and temporal environmental variation might help to mitigate the impacts of damming in tropical ecosystems.
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Affiliation(s)
- Joyce Andreia Dos Santos
- Departamento de Biologia, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil; GRECO, Institute of Aquatic Ecology, University of Girona, 17003, Girona, Spain.
| | - Camila Barbosa Silva
- Bios Consultoria e Serviços Ambientais Ltda, Rua José Claudino, 318A, Bairro Centro, CEP: 37200-222, Lavras, MG, Brazil; Laboratório de Ecologia de Peixes, Setor de Ecologia, Departamento de Biologia, Universidade Federal de Lavras, Campus Universitário, Caixa Postal 3037, CEP 37200-000, Lavras, MG, Brazil.
| | - Herick Soares de Santana
- Departamento de Áreas Acadêmicas, Instituto Federal de Educação, Ciência e Tecnologia de Goiás, Campus Águas Lindas de Goiás, R. 21 - Jardim Querência, CEP 72910-733, Águas Lindas de Goiás, GO, Brazil.
| | - Carlos Cano-Barbacil
- GRECO, Institute of Aquatic Ecology, University of Girona, 17003, Girona, Spain.
| | - Angelo Antonio Agostinho
- Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais - PEA, Universidade Estadual de Maringá - UEM, Av. Colombo, 5790, CEP 87020-900, Maringá, PR, Brazil.
| | - Felipe Talin Normando
- Bios Consultoria e Serviços Ambientais Ltda, Rua José Claudino, 318A, Bairro Centro, CEP: 37200-222, Lavras, MG, Brazil.
| | - João Rodrigo Cabeza
- Usina Hidrelétrica de Teles Pires (CHTP), Margem Direita Do rio Teles Pires, Zona Rural, S/N, 68195-000, Jacareacanga, PA, Brazil.
| | - Fabio Roland
- Departamento de Biologia, Universidade Federal de Juiz de Fora, Juiz de Fora, Brazil.
| | - Emili García-Berthou
- GRECO, Institute of Aquatic Ecology, University of Girona, 17003, Girona, Spain.
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Chong XY, Vericat D, Batalla RJ, Teo FY, Lee KSP, Gibbins CN. A review of the impacts of dams on the hydromorphology of tropical rivers. Sci Total Environ 2021; 794:148686. [PMID: 34218154 DOI: 10.1016/j.scitotenv.2021.148686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 12/03/2020] [Revised: 06/19/2021] [Accepted: 06/22/2021] [Indexed: 06/13/2023]
Abstract
A major programme of dam building is underway in many of the world's tropical countries. This raises the question of whether existing research is sufficient to fully understand the impacts of dams on tropical river systems. This paper provides a systematic review of what is known about the impacts of dams on river flows, sediment dynamics and geomorphic processes in tropical rivers. The review was conducted using the SCOPUS® and Web of Science® databases, with papers analysed to look for temporal and geographic patterns in published work, assess the approaches used to help understand dam impacts, and assess the nature and magnitude of impacts on the flow regimes and geomorphology ('hydromorphology') of tropical rivers. As part of the review, a meta-analysis was used to compare key impacts across different climate regions. Although research on tropical rivers remains scarce, existing work is sufficient to allow us to draw some very broad, general conclusions about the nature of hydromorphic change: tropical dams have resulted in reductions in flow variability, lower flood peaks, reductions in sediment supply and loads, and complex geomorphic adjustments that include both channel incision and aggradation at different times and downstream distances. At this general level, impacts are consistent with those observed in other climate regions. However, studies are too few and variable in their focus to determine whether some of the more specific aspects of change observed in tropical rivers (e.g. time to reach a new, adjusted state, and downstream recovery distance) differ consistently from those in other regions. The review helps stress the need for research that incorporates before-after comparisons of flow and geomorphic conditions, and for the wider application of tools available now for assessing hydromorphic change. Very few studies have considered hydromorphic processes when designing flow operational policies for tropical dams.
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Affiliation(s)
- Xin Yi Chong
- School of Environmental and Geographical Sciences, University of Nottingham Malaysia, Malaysia.
| | - Damià Vericat
- Fluvial Dynamics Research Group, University of Lleida, E25198 Lleida, Catalonia, Spain; Forest Science and Technology Centre of Catalonia, E25280 Solsona, Catalonia, Spain.
| | - Ramon J Batalla
- Fluvial Dynamics Research Group, University of Lleida, E25198 Lleida, Catalonia, Spain; Catalan Institute for Water Research, E17100 Girona, Catalonia, Spain; Austral University of Chile, Valdivia, Chile.
| | - Fang Yenn Teo
- Department of Civil Engineering, University of Nottingham Malaysia, Malaysia.
| | | | - Christopher N Gibbins
- School of Environmental and Geographical Sciences, University of Nottingham Malaysia, Malaysia.
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Harun MA, Safari MJS, Gul E, Ab Ghani A. Regression models for sediment transport in tropical rivers. Environ Sci Pollut Res Int 2021; 28:53097-53115. [PMID: 34023993 DOI: 10.1007/s11356-021-14479-0] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/14/2021] [Indexed: 06/12/2023]
Abstract
The investigation of sediment transport in tropical rivers is essential for planning effective integrated river basin management to predict the changes in rivers. The characteristics of rivers and sediment in the tropical region are different compared to those of the rivers in Europe and the USA, where the median sediment size tends to be much more refined. The origins of the rivers are mainly tropical forests. Due to the complexity of determining sediment transport, many sediment transport equations were recommended in the literature. However, the accuracy of the prediction results remains low, particularly for the tropical rivers. The majority of the existing equations were developed using multiple non-linear regression (MNLR). Machine learning has recently been the method of choice to increase model prediction accuracy in complex hydrological problems. Compared to the conventional MNLR method, machine learning algorithms have advanced and can produce a useful prediction model. In this research, three machine learning models, namely evolutionary polynomial regression (EPR), multi-gene genetic programming (MGGP) and M5 tree model (M5P), were implemented to model sediment transport for rivers in Malaysia. The formulated variables for the prediction model were originated from the revised equations reported in the relevant literature for Malaysian rivers. Among the three machine learning models, in terms of different statistical measurement criteria, EPR gives the best prediction model, followed by MGGP and M5P. Machine learning is excellent at improving the prediction distribution of high data values but lacks accuracy compared to observations of lower data values. These results indicate that further study needs to be done to improve the machine learning model's accuracy to predict sediment transport.
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Affiliation(s)
- Mohd Afiq Harun
- River Engineering and Urban Drainage Research Centre (REDAC), Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia
| | | | - Enes Gul
- Department of Civil Engineering, Inonu University, Malatya, Turkey
| | - Aminuddin Ab Ghani
- River Engineering and Urban Drainage Research Centre (REDAC), Universiti Sains Malaysia, Engineering Campus, 14300, Nibong Tebal, Penang, Malaysia
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Lucas-Solis O, Moulatlet GM, Guamangallo J, Yacelga N, Villegas L, Galarza E, Rosero B, Zurita B, Sabando L, Cabrera M, Gimiliani GT, Capparelli MV. Preliminary Assessment of Plastic Litter and Microplastic Contamination in Freshwater Depositional Areas: The Case Study of Puerto Misahualli, Ecuadorian Amazonia. Bull Environ Contam Toxicol 2021; 107:45-51. [PMID: 33576853 DOI: 10.1007/s00128-021-03138-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 09/30/2020] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
We quantify plastic litter (PL, > 2 cm) and microplastics (MP, < 5 mm) from the sediments of a beach formed at a riverine depositional area, at the upper Amazon River basin, Ecuador. In the collection area (4400 m2), the PL density was 0.045 items m-2, where low-density polyethylene bags were the prevalent PL. The beach was classified as "very clean" (Clean Coast Index (CCI) of 1.3 items m-2). Regarding MP, in 55 sampling stations, average MP concentrations ranged from 0 to 2200 items kg-1 of dry sediment (0.5-2 mm), and 0-4200 items kg-1 of dry sediment (2-5 mm). Blue fibers were the prevalent MP. Our results represent the first report to show the ubiquitous presence of PL and MP for the area. The monitoring and management of plastic disposal in freshwater beaches are necessary, as here we report a small part of an undocumented issue.
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Affiliation(s)
- Oscar Lucas-Solis
- Facultad de Ciencias de la Tierra y Agua, Universidad Regional Amazónica Ikiam, km 7, via a Muyuna, Tena, Napo, Ecuador
| | - Gabriel M Moulatlet
- Facultad de Ciencias de la Tierra y Agua, Universidad Regional Amazónica Ikiam, km 7, via a Muyuna, Tena, Napo, Ecuador
| | - Jeniffer Guamangallo
- Facultad de Ciencias de la Vida, Universidad Regional Amazónica Ikiam, km 7, vía a Muyuna, Tena, Napo, Ecuador
| | - Naomi Yacelga
- Facultad de Ciencias de la Vida, Universidad Regional Amazónica Ikiam, km 7, vía a Muyuna, Tena, Napo, Ecuador
| | - Lipsi Villegas
- Facultad de Ciencias de la Vida, Universidad Regional Amazónica Ikiam, km 7, vía a Muyuna, Tena, Napo, Ecuador
| | - Emily Galarza
- Facultad de Ciencias de la Tierra y Agua, Universidad Regional Amazónica Ikiam, km 7, via a Muyuna, Tena, Napo, Ecuador
| | - Bryan Rosero
- Facultad de Ciencias de la Tierra y Agua, Universidad Regional Amazónica Ikiam, km 7, via a Muyuna, Tena, Napo, Ecuador
| | - Bryan Zurita
- Facultad de Ciencias de la Tierra y Agua, Universidad Regional Amazónica Ikiam, km 7, via a Muyuna, Tena, Napo, Ecuador
| | - Lizeth Sabando
- Facultad de Ciencias de la Tierra y Agua, Universidad Regional Amazónica Ikiam, km 7, via a Muyuna, Tena, Napo, Ecuador
| | - Marcela Cabrera
- Laboratorio Nacional de Referencia del Agua, Universidad Regional Amazónica Ikiam, Tena, Ecuador
| | | | - Mariana V Capparelli
- Facultad de Ciencias de la Tierra y Agua, Universidad Regional Amazónica Ikiam, km 7, via a Muyuna, Tena, Napo, Ecuador.
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Noriega C, Medeiros C, Araujo M, Silva AX, Costa M, Pereira NA, de Lima EES, da Silva DST, de Campos Pereira S, Rollnic M. Long-term water quality conditions and trends in 12 tropical coastal rivers in Northeast Brazil. Environ Monit Assess 2021; 193:308. [PMID: 33909164 DOI: 10.1007/s10661-021-09074-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 04/10/2020] [Accepted: 04/11/2021] [Indexed: 06/12/2023]
Abstract
The water quality and trends in 12 tropical rivers in northeastern Brazil over a 27-year period (1990-2016; N = 39,008 samples) were evaluated. The analyzed parameters included temperature, conductivity, pH, dissolved oxygen (DO), biochemical oxygen demand (BOD), nitrogen (NH4+), total phosphorus (P), and fecal coliforms. Densely populated basins (> 1000 inhab km-2) presented lower DO values (average 3.4 mg l-1; 43% DO saturation), while those with low demographic density (< 100 inhab km-2) presented values that aligned well with the recommendations of environmental legislation (average 5.8 mg l-1; 75% DO saturation). The NH4+ and P compound concentrations were typical of water bodies affected by urban inputs. The average p values were above the allowable limit (< 0.1 mg l-1) at all stations. The NH4+ values were high at the stations showing low DO concentrations, which suggested that due to reducing conditions after NH4+ accumulation was favored in those aquatic systems. In densely populated basins, the average fecal coliform concentrations were > 40,000 MPN 100 ml-1, indicating the input of improperly treated domestic/industrial liquid wastes. For the period from 1990 to 2016, 45% of the stations (N = 19) showed a rate of DO reduction that ranged from 0.01 to 0.17 mg l-1.O2 year-1. An increase in NH4+ concentrations was observed in 33% of the stations (N = 14), with an estimated average increase rate from 0.013 to 1.8 mg l-1 NH4+ year-1. These results demonstrated that the rates of increase in anthropogenic factors were significant (p < 0.05), while the natural factors remained constant.
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Affiliation(s)
- Carlos Noriega
- Department of Oceanography, Federal University of Pernambuco - UFPE, Av. Arquitetura s/n, Recife, 50740-550, Brazil.
| | - Carmen Medeiros
- Department of Oceanography, Federal University of Pernambuco - UFPE, Av. Arquitetura s/n, Recife, 50740-550, Brazil
| | - Moacyr Araujo
- Department of Oceanography, Federal University of Pernambuco - UFPE, Av. Arquitetura s/n, Recife, 50740-550, Brazil
| | | | - Mauricio Costa
- Laboratório de Pesquisa E Monitoramento Ambiental Marinho (LAPMAR), Federal University of Pará, Belém, Brazil
| | | | | | | | | | - Marcelo Rollnic
- Laboratório de Pesquisa E Monitoramento Ambiental Marinho (LAPMAR), Federal University of Pará, Belém, Brazil
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Salgado J, Vélez MI, González-Arango C, Rose NL, Yang H, Huguet C, Camacho JS, O'Dea A. A century of limnological evolution and interactive threats in the Panama Canal: Long-term assessments from a shallow basin. Sci Total Environ 2020; 729:138444. [PMID: 32380321 DOI: 10.1016/j.scitotenv.2020.138444] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/31/2020] [Accepted: 04/02/2020] [Indexed: 06/11/2023]
Abstract
Large tropical river dam projects are expected to accelerate over the forthcoming decades to satisfy growing demand for energy, irrigation and flood control. When tropical rivers are dammed the immediate impacts are relatively well studied, but the long-term (decades-centuries) consequences of impoundment remain poorly known. We combined historical records of water quality, river flow and climate with a multi-proxy (macrofossils, diatoms, biomarkers and trace elements) palaeoecological approach to reconstruct the limnological evolution of a shallow basin in Gatun Lake (Panama Canal, Panama) and assess the effects of multiple linked factors (river damming, forest flooding, deforestation, invasive species, pollution and hydro-climate) on the study area. Results show that a century after dam construction, species invasion, deforestation and salt intrusions have forced a gradual change in the study basin from a swamp-type environment towards a more saline lake-governed system of benthic-littoral production likely associated with the expansion of macrophyte stands. Hydrology still remains the most important long-term (decades) structural factor stimulating salinity intrusions, primary productivity, deposition of minerals, and reduction of water transparency during wet periods. During dry periods, physical-chemical conditions are in turn linked to clear water and aerobic conditions while nutrients shift to available forms for the aquatic biota in the detrital-rich reductive sediments. Our study suggests that to preserve the natural riverine system functioning of this area of the Panama Canal, management activities must address long-term ecosystem structural drivers such as river flow, runoff patterns and physical-chemical conditions.
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Affiliation(s)
- Jorge Salgado
- Laboratorio de Palinología y Paleoecología Tropical, Departamento de Ciencias Biológicas, Universidad de Los Andes, Carrera 1# 18A-12, Bogotá, Colombia; Smithsonian Tropical Research Institute, PO Box 0843-03092, Balboa, Panama; Facultad de Ingeniería, Universidad Católica de Colombia, Bogotá, Avenida Caracas # 46-72, Colombia.
| | - María I Vélez
- University of Regina, Department of Geology, 3737 Wascana Parkway, Regina, Saskatchewan S4S 0A2, Canada
| | - Catalina González-Arango
- Laboratorio de Palinología y Paleoecología Tropical, Departamento de Ciencias Biológicas, Universidad de Los Andes, Carrera 1# 18A-12, Bogotá, Colombia
| | - Neil L Rose
- Environmental Change Research Centre, Department of Geography, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Handong Yang
- Environmental Change Research Centre, Department of Geography, University College London, Gower Street, London WC1E 6BT, United Kingdom
| | - Carme Huguet
- Departamento de Geociencias, Universidad de Los Andes, Carrera 1#18A-12, Bogotá, Colombia
| | - Juan S Camacho
- Departamento de Geociencias, Universidad de Los Andes, Carrera 1#18A-12, Bogotá, Colombia
| | - Aaron O'Dea
- Smithsonian Tropical Research Institute, PO Box 0843-03092, Balboa, Panama; Department of Biological, Geological and Environmental Sciences, University of Bologna, Bologna, Italy
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10
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Rico-Sánchez AE, Rodríguez-Romero AJ, Sedeño-Díaz JE, López-López E. Assessment of seasonal and spatial variations of biochemical markers in Corydalus sp. (Megaloptera: Corydalidae), a non-conventional biomonitor, in a mountain cloud forest in Mexico. Environ Sci Pollut Res Int 2020; 27:30755-30766. [PMID: 32474780 DOI: 10.1007/s11356-020-09161-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 09/11/2019] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
Rivers are critical ecosystems for protecting and harboring high biodiversity. Tropical rivers particularly are unique for facing extreme climatic events under the current accelerated disruption from human activities. The Bobos-Nautla river basin is exposed to climatic events and disturbances from anthropogenic impacts that stress aquatic organisms. We assessed the health condition of this river system using a non-conventional biomonitor, Corydalus sp., with a set of early-warning biomarkers including lipid peroxidation levels (LPO) and antioxidant activity, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and the neurotransmitter acetylcholinesterase (AChE) considering their spatial and temporal variations. Biomarkers and water quality parameters were analyzed, and the integrated biomarker response (IBR) was assessed as a stress index. Biomarkers showed no significant spatial differences; however, a high-stress period during the rainy season was detected, evidenced by the highest LPO levels; this period is related to the leaching of allochthonous materials from agricultural and urban zones. The peak IBR value during the rainy season confirmed the seasonality of biomarkers. A slight increase in IBR was recorded in lowlands, seemingly associated with agricultural land and human settlements. A principal component analysis showed nutrient enrichment during the rainy season and depletion during the cold-dry season, together with a peak activity of antioxidant enzymes. These results highlight the importance of climatic events such as the rainy season on the health condition of Corydalus sp., which is highly sensitive to the complex mixtures of pollutants that enter the waterbody during extreme climatic events, promoting oxidative stress. Our results also showed the ability of Corydalus sp. to recover and return to a basal level.
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Affiliation(s)
- Axel Eduardo Rico-Sánchez
- Laboratorio de Evaluación de la Salud de los Ecosistemas Acuáticos, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n 11340, Miguel Hidalgo, Mexico City, Mexico
| | - Alexis Joseph Rodríguez-Romero
- Laboratorio de Evaluación de la Salud de los Ecosistemas Acuáticos, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n 11340, Miguel Hidalgo, Mexico City, Mexico
| | - Jacinto Elías Sedeño-Díaz
- Coordinación Politécnica para la Sustentabilidad, Instituto Politécnico Nacional, Av. Instituto Politécnico Nacional s/n Esq. Wilfrido Massieu, 07738, Mexico City, Mexico
| | - Eugenia López-López
- Laboratorio de Evaluación de la Salud de los Ecosistemas Acuáticos, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Prolongación de Carpio y Plan de Ayala s/n 11340, Miguel Hidalgo, Mexico City, Mexico.
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11
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Dsikowitzky L, Hagemann L, Ariyani F, Irianto HE, Schwarzbauer J. Complex organic pollutant mixtures originating from industrial and municipal emissions in surface waters of the megacity Jakarta-an example of a water pollution problem in emerging economies. Environ Sci Pollut Res Int 2017; 24:27539-27552. [PMID: 28929288 DOI: 10.1007/s11356-017-0164-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 03/06/2017] [Accepted: 09/07/2017] [Indexed: 05/22/2023]
Abstract
During the last decades, the global industrial production partly shifted from industrialized nations to emerging and developing countries. In these upcoming economies, the newly developed industrial centers are generally located in densely populated areas, resulting in the discharge of often only partially treated industrial and municipal wastewaters into the surface waters. There is a huge gap of knowledge about the composition of the complex organic pollutant mixtures occurring in such heavily impacted areas. Therefore, we applied a non-target screening to comprehensively assess river pollution in a large industrial area located in the megacity Jakarta. More than 100 structurally diverse organic contaminants were identified, some of which were reported here for the first time as environmental contaminants. The concentrations of paper manufacturing chemicals in river water-for example, of the endocrine-disrupting compound bisphenol A (50-8000 ng L-1)-were as high as in pure untreated paper industry wastewaters. The non-target screening approach is the adequate tool for the identification of water contaminants in the new global centers of industrial manufacturing-as the first crucial step towards the evaluation of as yet unrecognized environmental risks.
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Affiliation(s)
- Larissa Dsikowitzky
- Institute of Geology and Geochemistry of Petroleum and Coal, RWTH Aachen University, Lochnerstrasse 4-20, 52056, Aachen, Germany.
| | - Lukas Hagemann
- Institute of Geology and Geochemistry of Petroleum and Coal, RWTH Aachen University, Lochnerstrasse 4-20, 52056, Aachen, Germany
| | - Farida Ariyani
- Research and Development Center for Marine and Fisheries Product Processing and Biotechnology (BBP4BKP), Ministry of Marine Affairs and Fisheries, Jl. K.S. Tubun, Petamburan VI, Central Jakarta, 10260, Indonesia
| | - Hari Eko Irianto
- Research and Development Center for Marine and Fisheries Product Processing and Biotechnology (BBP4BKP), Ministry of Marine Affairs and Fisheries, Jl. K.S. Tubun, Petamburan VI, Central Jakarta, 10260, Indonesia
| | - Jan Schwarzbauer
- Institute of Geology and Geochemistry of Petroleum and Coal, RWTH Aachen University, Lochnerstrasse 4-20, 52056, Aachen, Germany
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12
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Dsikowitzky L, Sträter M, Ariyani F, Irianto HE, Schwarzbauer J. First comprehensive screening of lipophilic organic contaminants in surface waters of the megacity Jakarta, Indonesia. Mar Pollut Bull 2016; 110:654-664. [PMID: 26880129 DOI: 10.1016/j.marpolbul.2016.02.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [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: 09/29/2015] [Revised: 01/28/2016] [Accepted: 02/04/2016] [Indexed: 06/05/2023]
Abstract
Jakarta is an Indonesian coastal megacity with over 10 million inhabitants. The rivers flowing through the city receive enormous amounts of untreated wastewaters and discharge their pollutant loads into Jakarta Bay. We utilized a screening approach to identify those site-specific compounds that represent the major contamination of the cities' water resources, and detected a total number of 71 organic contaminants in Jakarta river water samples. Especially contaminants originating from municipal wastewater discharges were detected in high concentrations, including flame retardants, personal care products and pharmaceutical drugs. A flame retardant, a synthetic fragrance and caffeine were used as marker compounds to trace the riverine transport of municipal wastewaters into Jakarta Bay. These markers are also appropriate to trace municipal wastewater discharges to other tropical coastal ecosystems. This application is in particular useful to evaluate wastewater inputs from land-based sources to habitats which are sensitive to changing water quality, like coral reefs.
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Affiliation(s)
- L Dsikowitzky
- Institute of Geology and Geochemistry of Petroleum and Coal, RWTH Aachen University, Lochnerstrasse 4-20, 52056 Aachen, Germany.
| | - M Sträter
- Institute of Geology and Geochemistry of Petroleum and Coal, RWTH Aachen University, Lochnerstrasse 4-20, 52056 Aachen, Germany
| | - F Ariyani
- Research and Development Center for Marine and Fisheries Product Processing and Biotechnology (BBP4KP), Ministry of Marine Affairs and Fisheries, Jl. K.S. Tubun, Petamburan VI, Jakarta Pusat 10260, Indonesia
| | - H E Irianto
- Research Center for Fisheries Management and Conservation, Ministry of Marine Affairs and Fisheries, Gedung Balitbang-2, Jl. Pasir Putih II, Ancol Timur, Jakarta 14430, Indonesia
| | - J Schwarzbauer
- Institute of Geology and Geochemistry of Petroleum and Coal, RWTH Aachen University, Lochnerstrasse 4-20, 52056 Aachen, Germany
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Boëchat IG, Krüger A, Chaves RC, Graeber D, Gücker B. Land-use impacts on fatty acid profiles of suspended particulate organic matter along a larger tropical river. Sci Total Environ 2014; 482-483:62-70. [PMID: 24636887 DOI: 10.1016/j.scitotenv.2014.02.111] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [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: 12/17/2013] [Revised: 02/22/2014] [Accepted: 02/24/2014] [Indexed: 05/25/2023]
Abstract
Land-use change, such as agricultural expansion and urbanization, can affect riverine biological diversity and ecosystem functioning. Identifying the major stressors associated with catchment land-use change is a prerequisite for devising successful river conservation and restoration strategies. Here, we analyzed land-use effects on the fatty acid (FA) composition and concentrations in suspended particulate organic matter (SPOM) along a fourth-order tropical river, the Rio das Mortes. Thereby, we aimed at testing the potential of fatty acids in riverine suspended particulate organic matter (SPOM-FAs) as indicators of land-use change in tropical catchments, and at identifying major human impacts on the biochemical composition of SPOM, which represents an important basal energy and organic matter resource for aquatic consumers. River water SPOM and total FA concentrations ranged between 2.8 and 10.2mg dry weight(DW)L(-1) and between 130.6 and 268.2μg DW L(-1), respectively, in our study. Urbanization was the only land-use category correlating with both FA composition and concentrations, despite its low contribution to whole catchment (1.5-5.6%) and riparian buffer land cover (1.7-6.6%). Higher concentrations of saturated FAs, especially C16:0 and C18:0, which are the main components of domestic sewage, were observed at sampling stations downstream of urban centers, and were highly correlated to urbanization, especially within the 60m riparian buffer zone. Compared to water chemical characteristics (inorganic nutrients, dissolved oxygen, pH, and specific conductance) and river habitat structural integrity, FA variables exhibited a higher variability along the investigated river and were more strongly correlated to urban land use, suggesting that SPOM-FA profiles may be an efficient indicator of urban land-use impacts on larger tropical rivers. High total FA concentrations in the SPOM of urbanized tropical rivers may represent high-energy biochemical subsidies to food webs, potentially leading to changes in functional ecosystem characteristics, such as bacterial and suspension-feeder production.
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Affiliation(s)
- I G Boëchat
- Department of Biosystems Engineering, Federal University of São João del-Rei, Praça Dom Helvécio 74, 36301-160 São João del Rei, MG, Brazil.
| | - A Krüger
- Leibniz-Institute of Freshwater Ecology and Inland Fisheries - IGB, Müggelseedamm 301, 12587 Berlin, Germany
| | - R C Chaves
- Department of Biosystems Engineering, Federal University of São João del-Rei, Praça Dom Helvécio 74, 36301-160 São João del Rei, MG, Brazil; Graduate Program of Bioengineering, Federal University of São João del-Rei, Praça Dom Helvécio 74, 36301-160 São João del Rei, MG, Brazil
| | - D Graeber
- Department of Bioscience - Freshwater Ecology, Aarhus University, Vejlsøvej 25, 8600 Silkeborg, Denmark
| | - B Gücker
- Department of Biosystems Engineering, Federal University of São João del-Rei, Praça Dom Helvécio 74, 36301-160 São João del Rei, MG, Brazil
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14
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Marwick TR, Borges AV, Van Acker K, Darchambeau F, Bouillon S. Disproportionate Contribution of Riparian Inputs to Organic Carbon Pools in Freshwater Systems. Ecosystems 2014; 17:974-989. [PMID: 25152691 PMCID: PMC4133959 DOI: 10.1007/s10021-014-9772-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [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: 12/22/2013] [Accepted: 03/21/2014] [Indexed: 11/27/2022]
Abstract
A lack of appropriate proxies has traditionally hampered our ability to distinguish riverine organic carbon (OC) sources at the landscape scale. However, the dissection of C4 grasslands by C3-enriched riparian vegetation, and the distinct carbon stable isotope signature (δ13C) of these two photosynthetic pathways, provides a unique setting to assess the relative contribution of riparian and more distant sources to riverine C pools. Here, we compared δ13C signatures of bulk sub-basin vegetation (δ13CVEG) with those of riverine OC pools for a wide range of sites within two contrasting river basins in Madagascar. Although C3-derived carbon dominated in the eastern Rianala catchment, consistent with the dominant vegetation, we found that in the C4-dominated Betsiboka basin, riverine OC is disproportionately sourced from the C3-enriched riparian fringe, irrespective of climatic season, even though δ13CVEG estimates suggest as much as 96% of vegetation cover in some Betsiboka sub-basins may be accounted for by C4 biomass. For example, δ13C values for river bed OC were on average 6.9 ± 2.7‰ depleted in 13C compared to paired estimates of δ13CVEG. The disconnection of the wider C4-dominated basin is considered the primary driver of the under-representation of C4-derived C within riverine OC pools in the Betsiboka basin, although combustion of grassland biomass by fire is likely a subsidiary constraint on the quantity of terrestrial organic matter available for export to these streams and rivers. Our findings carry implications for the use of sedimentary δ13C signatures as proxies for past forest-grassland distribution and climate, as the C4 component may be considerably underestimated due to its disconnection from riverine OC pools.
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Affiliation(s)
- Trent R. Marwick
- Department of Earth and Environmental Sciences, Katholieke Universiteit Leuven (KU Leuven), Celestijnenlaan 200E, 3001 Leuven, Belgium
| | - Alberto Vieira Borges
- Chemical Oceanography Unit, University of Liège (ULg), Institut de Physique (B5), 4000 Liège, Belgium
| | - Kristof Van Acker
- Department of Earth and Environmental Sciences, Katholieke Universiteit Leuven (KU Leuven), Celestijnenlaan 200E, 3001 Leuven, Belgium
| | - François Darchambeau
- Chemical Oceanography Unit, University of Liège (ULg), Institut de Physique (B5), 4000 Liège, Belgium
| | - Steven Bouillon
- Department of Earth and Environmental Sciences, Katholieke Universiteit Leuven (KU Leuven), Celestijnenlaan 200E, 3001 Leuven, Belgium
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