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Benítez S, Lagos NA, Duarte C, Cid MJ, Navarro JM. Effects of ocean acidification and warming on physiological and behavioural responses of an herbivore snail to waterborne predator cues. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 340:122798. [PMID: 37879553 DOI: 10.1016/j.envpol.2023.122798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 10/14/2023] [Accepted: 10/22/2023] [Indexed: 10/27/2023]
Abstract
Ocean Acidification (OA) and Ocean Warming (OW) represent major climate stressors that may disrupt species interactions. However, despite the knowledge about the impacts of OA and OW on the performance of individual species, it is still unclear how biological interactions can be modified by the combined effects of these stressors. Consequently, in this study, we assess the effects of changes in temperature (12 °C and 20 °C) and pCO2 (500 and 1600 μatm) levels in seawater, along with the presence/absence of waterborne cues from the predator crab Homalaspis plana on the physiological and behavioural performance of the snail Tegula atra. Snail consumption rate was positively affected by OW and negatively by predator cues whereas absorption efficiency (AE) was positively affected by OW without interactions among these stressors. Oxygen uptake of snails reared in OW conditions was greater than those in control conditions, but only at control pCO2 levels. When pCO2 level was also raised, the positive effect of warmer temperature on oxygen uptake was reduced. While biomass was negatively affected by OW, OA and predator cues, without interactions. In the presence of predator cues the self-righting times of snails were significantly slower in individuals reared at OW conditions. Additionally, OA and OW conditions do not affect the prey hunting, efficiency (consumption) and preference, and claw strength of the predatory crab. These results indicate that OA and OW affect physiological and behavioral traits of snails but no the predatory behavior of crab. This environmentally-induced decoupling of co-evolutionary predator-prey dynamics may have important consequences on the structure and stability of coastal communities and ecosystems under the influence of climate change.
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Affiliation(s)
- S Benítez
- Instituto Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile; Centro de Investigación e Innovación para el Cambio Climático (CiiCC), Facultad de Ciencias, Universidad Santo Tomás, Santiago, Chile.
| | - N A Lagos
- Centro de Investigación e Innovación para el Cambio Climático (CiiCC), Facultad de Ciencias, Universidad Santo Tomás, Santiago, Chile; Instituto Milenio en Socio-Ecología Costera, (SECOS), Santiago, Chile
| | - C Duarte
- Departamento de Ecología y Biodiversidad, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - M José Cid
- Instituto Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - J M Navarro
- Instituto Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile; Centro FONDAP de Investigación Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Universidad Austral de Chile, Valdivia, Chile
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2
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Fan X, Wang Y, Tang C, Zhang X, He J, Buttino I, Yan X, Liao Z. Metabolic profiling of Mytilus coruscus mantle in response of shell repairing under acute acidification. PLoS One 2023; 18:e0293565. [PMID: 37889901 PMCID: PMC10610157 DOI: 10.1371/journal.pone.0293565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/14/2023] [Indexed: 10/29/2023] Open
Abstract
Mytilus coruscus is an economically important marine bivalve mollusk found in the Yangtze River estuary, which experiences dramatic pH fluctuations due to seasonal freshwater input and suffer from shell fracture or injury in the natural environment. In this study, we used intact-shell and damaged-shell M. coruscus and performed metabolomic analysis, free amino acids analysis, calcium-positive staining, and intracellular calcium level tests in the mantle to investigate whether the mantle-specific metabolites can be induced by acute sea-water acidification and understand how the mantle responds to acute acidification during the shell repair process. We observed that both shell damage and acute acidification induced alterations in phospholipids, amino acids, nucleotides, organic acids, benzenoids, and their analogs and derivatives. Glycylproline, spicamycin, and 2-aminoheptanoic acid (2-AHA) are explicitly induced by shell damage. Betaine, aspartate, and oxidized glutathione are specifically induced by acute acidification. Our results show different metabolic patterns in the mussel mantle in response to different stressors, which can help elucidate the shell repair process under ocean acidification. furthermore, metabolic processes related to energy supply, cell function, signal transduction, and amino acid synthesis are disturbed by shell damage and/or acute acidification, indicating that both shell damage and acute acidification increased energy consumption, and disturb phospholipid synthesis, osmotic regulation, and redox balance. Free amino acid analysis and enzymatic activity assays partially confirmed our findings, highlighting the adaptation of M. coruscus to dramatic pH fluctuations in the Yangtze River estuary.
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Affiliation(s)
- Xiaojun Fan
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, Zhejiang, China
| | - Ying Wang
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, Zhejiang, China
| | - Changsheng Tang
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, Zhejiang, China
| | - Xiaolin Zhang
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, Zhejiang, China
| | - Jianyu He
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, Zhejiang, China
| | - Isabella Buttino
- Italian Institute for Environmental Protection and Research (ISPRA), Rome, Italy
| | - Xiaojun Yan
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, Zhejiang, China
| | - Zhi Liao
- Laboratory of Marine Biology Protein Engineering, Marine Science and Technical College, Zhejiang Ocean University, Zhoushan City, Zhejiang, China
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3
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Queirós AM, Tait K, Clark JR, Bedington M, Pascoe C, Torres R, Somerfield PJ, Smale DA. Identifying and protecting macroalgae detritus sinks toward climate change mitigation. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2023; 33:e2798. [PMID: 36504412 DOI: 10.1002/eap.2798] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 08/11/2022] [Accepted: 11/03/2022] [Indexed: 06/17/2023]
Abstract
Harnessing natural solutions to mitigate climate change requires an understanding of carbon fixation, flux, and sequestration across ocean habitats. Recent studies have suggested that exported seaweed particulate organic carbon is stored within soft-sediment systems. However, very little is known about how seaweed detritus disperses from coastlines, or where it may enter seabed carbon stores, where it could become the target of conservation efforts. Here, focusing on regionally dominant seaweed species, we surveyed environmental DNA (eDNA) from natural coastal sediments, and studied their connectivity to seaweed habitats using a particle tracking model parameterized to reproduce seaweed detritus dispersal behavior based on laboratory observations of seaweed fragment degradation and sinking. Experiments showed that seaweed detritus density changed over time, differently across species. This, in turn, modified distances traveled by released fragments until they reached the seabed for the first time, during model simulations. Dispersal pathways connected detritus from the shore to the open ocean but, importantly, also to coastal sediments, and this was reflected by field eDNA evidence. Dispersion pathways were also affected by hydrodynamic conditions, varying in space and time. Both the properties and timing of released detritus, individual to each macroalgal population, and short-term near-seabed and medium-term water-column transport pathways, are thus seemingly important in determining the connectivity between seaweed habitats and potential sedimentary sinks. Studies such as this one, supported by further field verification of sedimentary carbon sequestration rates and source partitioning, are still needed to help quantify the role of seaweed in the ocean carbon cycle. Such studies will provide vital evidence to inform on the potential need to develop blue carbon conservation mechanisms, beyond wetlands.
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Affiliation(s)
| | - Karen Tait
- Plymouth Marine Laboratory, Plymouth, UK
| | | | | | | | | | | | - Dan A Smale
- Marine Biological Association of the United Kingdom, Plymouth, UK
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4
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Ye F, Bitner MA, Shi GR. Variation of shell ornamentation with latitude and water depth-A case study using living brachiopods. Ecol Evol 2023; 13:e10006. [PMID: 37091558 PMCID: PMC10121232 DOI: 10.1002/ece3.10006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 03/13/2023] [Accepted: 03/31/2023] [Indexed: 04/25/2023] Open
Abstract
As a potential anti-predatory defensive structure, the shell ornamentation of marine calcifiers is usually used to understand the macro coevolution of the interactions between predators and preys. Marine calcifiers' shell ornamentation complexity is generally believed to vary negatively with latitude and water depth. In this paper, we explored the association between shell ornamentation and latitude/bathymetry using the latest global database of living brachiopods. We found that (1) ~59% of living brachiopods species are characterized by smooth shells and that (2) there is no statistically significant linear trend, either positive or negative, between the ornamentation index and latitudes nor with water depths. Both findings are puzzling for living brachiopods as they are sharply contrasted to the patterns of fossil brachiopods whereby the latter, especially Paleozoic brachiopods, are known to exhibit (1) a much greater ornamentation diversity and (2) (at least for the geological periods that have been studied) a linear latitudinal gradient of ornamentation complexity existed. The reasons why living brachiopods have such a high proportion of smooth or weakly ornamented shells and fail to demonstrate an unequivocal linear latitudinal ornamentation gradient were explored and are linked to a multitude of potential factors rather than uniquely only to the predation pressure. Among these, the most plausible factor seems to be the cryptic (refuge-type) habitats (e.g., deep waters, cold polar regions, and submarine rock caves) that living brachiopods have been adapted to due to their low metabolism, where predation pressure is low, allowing brachiopods to enact the predator avoidance strategy rather than having to manufacture robust shell ornamentation to survive in an otherwise highly engaged predator-prey global marine ecosystem.
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Affiliation(s)
- Facheng Ye
- School of Earth, Atmospheric and Life Sciences, Faculty of Science, Medicine and HealthUniversity of WollongongWollongongNew South WalesAustralia
| | | | - Guang Rong Shi
- School of Earth, Atmospheric and Life Sciences, Faculty of Science, Medicine and HealthUniversity of WollongongWollongongNew South WalesAustralia
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5
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Greatorex R, Knights AM. Differential effects of ocean acidification and warming on biological functioning of a predator and prey species may alter future trophic interactions. MARINE ENVIRONMENTAL RESEARCH 2023; 186:105903. [PMID: 36841179 DOI: 10.1016/j.marenvres.2023.105903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 01/19/2023] [Accepted: 01/29/2023] [Indexed: 06/18/2023]
Abstract
Independently, ocean warming (OW) and acidification (OA) from increased anthropogenic atmospheric carbon dioxide are argued to be two of the greatest threats to marine organisms. Increasingly, their interaction (ocean acidification and warming, OAW) is shown to have wide-ranging consequences to biological functioning, population and community structure, species interactions and ecosystem service provision. Here, using a multi-trophic experiment, we tested the effects of future OAW scenarios on two widespread intertidal species, the blue mussel Mytilus edulis and its predator Nucella lapillus. Results indicate negative consequences of OAW on the growth, feeding and metabolic rate of M. edulis and heightened predation risk. In contrast, Nucella growth and metabolism was unaffected and feeding increased under OAW but declined under OW suggesting OA may offset warming consequences. Should this differential response between the two species to OAW, and specifically greater physiological costs to the prey than its predator come to fruition in the nature, fundamental change in ecosystem structure and functioning could be expected as trophic interactions become disrupted.
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Affiliation(s)
- Rebecca Greatorex
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK
| | - Antony M Knights
- School of Biological and Marine Sciences, University of Plymouth, Drake Circus, Plymouth, PL4 8AA, UK.
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6
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Tills O, Holmes LA, Quinn E, Everett T, Truebano M, Spicer JI. Phenomics enables measurement of complex responses of developing animals to global environmental drivers. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:159555. [PMID: 36283519 DOI: 10.1016/j.scitotenv.2022.159555] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 09/29/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Phenomics offers technological advances for high-dimensional phenotyping, facilitating rapid, high-throughput assessment of physiological performance and has proven invaluable in global research challenges including drug discovery and food security. However, this rapidly growing discipline has remained largely inaccessible to the increasingly urgent challenge of assessing organismal functional sensitivity to global change drivers. Here, we investigate the response of an ecologically important marine invertebrate to multiple environmental drivers using Energy Proxy Traits (EPTs), a new approach for measuring complex phenotypes captured on video as a spectrum of energy levels across different temporal frequencies in fluctuating pixel values. We imaged three developmental stages of the common prawn Palaemon serratus at different salinities and temperatures, and measured EPTs and heart rate, a major proxy of physiological performance in ectotherms present across stages. Significant interactions were detected between temperature, developmental stage and salinity in frequency-specific energy levels. Despite cardiac activity being a significant contributor to the EPT spectra, treatment interactions were different from those observed on EPTs, highlighting additional phenotypic drivers of EPTs. Elevated temperature resulted in a shift of the EPT spectra towards higher frequency signals, indicating a reallocation of resources within the phenome. Using a non-linear dimensionality reduction, we interrogated the responses of EPT spectra in high-dimensional space. We discovered complex developmental-stage specific sensitivities, highlighting both the complexity of phenotypic responses, and the limits of using univariate approaches with pre-selected traits to assess responses to multiple global environmental drivers. EPTs are a high-dimensional, transferrable method of phenotyping, and are therefore highly relevant to addressing the current limitations of traditional methods of phenotyping applied to assessing biological sensitivity to drivers of global change. We predict that EPTs will become an important tool for indiscriminate phenotyping, transferrable between species, developmental stages and experimental designs.
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Affiliation(s)
- Oliver Tills
- Marine Biology and Ecology Research Centre, School of Biological and Marine Sciences, University of Plymouth, Devon PL4 8AA, United Kingdom.
| | - Luke A Holmes
- Marine Biology and Ecology Research Centre, School of Biological and Marine Sciences, University of Plymouth, Devon PL4 8AA, United Kingdom
| | - Elliot Quinn
- Marine Biology and Ecology Research Centre, School of Biological and Marine Sciences, University of Plymouth, Devon PL4 8AA, United Kingdom
| | - Tony Everett
- Marine Biology and Ecology Research Centre, School of Biological and Marine Sciences, University of Plymouth, Devon PL4 8AA, United Kingdom
| | - Manuela Truebano
- Marine Biology and Ecology Research Centre, School of Biological and Marine Sciences, University of Plymouth, Devon PL4 8AA, United Kingdom
| | - John I Spicer
- Marine Biology and Ecology Research Centre, School of Biological and Marine Sciences, University of Plymouth, Devon PL4 8AA, United Kingdom
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7
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Jarvis DM, Pope EC, Duteil M, Fürtbauer I, Brown MR, Davis RJ, King AJ. Elevated CO 2 does not alter behavioural lateralization in free-swimming juvenile European sea bass (Dicentrarchus labrax) tested in groups. JOURNAL OF FISH BIOLOGY 2022; 101:1361-1365. [PMID: 35906859 DOI: 10.1111/jfb.15180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
The authors investigated left-right turning preferences of n = 260 juvenile European sea bass (Dicentrarchus labrax) reared in ambient conditions and ocean acidification (OA) conditions or in ambient conditions but tested in OA water. Groups of 10 individuals were observed alone in a circular tank, and individuals' left and right turning during free-swimming was quantified using trajectory data from the video. The authors showed that near-future OA levels do not affect the number of turns made, or behavioural lateralization (turning preference), in juvenile D. labrax tested in groups.
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Affiliation(s)
- Dominic M Jarvis
- Department of Biosciences, College of Science, Swansea University, Swansea, UK
| | - Edward C Pope
- Department of Biosciences, College of Science, Swansea University, Swansea, UK
| | - Mathieu Duteil
- Department of Biosciences, College of Science, Swansea University, Swansea, UK
- Department of Biomedical Engineering, College of Engineering, Swansea University, Swansea, UK
- Department for the Ecology of Animal Societies, Max Planck Institute of Animal Behavior, Constance, Germany
| | - Ines Fürtbauer
- Department of Biosciences, College of Science, Swansea University, Swansea, UK
| | - M Rowan Brown
- Department of Biomedical Engineering, College of Engineering, Swansea University, Swansea, UK
| | - Richard J Davis
- Department of Biomedical Engineering, College of Engineering, Swansea University, Swansea, UK
| | - Andrew J King
- Department of Biosciences, College of Science, Swansea University, Swansea, UK
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8
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Zheng H, Tan K, Zhang H, Ma H, Li S, Zheng H. Intraspecific hybridization as a mitigation strategy of ocean acidification in marine bivalve noble scallop Chlamys nobilis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 832:154736. [PMID: 35351507 DOI: 10.1016/j.scitotenv.2022.154736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/08/2022] [Accepted: 03/17/2022] [Indexed: 06/14/2023]
Abstract
The driving factors of climate change, especially ocean acidification (OA), have many detrimental impacts on marine bivalves. Hybridization is one of the important methods to improve environmental tolerance of animals and plants. In this study, we explored the feasibility of intraspecific hybridization as an OA mitigation strategy in noble scallop Chlamys nobilis (ecologically and economically important bivalve species). The results of this study revealed that exposure of C. nobilis to OA condition significantly reduced the hatching rate, survival rate, growth rate (shell height, shell length, shell width and shell weight), and total carotenoid content (TCC), as well as increased the deformity rate of C. nobilis larvae. Interestingly, under both ambient water and OA condition, the intraspecific hybridization of C. nobilis exhibited heterosis in terms of hatching rate, survival rate and growth rate (excepted for growth in shell length under OA). Transcriptome sequencing of C. nobilis (inbreed and hybrid under ambient and OA conditions) identified four main differentially expressed genes involved in signal transduction, biological process maintenances, nucleic acid binding and post-translational modification. In addition, the expression of these four genes in hybrid C. nobilis was significantly higher than that in inbreed C. nobilis. In conclusion, hybrid C. nobilis showed heterosis in growth rate and survival rate under both ambient water and acidified seawater condition, which may be the result of enhanced expression of genes related to signal transduction, DNA replication and post-translational modification.
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Affiliation(s)
- Hongjin Zheng
- Key Laboratory of Marine Biotechnology of Guangdong Province, Institute of Marine Science, Shantou University, Shantou 515063, China; Research Center for Subtropical Mariculture Engineering Technology of Guangdong Province, Shantou 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China
| | - Karsoon Tan
- Key Laboratory of Marine Biotechnology of Guangdong Province, Institute of Marine Science, Shantou University, Shantou 515063, China; Research Center for Subtropical Mariculture Engineering Technology of Guangdong Province, Shantou 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China
| | - Hongkuan Zhang
- Key Laboratory of Marine Biotechnology of Guangdong Province, Institute of Marine Science, Shantou University, Shantou 515063, China; Research Center for Subtropical Mariculture Engineering Technology of Guangdong Province, Shantou 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China
| | - Hongyu Ma
- Key Laboratory of Marine Biotechnology of Guangdong Province, Institute of Marine Science, Shantou University, Shantou 515063, China; Research Center for Subtropical Mariculture Engineering Technology of Guangdong Province, Shantou 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China
| | - Shengkang Li
- Key Laboratory of Marine Biotechnology of Guangdong Province, Institute of Marine Science, Shantou University, Shantou 515063, China; Research Center for Subtropical Mariculture Engineering Technology of Guangdong Province, Shantou 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China
| | - Huaiping Zheng
- Key Laboratory of Marine Biotechnology of Guangdong Province, Institute of Marine Science, Shantou University, Shantou 515063, China; Research Center for Subtropical Mariculture Engineering Technology of Guangdong Province, Shantou 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China.
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Vlaminck E, Moens T, Vanaverbeke J, Van Colen C. Physiological response to seawater pH of the bivalve Abra alba, a benthic ecosystem engineer, is modulated by low pH. MARINE ENVIRONMENTAL RESEARCH 2022; 179:105704. [PMID: 35850076 DOI: 10.1016/j.marenvres.2022.105704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/23/2022] [Accepted: 07/10/2022] [Indexed: 06/15/2023]
Abstract
The presence and behaviour of bivalves can affect the functioning of seafloor sediments through the irrigation of deeper strata by feeding and respiring through siphonal channels. Here, we investigated the physiological response and consecutive impact on functioning and body condition of the white furrow shell Abra alba in three pH treatments (pH = 8.2, pH = 7.9 and pH = 7.7). Although no pH effect on survival was found, lowered respiration and calcification rates, decreased energy intake (lower absorption rate) and increased metabolic losses (increased excretion rates) occurred at pH ∼ 7.7. These physiological responses resulted in a negative Scope for Growth and a decreased condition index at this pH. This suggests that the physiological changes may not be sufficient to sustain survival in the long term, which would undoubtedly translate into consequences for ecosystem functioning.
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Affiliation(s)
- Ellen Vlaminck
- Ghent University, Biology Department, Marine Biology Lab, Krijgslaan 281/S8, 9000, Gent, Belgium.
| | - Tom Moens
- Ghent University, Biology Department, Marine Biology Lab, Krijgslaan 281/S8, 9000, Gent, Belgium
| | - Jan Vanaverbeke
- Ghent University, Biology Department, Marine Biology Lab, Krijgslaan 281/S8, 9000, Gent, Belgium; Royal Belgian Institute of Natural Sciences, Operational Directorate Natural Environment, Marine Ecology and Management, Vautierstraat 29, Brussels, 1000, Belgium
| | - Carl Van Colen
- Ghent University, Biology Department, Marine Biology Lab, Krijgslaan 281/S8, 9000, Gent, Belgium
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10
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Queirós AM, Talbot E, Beaumont NJ, Somerfield PJ, Kay S, Pascoe C, Dedman S, Fernandes JA, Jueterbock A, Miller PI, Sailley SF, Sará G, Carr LM, Austen MC, Widdicombe S, Rilov G, Levin LA, Hull SC, Walmsley SF, Nic Aonghusa C. Bright spots as climate-smart marine spatial planning tools for conservation and blue growth. GLOBAL CHANGE BIOLOGY 2021; 27:5514-5531. [PMID: 34486773 PMCID: PMC9291121 DOI: 10.1111/gcb.15827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 07/09/2021] [Accepted: 08/02/2021] [Indexed: 05/04/2023]
Abstract
Marine spatial planning that addresses ocean climate-driven change ('climate-smart MSP') is a global aspiration to support economic growth, food security and ecosystem sustainability. Ocean climate change ('CC') modelling may become a key decision-support tool for MSP, but traditional modelling analysis and communication challenges prevent their broad uptake. We employed MSP-specific ocean climate modelling analyses to inform a real-life MSP process; addressing how nature conservation and fisheries could be adapted to CC. We found that the currently planned distribution of these activities may become unsustainable during the policy's implementation due to CC, leading to a shortfall in its sustainability and blue growth targets. Significant, climate-driven ecosystem-level shifts in ocean components underpinning designated sites and fishing activity were estimated, reflecting different magnitudes of shifts in benthic versus pelagic, and inshore versus offshore habitats. Supporting adaptation, we then identified: CC refugia (areas where the ecosystem remains within the boundaries of its present state); CC hotspots (where climate drives the ecosystem towards a new state, inconsistent with each sectors' present use distribution); and for the first time, identified bright spots (areas where oceanographic processes drive range expansion opportunities that may support sustainable growth in the medium term). We thus create the means to: identify where sector-relevant ecosystem change is attributable to CC; incorporate resilient delivery of conservation and sustainable ecosystem management aims into MSP; and to harness opportunities for blue growth where they exist. Capturing CC bright spots alongside refugia within protected areas may present important opportunities to meet sustainability targets while helping support the fishing sector in a changing climate. By capitalizing on the natural distribution of climate resilience within ocean ecosystems, such climate-adaptive spatial management strategies could be seen as nature-based solutions to limit the impact of CC on ocean ecosystems and dependent blue economy sectors, paving the way for climate-smart MSP.
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Affiliation(s)
| | | | | | | | - Susan Kay
- Plymouth Marine LaboratoryPlymouthUK
| | | | - Simon Dedman
- Hopkins Marine StationStanford UniversityStanfordCaliforniaUSA
| | - Jose A. Fernandes
- AZTI‐Tecnalia, Marine ResearchBasque Research and Technology Alliance (BRTA)BizkaiaSpain
| | | | | | | | - Gianluca Sará
- Department of Earth and Marine ScienceLaboratory of EcologyUniversity of PalermoPalermoItaly
| | | | | | | | - Gil Rilov
- National Institute of OceanographyIsrael Oceanographic and Limnological Research InstituteHaifaIsrael
| | - Lisa A. Levin
- Scripps Institution of OceanographyUniversity of CaliforniaSan DiegoCaliforniaUSA
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11
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Mustapha N, Marshall DJ. Tracking coastal acidification from erosion of gastropod shells: spatial sensitivity and organism size effect. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:690. [PMID: 34601695 DOI: 10.1007/s10661-021-09479-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
The rapidly changing marine environmental chemistry associated with growing industrialisation, urban population expansion, and the unabated rise in atmospheric CO2 necessitates monitoring. Traditional approaches using metres, dataloggers, and buoys to monitor marine acidification have limited application in coastal oceans and intertidal zones subjected to direct wave action. The present study trialled a system to biomonitor coastal acidification (carbonate ion and pH) based on the dissolution of living gastropod shells. We extended on an approach that ranked shell erosion (SER) in Nerita chamaeleon (Nc) in environments where such erosion was found to correlate with exposure to acidified water. We assessed the spatial scale at which the Nc-SER marker could detect change in acidification along rocky shores, and whether snail body size affected this marker. We found that proportional and unique Nc-SERs not only varied between acidified and non-acidified reference shores at a coarse spatial scale (10 km), but also in predictable ways at fine scales (metres), vertically and horizontally within a shore. Differences between acidified and reference shores in the relationship for snail size and Nc-SER were accentuated by less weathered shells at reference localities, highlighting the value of including small, juvenile snails in monitoring protocols. Gastropod shells are shown to be useful for assessing point sources of acidification and the spatial area of affected coastal zones. This cost-effective and easy-to-use approach (potentially even by citizen-scientists) offers an early warning system of acidification of rocky shore ecosystems, where the deployment of instruments is precluded.
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Affiliation(s)
- Nurshahida Mustapha
- Environmental and Life Sciences, Faculty of Science, Jalan Tungku Link, Universiti Brunei Darussalam, Gadong, Brunei Darussalam
| | - David J Marshall
- Environmental and Life Sciences, Faculty of Science, Jalan Tungku Link, Universiti Brunei Darussalam, Gadong, Brunei Darussalam.
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Thomas JT, Spady BL, Munday PL, Watson SA. The role of ligand-gated chloride channels in behavioural alterations at elevated CO2 in a cephalopod. J Exp Biol 2021; 224:269059. [PMID: 34100547 DOI: 10.1242/jeb.242335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 05/30/2021] [Indexed: 11/20/2022]
Abstract
Projected future carbon dioxide (CO2) levels in the ocean can alter marine animal behaviours. Disrupted functioning of γ-aminobutyric acid type A (GABAA) receptors (ligand-gated chloride channels) is suggested to underlie CO2-induced behavioural changes in fish. However, the mechanisms underlying behavioural changes in marine invertebrates are poorly understood. We pharmacologically tested the role of GABA-, glutamate-, acetylcholine- and dopamine-gated chloride channels in CO2-induced behavioural changes in a cephalopod, the two-toned pygmy squid (Idiosepius pygmaeus). We exposed squid to ambient (∼450 µatm) or elevated (∼1000 µatm) CO2 for 7 days. Squid were treated with sham, the GABAA receptor antagonist gabazine or the non-specific GABAA receptor antagonist picrotoxin, before measurement of conspecific-directed behaviours and activity levels upon mirror exposure. Elevated CO2 increased conspecific-directed attraction and aggression, as well as activity levels. For some CO2-affected behaviours, both gabazine and picrotoxin had a different effect at elevated compared with ambient CO2, providing robust support for the GABA hypothesis within cephalopods. In another behavioural trait, picrotoxin but not gabazine had a different effect in elevated compared with ambient CO2, providing the first pharmacological evidence, in fish and marine invertebrates, for altered functioning of ligand-gated chloride channels, other than the GABAAR, underlying CO2-induced behavioural changes. For some other behaviours, both gabazine and picrotoxin had a similar effect in elevated and ambient CO2, suggesting altered function of ligand-gated chloride channels was not responsible for these CO2-induced changes. Multiple mechanisms may be involved, which could explain the variability in the CO2 and drug treatment effects across behaviours.
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Affiliation(s)
- Jodi T Thomas
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia
| | - Blake L Spady
- Coral Reef Watch, National Oceanic and Atmospheric Administration, College Park, MD 20740, USA.,ReefSense Pty Ltd., Cranbrook, QLD 4814, Australia
| | - Philip L Munday
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia
| | - Sue-Ann Watson
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, QLD 4811, Australia.,Biodiversity and Geosciences Program, Museum of Tropical Queensland, Queensland Museum Network, Townsville, QLD 4810, Australia
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13
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Barclay KM, Gingras MK, Packer ST, Leighton LR. The role of gastropod shell composition and microstructure in resisting dissolution caused by ocean acidification. MARINE ENVIRONMENTAL RESEARCH 2020; 162:105105. [PMID: 32841915 DOI: 10.1016/j.marenvres.2020.105105] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 07/02/2020] [Accepted: 08/04/2020] [Indexed: 06/11/2023]
Abstract
Organisms, such as molluscs, that produce their hard parts from calcium carbonate are expected to show increased difficulties growing and maintaining their skeletons under ocean acidification (OA). Any loss of shell integrity increases vulnerability, as shells provide protection against predation, desiccation, and disease. Not all species show the same responses to OA, which may be due to the composition and microstructural arrangement of their shells. We explore the role of shell composition and microstructure in resisting dissolution caused by decreases in seawater pH using a combination of microCT scans, XRD analysis, and SEM imaging. Two gastropods with different shell compositions and microstructure, Tegula funebralis and Nucella ostrina, were exposed to simulated ocean acidification conditions for six months. Both species showed signs of dissolution on the exterior of their shells, but changes in density were significantly more pronounced in T. funebralis. XRD analysis indicated that the exterior layer of both shell types was made of calcite. T. funebralis may be more prone to dissolution because their outer fibrous calcite layer has more crystal edges and faces exposed, potentially increasing the surface area on which dissolution can occur. These results support a previous study where T. funebralis showed significant decreases in both shell growth and strength, but N. ostrina only showed slight reductions in shell strength, and unaffected growth. We suggest that microstructural arrangement of shell layers in molluscs, more so than their composition alone, is critical for determining the vulnerability of mollusc shells to OA.
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Affiliation(s)
- Kristina M Barclay
- Earth and Atmospheric Sciences Department, University of Alberta, 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada.
| | - Murray K Gingras
- Earth and Atmospheric Sciences Department, University of Alberta, 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada
| | - Stephen T Packer
- Earth and Atmospheric Sciences Department, University of Alberta, 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada
| | - Lindsey R Leighton
- Earth and Atmospheric Sciences Department, University of Alberta, 1-26 Earth Sciences Building, University of Alberta, Edmonton, AB, T6G 2E3, Canada
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14
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Marčeta T, Matozzo V, Alban S, Badocco D, Pastore P, Marin MG. Do males and females respond differently to ocean acidification? An experimental study with the sea urchin Paracentrotus lividus. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:39516-39530. [PMID: 32651777 PMCID: PMC7524842 DOI: 10.1007/s11356-020-10040-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 07/06/2020] [Indexed: 05/02/2023]
Abstract
Seawater pH lowering, known as ocean acidification, is considered among the major threats to marine environment. In this study, post-spawning adults of the sea urchin Paracentrotus lividus were maintained at three pH values (8.0, 7.7, 7.4) for 60 days. Physiological, biochemical, cellular, behavioural and reproductive responses were evaluated in males and females. Significant differences between sexes were observed, with higher ammonia excretion and lower catalase activity in males. Respiration rate (after 21 days), catalase activity in gonads and total coelomocyte count showed the same increasing trend in males and females under low pH. Ammonia excretion, gonadosomatic index and lysozyme activity exhibited opposite responses to low pH, with an increasing trend in males and decreasing in females. Results demonstrated that exposure to low pH could result in different response strategies of male and female sea urchins at a physiological, biochemical and immunological level. Reduced female gonadosomatic index under low pH suggested decreased energy investment in reproduction.
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Affiliation(s)
- Tihana Marčeta
- Department of Biology, University of Padova, via Ugo Bassi 58/B, 35131, Padova, Italy
- Institute of Marine Sciences (ISMAR), CNR, Venezia, Italy
| | - Valerio Matozzo
- Department of Biology, University of Padova, via Ugo Bassi 58/B, 35131, Padova, Italy
| | - Silvia Alban
- Department of Biology, University of Padova, via Ugo Bassi 58/B, 35131, Padova, Italy
| | - Denis Badocco
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131, Padova, Italy
| | - Paolo Pastore
- Department of Chemical Sciences, University of Padova, Via Marzolo 1, 35131, Padova, Italy
| | - Maria Gabriella Marin
- Department of Biology, University of Padova, via Ugo Bassi 58/B, 35131, Padova, Italy.
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15
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Fernandes JA, Rutterford L, Simpson SD, Butenschön M, Frölicher TL, Yool A, Cheung WWL, Grant A. Can we project changes in fish abundance and distribution in response to climate? GLOBAL CHANGE BIOLOGY 2020; 26:3891-3905. [PMID: 32378286 DOI: 10.1111/gcb.15081] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2019] [Revised: 02/05/2020] [Accepted: 02/23/2020] [Indexed: 06/11/2023]
Abstract
Large-scale and long-term changes in fish abundance and distribution in response to climate change have been simulated using both statistical and process-based models. However, national and regional fisheries management requires also shorter term projections on smaller spatial scales, and these need to be validated against fisheries data. A 26-year time series of fish surveys with high spatial resolution in the North-East Atlantic provides a unique opportunity to assess the ability of models to correctly simulate the changes in fish distribution and abundance that occurred in response to climate variability and change. We use a dynamic bioclimate envelope model forced by physical-biogeochemical output from eight ocean models to simulate changes in fish abundance and distribution at scales down to a spatial resolution of 0.5°. When comparing with these simulations with annual fish survey data, we found the largest differences at the 0.5° scale. Differences between fishery model runs driven by different biogeochemical models decrease dramatically when results are aggregated to larger scales (e.g. the whole North Sea), to total catches rather than individual species or when the ensemble mean instead of individual simulations are used. Recent improvements in the fidelity of biogeochemical models translate into lower error rates in the fisheries simulations. However, predictions based on different biogeochemical models are often more similar to each other than they are to the survey data, except for some pelagic species. We conclude that model results can be used to guide fisheries management at larger spatial scales, but more caution is needed at smaller scales.
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Affiliation(s)
- Jose A Fernandes
- AZTI, Marine Research, Basque Research and Technology Alliance (BRTA), Pasaia, Spain
- Plymouth Marine Laboratory, Plymouth, UK
| | - Louise Rutterford
- Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
- School of Biological Sciences, Life Sciences Building, University of Bristol, Bristol, UK
| | - Stephen D Simpson
- School of Biological Sciences, Life Sciences Building, University of Bristol, Bristol, UK
| | - Momme Butenschön
- Plymouth Marine Laboratory, Plymouth, UK
- Ocean Modeling and Data Assimilation Division, Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
| | - Thomas L Frölicher
- Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland
- Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland
| | - Andrew Yool
- National Oceanography Centre, Southampton, UK
| | - William W L Cheung
- Nippon Foundation-Nereus Program, Institute for the Oceans and Fisheries, The University of British Columbia, Vancouver, BC, Canada
| | - Alastair Grant
- Ocean Modeling and Data Assimilation Division, Centro Euro-Mediterraneo sui Cambiamenti Climatici, Bologna, Italy
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16
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Oliveira IB, Freitas DB, Fonseca JG, Laranjeiro F, Rocha RJM, Hinzmann M, Machado J, Barroso CM, Galante-Oliveira S. Vulnerability of Tritia reticulata (L.) early life stages to ocean acidification and warming. Sci Rep 2020; 10:5325. [PMID: 32210337 PMCID: PMC7093509 DOI: 10.1038/s41598-020-62169-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 03/02/2020] [Indexed: 11/09/2022] Open
Abstract
Ocean acidification and warming (OA-W) result mainly from the absorption of carbon dioxide and heat by the oceans, altering its physical and chemical properties and affecting carbonate secretion by marine calcifiers such as gastropods. These processes are ongoing, and the projections of their aggravation are not encouraging. This work assesses the concomitant effect of the predicted pH decrease and temperature rise on early life stages of the neogastropod Tritia reticulata (L.), a common scavenger of high ecological importance on coastal ecosystems of the NE Atlantic. Veligers were exposed for 14 days to 12 OA-W experimental scenarios generated by a factorial design of three pH levels (targeting 8.1, 7.8 and 7.5) at four temperatures (16, 18, 20 and 22 °C). Results reveal effects of both pH and temperature (T °C) on larval development, growth, shell integrity and survival, individually or interactively at different exposure times. All endpoints were initially driven by pH, with impaired development and high mortalities being recorded in the first week, constrained by the most acidic scenarios (pHtarget 7.5). Development was also significantly driven by T °C, and its acceleration with warming was observed for the remaining exposure time. Still, by the end of this 2-weeks trial, larval performance and survival were highly affected by the interaction between pH and T °C: growth under warming was evident but only for T °C ≤ 20 °C and carbonate saturation (pHtarget ≥ 7.8). In fact, carbonate undersaturation rendered critical larval mortality (100%) at 22 °C, and the occurrence of extremely vulnerable, unshelled specimens in all other tested temperatures. As recruitment cohorts are the foundation for future populations, our results point towards the extreme vulnerability of this species in case tested scenarios become effective that, according to the IPCC, are projected for the northern hemisphere, where this species is ubiquitous, by the end of the century. Increased veliger mortality associated with reduced growth rates, shell dissolution and loss under OA-W projected scenarios will reduce larval performance, jeopardizing T. reticulata subsistence.
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Affiliation(s)
- Isabel B Oliveira
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Daniela B Freitas
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Joana G Fonseca
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Filipe Laranjeiro
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Rui J M Rocha
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Mariana Hinzmann
- CIIMAR - Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros de Leixões, Av. General Norton de Matos s/n, 4450-208, Matosinhos, Portugal
| | - Jorge Machado
- Laboratory of Applied Physiology, ICBAS, University of Porto, Rua de Jorge Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Carlos M Barroso
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Susana Galante-Oliveira
- CESAM, Department of Biology, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal.
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17
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Weinnig AM, Gómez CE, Hallaj A, Cordes EE. Cold-water coral (Lophelia pertusa) response to multiple stressors: High temperature affects recovery from short-term pollution exposure. Sci Rep 2020; 10:1768. [PMID: 32019964 PMCID: PMC7000676 DOI: 10.1038/s41598-020-58556-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 01/16/2020] [Indexed: 11/15/2022] Open
Abstract
There are numerous studies highlighting the impacts of direct and indirect stressors on marine organisms, and multi-stressor studies of their combined effects are an increasing focus of experimental work. Lophelia pertusa is a framework-forming cold-water coral that supports numerous ecosystem services in the deep ocean. These corals are threatened by increasing anthropogenic impacts to the deep-sea, such as global ocean change and hydrocarbon extraction. This study implemented two sets of experiments to assess the effects of future conditions (temperature: 8 °C and 12 °C, pH: 7.9 and 7.6) and hydrocarbon exposure (oil, dispersant, oil + dispersant combined) on coral health. Phenotypic response was assessed through three independent observations of diagnostic characteristics that were combined into an average health rating at four points during exposure and recovery. In both experiments, regardless of environmental condition, average health significantly declined during 24-hour exposure to dispersant alone but was not significantly altered in the other treatments. In the early recovery stage (24 hours), polyp health returned to the pre-exposure health state under ambient temperature in all treatments. However, increased temperature resulted in a delay in recovery (72 hours) from dispersant exposure. These experiments provide evidence that global ocean change can affect the resilience of corals to environmental stressors and that exposure to chemical dispersants may pose a greater threat than oil itself.
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Affiliation(s)
- Alexis M Weinnig
- Department of Biology, Temple University, Philadelphia, Pennsylvania, USA.
| | - Carlos E Gómez
- Department of Biology, Temple University, Philadelphia, Pennsylvania, USA
- Departamento de Ciencias Biológicas, Universidad de los Andes, Bogotá, D.C., Colombia
| | - Adam Hallaj
- Department of Biology, Temple University, Philadelphia, Pennsylvania, USA
| | - Erik E Cordes
- Department of Biology, Temple University, Philadelphia, Pennsylvania, USA
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18
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Alma L, Kram KE, Holtgrieve GW, Barbarino A, Fiamengo CJ, Padilla-Gamiño JL. Ocean acidification and warming effects on the physiology, skeletal properties, and microbiome of the purple-hinge rock scallop. Comp Biochem Physiol A Mol Integr Physiol 2020; 240:110579. [DOI: 10.1016/j.cbpa.2019.110579] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 09/05/2019] [Accepted: 09/11/2019] [Indexed: 12/13/2022]
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19
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Tan K, Zheng H. Ocean acidification and adaptive bivalve farming. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 701:134794. [PMID: 31715479 DOI: 10.1016/j.scitotenv.2019.134794] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/30/2019] [Accepted: 10/01/2019] [Indexed: 06/10/2023]
Abstract
Multiple lines of evidence, ranging from time series field observations to climate change stimulation experiments demonstrate the negative effects of global warming and ocean acidification (OA) on bivalve molluscs. The impact of global warming on bivalve aquaculture has recently been reviewed. However, the impact of OA on bivalve aquaculture has received relatively less attention. Although there are many reports on the effects of OA on bivalves, this information is poorly organized and the connection between OA and bivalve aquaculture is unclear. Therefore, understanding the potential impact of acidification on ecosystems and bivalve aquaculture is of prime importance. Here, we provide a comprehensive scientific review of the impact of OA on bivalves and propose mitigation measures for future bivalve farming. This information will help to establish aquaculture and fisheries management plans to be implemented in commercial fisheries and nature conservation. In general, scientific evidence suggests that OA threatens bivalves by diminishing the availability of carbonate minerals, which may adversely affect the development of early life stages, calcification, growth, byssus attachment and survival of bivalves. The Integrated multi-trophic aquaculture (IMTA) approach is a useful method in slowing the effects of climate change, thereby providing longer adaptation period for bivalves to changing ocean conditions. However, for certain regions that experience intense OA effects or for certain bivalve species that have much longer generational time, IMTA alone may not be sufficient to protect bivalves from the adverse effects of climate change. Therefore, it is highly recommended to combine IMTA and genetic breeding methods to facilitate transgenerational acclimation or evolution processes to enhance the climate resilience of bivalves.
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Affiliation(s)
- Karsoon Tan
- Key Laboratory of Marine Biotechnology of Guangdong Province, Shantou University, Shantou 515063, China; Mariculture Research Center for Subtropical Shellfish & Algae of Guangdong Province, Shantou 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China
| | - Huaiping Zheng
- Key Laboratory of Marine Biotechnology of Guangdong Province, Shantou University, Shantou 515063, China; Mariculture Research Center for Subtropical Shellfish & Algae of Guangdong Province, Shantou 515063, China; STU-UMT Joint Shellfish Research Laboratory, Shantou University, Shantou 515063, China.
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20
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Contolini GM, Reid K, Palkovacs EP. Climate shapes population variation in dogwhelk predation on foundational mussels. Oecologia 2020; 192:553-564. [PMID: 31932922 DOI: 10.1007/s00442-019-04591-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 12/30/2019] [Indexed: 11/25/2022]
Abstract
Trait variation among populations is important for shaping ecological dynamics. In marine intertidal systems, seawater temperature, low tide emersion temperature, and pH can drive variation in traits and affect species interactions. In western North America, Nucella dogwhelks are intertidal drilling predators of the habitat-forming mussel Mytilus californianus. Nucella exhibit local adaptation, but it is not known to what extent environmental factors and genetic structure contribute to variation in prey selectivity among populations. We surveyed drilled mussels at sites across Oregon and California, USA, and used multiple regression and Mantel tests to test the effects of abiotic factors and Nucella neutral genetic relatedness on the size of mussels drilled across sites. Our results show that Nucella at sites characterized by higher and less variable temperature and pH drilled larger mussels. Warmer temperatures appear to induce faster handling time, and more stable pH conditions may prolong opportunities for active foraging by reducing exposure to repeated stressful conditions. In contrast, there was no significant effect of genetic relatedness on prey size selectivity. Our results emphasize the role of climate in shaping marine predator selectivity on a foundation species. As coastal climates change, predator traits will respond to localized environmental conditions, changing ecological interactions.
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Affiliation(s)
- Gina M Contolini
- Department of Ecology and Evolutionary Biology, University of California Santa Cruz, 130 McAllister Way, Santa Cruz, CA, 95060, USA.
| | - Kerry Reid
- Department of Ecology and Evolutionary Biology, University of California Santa Cruz, 130 McAllister Way, Santa Cruz, CA, 95060, USA
| | - Eric P Palkovacs
- Department of Ecology and Evolutionary Biology, University of California Santa Cruz, 130 McAllister Way, Santa Cruz, CA, 95060, USA
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21
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McCoy SJ, Widdicombe S. Thermal plasticity is independent of environmental history in an intertidal seaweed. Ecol Evol 2019; 9:13402-13412. [PMID: 31871653 PMCID: PMC6912923 DOI: 10.1002/ece3.5796] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 09/17/2019] [Accepted: 09/27/2019] [Indexed: 01/20/2023] Open
Abstract
Organisms inhabiting the intertidal zone have been used to study natural ecophysiological responses and adaptations to thermal stress because these organisms are routinely exposed to high-temperature conditions for hours at a time. While intertidal organisms may be inherently better at withstanding temperature stress due to regular exposure and acclimation, they could be more vulnerable to temperature stress, already living near the edge of their thermal limits. Strong gradients in thermal stress across the intertidal zone present an opportunity to test whether thermal tolerance is a plastic or canalized trait in intertidal organisms. Here, we studied the intertidal pool-dwelling calcified alga, Ellisolandia elongata, under near-future temperature regimes, and the dependence of its thermal acclimatization response on environmental history. Two timescales of environmental history were tested during this experiment. The intertidal pool of origin was representative of long-term environmental history over the alga's life (including settlement and development), while the pool it was transplanted into accounted for recent environmental history (acclimation over many months). Unexpectedly, neither long-term nor short-term environmental history, nor ambient conditions, affected photosynthetic rates in E. elongata. Individuals were plastic in their photosynthetic response to laboratory temperature treatments (mean 13.2°C, 15.7°C, and 17.7°C). Further, replicate ramets from the same individual were not always consistent in their photosynthetic performance from one experimental time point to another or between treatments and exhibited no clear trend in variability over experimental time. High variability in climate change responses between individuals may indicate the potential for resilience to future conditions and, thus, may play a compensatory role at the population or species level over time.
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Affiliation(s)
- Sophie J. McCoy
- Department of Biological ScienceFlorida State UniversityTallahasseeFLUSA
- Plymouth Marine LaboratoryPlymouthUK
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22
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Ravaglioli C, Bulleri F, Rühl S, McCoy SJ, Findlay HS, Widdicombe S, Queirós AM. Ocean acidification and hypoxia alter organic carbon fluxes in marine soft sediments. GLOBAL CHANGE BIOLOGY 2019; 25:4165-4178. [PMID: 31535452 DOI: 10.1111/gcb.14806] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 07/26/2019] [Accepted: 07/27/2019] [Indexed: 06/10/2023]
Abstract
Anthropogenic stressors can alter the structure and functioning of infaunal communities, which are key drivers of the carbon cycle in marine soft sediments. Nonetheless, the compounded effects of anthropogenic stressors on carbon fluxes in soft benthic systems remain largely unknown. Here, we investigated the cumulative effects of ocean acidification (OA) and hypoxia on the organic carbon fate in marine sediments, through a mesocosm experiment. Isotopically labelled macroalgal detritus (13 C) was used as a tracer to assess carbon incorporation in faunal tissue and in sediments under different experimental conditions. In addition, labelled macroalgae (13 C), previously exposed to elevated CO2 , were also used to assess the organic carbon uptake by fauna and sediments, when both sources and consumers were exposed to elevated CO2 . At elevated CO2 , infauna increased the uptake of carbon, likely as compensatory response to the higher energetic costs faced under adverse environmental conditions. By contrast, there was no increase in carbon uptake by fauna exposed to both stressors in combination, indicating that even a short-term hypoxic event may weaken the ability of marine invertebrates to withstand elevated CO2 conditions. In addition, both hypoxia and elevated CO2 increased organic carbon burial in the sediment, potentially affecting sediment biogeochemical processes. Since hypoxia and OA are predicted to increase in the face of climate change, our results suggest that local reduction of hypoxic events may mitigate the impacts of global climate change on marine soft-sediment systems.
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Affiliation(s)
| | - Fabio Bulleri
- Dipartimento di Biologia, Università di Pisa, CoNISMa, Pisa, Italy
| | - Saskia Rühl
- Plymouth Marine Laboratory, Plymouth, UK
- Southampton University, Southampton, UK
| | - Sophie J McCoy
- Department of Biological Sciences, Florida State University, Tallahassee, FL, USA
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23
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Clapham ME. Conservation evidence from climate-related stressors in the deep-time marine fossil record. Philos Trans R Soc Lond B Biol Sci 2019; 374:20190223. [PMID: 31679494 DOI: 10.1098/rstb.2019.0223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Conservation of marine species requires the ability to predict the effects of climate-related stressors in an uncertain future. Experiments and observations in modern settings provide crucial information, but lack temporal scale and cannot anticipate emergent effects during ongoing global change. By contrast, the deep-time fossil record contains the long-term perspective at multiple global change events that can be used, at a broad scale, to test hypothesized effects of climate-related stressors. For example, geologically rapid carbon cycle disruption has often caused crises in reef ecosystems, and selective extinctions support the hypothesis that greater activity levels promote survival. Geographical patterns of extinction and extirpation were more variable than predicted from modern physiology, with tropical and temperate extinction peaks observed at different ancient events. Like any data source, the deep-time record has limitations but also provides opportunities that complement the limitations of modern and historical data. In particular, the deep-time record is the best source of information on actual outcomes of climate-related stressors in natural settings and over evolutionary timescales. Closer integration of modern and deep-time evidence can expand the types of hypotheses testable with the fossil record, yielding better predictions of extinction risk as climate-related stressors continue to intensify in future oceans. This article is part of a discussion meeting issue 'The past is a foreign country: how much can the fossil record actually inform conservation?'
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Affiliation(s)
- Matthew E Clapham
- Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, CA 95064, USA
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24
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Complex and interactive effects of ocean acidification and warming on the life span of a marine trematode parasite. Int J Parasitol 2019; 49:1015-1021. [PMID: 31655036 DOI: 10.1016/j.ijpara.2019.07.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 06/29/2019] [Accepted: 07/03/2019] [Indexed: 11/21/2022]
Abstract
Human activities have caused an increase in atmospheric CO2 over the last 250 years, leading to unprecedented rates of change in seawater pH and temperature. These global scale processes are now commonly referred to as ocean acidification and warming, and have the potential to substantially alter the physiological performance of many marine organisms. It is vital that the effects of ocean acidification and warming on marine organisms are explored so that we can predict how marine communities may change in future. In particular, the effect of ocean acidification and warming on host-parasite dynamics is poorly understood, despite the ecological importance of these relationships. Here, we explore the response of one himasthlid trematode, Himasthla sp., an abundant and broadly distributed species of marine parasite, to combinations of elevated temperature and pCO2 that represent physiological extremes, pre-industrial conditions, and end of century predictions. Specifically, we quantified the life span of the free-living cercarial stage under elevated temperature and pCO2, focussing our research on functional life span (the time cercariae spend actively swimming) and absolute life span (the period before death). We found that the effects of temperature and pCO2 were complex and interactive. Overall, increased temperature negatively affected functional and absolute life span, e.g. across all pCO2 treatments the average time to 50% cessation of active swimming was approximately 8 h at 5 °C, 6 h at 15 °C, 4 h at 25 °C, and 2 h at 40 °C. The effect of pCO2, which significantly affected absolute life span, was highly variable across temperature treatments. These results strongly suggest that ocean acidification and warming may alter the transmission success of trematode cercariae, and potentially reduce the input of cercariae to marine zooplankton. Either outcome could substantially alter the community structure of coastal marine systems.
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Lee YH, Kang HM, Kim MS, Wang M, Kim JH, Jeong CB, Lee JS. Effects of ocean acidification on life parameters and antioxidant system in the marine copepod Tigriopus japonicus. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2019; 212:186-193. [PMID: 31129414 DOI: 10.1016/j.aquatox.2019.05.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/12/2019] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
Ocean acidification (OA) is caused by alteration of global ocean carbon chemistry due to the increased pCO2 in the atmosphere and caused deleterious impacts on the marine ecosystem. Although various detrimental effects of OA were reported in marine organisms, the potential impact of OA on aquatic invertebrates still remains largely unknown. Here, we examined changes in life parameters and antioxidant system in response to low pH (7.5 and 7) in the marine copepod Tigriopus japonicus. Exposures to lower pHs (pH 7.5 and 7.0) of copepods resulted in lengthening of the developmental time with decreased fecundity and body length. Also, they showed increased reactive oxygen species contents with enhanced glutathione S-transferase and glutathione reductase activities but decreased glutathione peroxidase and superoxide dismutase activities in pH-dependent manner, indicating that OA exposure caused disturbance of the redox system in T. japonicus. Among several oxidative stress-related genes, GSTs2b was significantly up-regulated in response to OA. These findings will be helpful for a better understanding on the potential impact of OA on life parameters and antioxidant system in the marine copepod T. japonicus.
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Affiliation(s)
- Young Hwan Lee
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Hye-Min Kang
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Min-Sub Kim
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Minghua Wang
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems/College of the Environment & Ecology, Xiamen University, Xiamen, 361102, China
| | - Jeong Ha Kim
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon, 16419, South Korea
| | - Chang-Bum Jeong
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon, 16419, South Korea.
| | - Jae-Seong Lee
- Department of Biological Science, College of Science, Sungkyunkwan University, Suwon, 16419, South Korea.
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Queirós AM, Stephens N, Widdicombe S, Tait K, McCoy SJ, Ingels J, Rühl S, Airs R, Beesley A, Carnovale G, Cazenave P, Dashfield S, Hua E, Jones M, Lindeque P, McNeill CL, Nunes J, Parry H, Pascoe C, Widdicombe C, Smyth T, Atkinson A, Krause‐Jensen D, Somerfield PJ. Connected macroalgal‐sediment systems: blue carbon and food webs in the deep coastal ocean. ECOL MONOGR 2019. [DOI: 10.1002/ecm.1366] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Nicholas Stephens
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
- Nereis Bioengineering Llansadwrn SA19 8NA United Kingdom
| | | | - Karen Tait
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
| | - Sophie J. McCoy
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
- Department of Biological Science Florida State University Tallahassee Florida 32306 USA
| | - Jeroen Ingels
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
- Coastal and Marine Laboratory Florida State University St Teresa Florida 32358 USA
| | - Saskia Rühl
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
| | - Ruth Airs
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
| | - Amanda Beesley
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
| | | | | | | | - Er Hua
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
- Ocean University of China Qingdao 266003 China
| | - Mark Jones
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
| | | | | | - Joana Nunes
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
| | - Helen Parry
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
| | | | | | - Tim Smyth
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
| | - Angus Atkinson
- Plymouth Marine Laboratory Plymouth PL1 3DH United Kingdom
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Cross EL, Harper EM, Peck LS. Thicker Shells Compensate Extensive Dissolution in Brachiopods under Future Ocean Acidification. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:5016-5026. [PMID: 30925214 DOI: 10.1021/acs.est.9b00714] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Organisms with long generation times require phenotypic plasticity to survive in changing environments until genetic adaptation can be achieved. Marine calcifiers are particularly vulnerable to ocean acidification due to dissolution and a reduction in shell-building carbonate ions. Long-term experiments assess organisms' abilities to acclimatize or even adapt to environmental change. Here we present an unexpected compensatory response to extensive shell dissolution in a highly calcium-carbonate-dependent organism after long-term culture in predicted end-century acidification and warming conditions. Substantial shell dissolution with decreasing pH posed a threat to both a polar ( Liothyrella uva) and a temperate ( Calloria inconspicua) brachiopod after 7 months and 3 months exposure, respectively, with more extensive dissolution in the polar species. This impact was reflected in decreased outer primary layer thickness in the polar brachiopod. A compensatory response of increasing inner secondary layer thickness, and thereby producing a thicker shell, was exhibited by the polar species. Less extensive dissolution in the temperate brachiopod did not affect shell thickness. Increased temperature did not impact shell dissolution or thickness. Brachiopod ability to produce a thicker shell when extensive shell dissolution occurs suggests this marine calcifier has great plasticity in calcification providing insights into how similar species might cope under future environmental change.
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Affiliation(s)
- Emma L Cross
- Department of Earth Sciences , University of Cambridge , Downing Street , Cambridge , CB2 3EQ , United Kingdom
- British Antarctic Survey , Natural Environment Research Council , High Cross, Madingley Road , Cambridge , CB3 0ET , United Kingdom
| | - Elizabeth M Harper
- Department of Earth Sciences , University of Cambridge , Downing Street , Cambridge , CB2 3EQ , United Kingdom
| | - Lloyd S Peck
- British Antarctic Survey , Natural Environment Research Council , High Cross, Madingley Road , Cambridge , CB3 0ET , United Kingdom
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28
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Draper AM, Weissburg MJ. Impacts of Global Warming and Elevated CO2 on Sensory Behavior in Predator-Prey Interactions: A Review and Synthesis. Front Ecol Evol 2019. [DOI: 10.3389/fevo.2019.00072] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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29
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Hunter WR, Ogle N, O’Connor N. Warming affects predatory faunal impacts upon microbial carbon cycling. Funct Ecol 2019. [DOI: 10.1111/1365-2435.13304] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- William Ross Hunter
- Queen’s University Marine Laboratory, School of Biological Sciences Queen's University of Belfast Portaferry UK
| | - Neil Ogle
- Queen’s University Stable Isotope Facility, School of Natural and Built Environment Queen's University of Belfast Belfast UK
| | - Nessa O’Connor
- Queen’s University Marine Laboratory, School of Biological Sciences Queen's University of Belfast Portaferry UK
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Hodgson EE, Halpern BS. Investigating cumulative effects across ecological scales. CONSERVATION BIOLOGY : THE JOURNAL OF THE SOCIETY FOR CONSERVATION BIOLOGY 2019; 33:22-32. [PMID: 29722069 DOI: 10.1111/cobi.13125] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 03/29/2018] [Accepted: 04/20/2018] [Indexed: 06/08/2023]
Abstract
Species, habitats, and ecosystems are increasingly exposed to multiple anthropogenic stressors, fueling a rapidly expanding research program to understand the cumulative impacts of these environmental modifications. Since the 1970s, a growing set of methods has been developed through two parallel, sometimes connected, streams of research within the applied and academic realms to assess cumulative effects. Past reviews of cumulative effects assessment (CEA) methods focused on approaches used by practitioners. Academic research has developed several distinct and novel approaches to conducting CEA. Understanding the suite of methods that exist will help practitioners and academics better address various ecological foci (physiological responses, population impacts, ecosystem impacts) and ecological complexities (synergistic effects, impacts across space and time). We reviewed 6 categories of methods (experimental, meta-analysis, single-species modeling, mapping, qualitative modeling, and multispecies modeling) and examined the ability of those methods to address different levels of complexity. We focused on research gaps and emerging priorities. We found that no single method assessed impacts across the 4 ecological foci and 6 ecological complexities considered. We propose that methods can be used in combination to improve understanding such that multimodel inference can provide a suite of comparable outputs, mapping methods can help prioritize localized models or experimental gaps, and future experiments can be paired from the outset with models they will inform.
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Affiliation(s)
- Emma E Hodgson
- Department of Biological Sciences, Simon Fraser University, 8888 University Way, Burnaby, BC, V5A 1S6, Canada
- School of Aquatic and Fishery Sciences, University of Washington, Box 355020, Seattle, WA 98195, U.S.A
| | - Benjamin S Halpern
- National Center for Ecological Analysis and Synthesis, University of California, 735 State Street #300, Santa Barbara, CA 93101, U.S.A
- Bren School of Environmental Science and Management, University of California, Santa Barbara, Santa Barbara, CA 93106, U.S.A
- Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, SL57PY, U.K
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Holmberg RJ, Wilcox-Freeburg E, Rhyne AL, Tlusty MF, Stebbins A, Nye Jr. SW, Honig A, Johnston AE, San Antonio CM, Bourque B, Hannigan RE. Ocean acidification alters morphology of all otolith types in Clark's anemonefish ( Amphiprion clarkii). PeerJ 2019; 7:e6152. [PMID: 30643693 PMCID: PMC6327886 DOI: 10.7717/peerj.6152] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 11/23/2018] [Indexed: 11/20/2022] Open
Abstract
Ocean acidification, the ongoing decline of surface ocean pH and [CO3 2 - ] due to absorption of surplus atmospheric CO2, has far-reaching consequences for marine biota, especially calcifiers. Among these are teleost fishes, which internally calcify otoliths, critical elements of the inner ear and vestibular system. There is evidence in the literature that ocean acidification increases otolith size and alters shape, perhaps impacting otic mechanics and thus sensory perception. Here, larval Clark's anemonefish, Amphiprion clarkii (Bennett, 1830), were reared in various seawater pCO2/pH treatments analogous to future ocean scenarios. At the onset of metamorphosis, all otoliths were removed from each individual fish and analyzed for treatment effects on morphometrics including area, perimeter, and circularity; scanning electron microscopy was used to screen for evidence of treatment effects on lateral development, surface roughness, and vaterite replacement. The results corroborate those of other experiments with other taxa that observed otolith growth with elevated pCO2, and provide evidence that lateral development and surface roughness increased as well. Both sagittae exhibited increasing area, perimeter, lateral development, and roughness; left lapilli exhibited increasing area and perimeter while right lapilli exhibited increasing lateral development and roughness; and left asterisci exhibited increasing perimeter, roughness, and ellipticity with increasing pCO2. Right lapilli and left asterisci were only impacted by the most extreme pCO2 treatment, suggesting they are resilient to any conditions short of aragonite undersaturation, while all other impacted otoliths responded to lower concentrations. Finally, fish settlement competency at 10 dph was dramatically reduced, and fish standard length marginally reduced with increasing pCO2. Increasing abnormality and asymmetry of otoliths may impact inner ear function by altering otolith-maculae interactions.
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Affiliation(s)
- Robert J. Holmberg
- School for the Environment, University of Massachusetts Boston, Boston, MA, United States of America
| | - Eric Wilcox-Freeburg
- School for the Environment, University of Massachusetts Boston, Boston, MA, United States of America
| | - Andrew L. Rhyne
- Department of Biology, Marine Biology and Environmental Science, Roger Williams University, Bristol, RI, United States of America
- Center for Economic and Environmental Development, Roger Williams University, Bristol, RI, United States of America
| | - Michael F. Tlusty
- School for the Environment, University of Massachusetts Boston, Boston, MA, United States of America
| | - Alan Stebbins
- School for the Environment, University of Massachusetts Boston, Boston, MA, United States of America
| | - Steven W. Nye Jr.
- School for the Environment, University of Massachusetts Boston, Boston, MA, United States of America
| | - Aaron Honig
- School for the Environment, University of Massachusetts Boston, Boston, MA, United States of America
| | - Amy E. Johnston
- School for the Environment, University of Massachusetts Boston, Boston, MA, United States of America
| | - Christine M. San Antonio
- School for the Environment, University of Massachusetts Boston, Boston, MA, United States of America
| | - Bradford Bourque
- Center for Economic and Environmental Development, Roger Williams University, Bristol, RI, United States of America
| | - Robyn E. Hannigan
- School for the Environment, University of Massachusetts Boston, Boston, MA, United States of America
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Newcomb LA, George MN, O’Donnell MJ, Carrington E. Only as strong as the weakest link: structural analysis of the combined effects of elevated temperature and pCO 2 on mussel attachment. CONSERVATION PHYSIOLOGY 2019; 7:coz068. [PMID: 31687146 PMCID: PMC6822540 DOI: 10.1093/conphys/coz068] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2019] [Revised: 07/13/2019] [Accepted: 08/08/2019] [Indexed: 05/11/2023]
Abstract
Predicting how combinations of stressors will affect failure risk is a key challenge for the field of ecomechanics and, more generally, ecophysiology. Environmental conditions often influence the manufacture and durability of biomaterials, inducing structural failure that potentially compromises organismal reproduction, growth, and survival. Species known for tight linkages between structural integrity and survival include bivalve mussels, which produce numerous byssal threads to attach to hard substrate. Among the current environmental threats to marine organisms are ocean warming and acidification. Elevated pCO2 exposure is known to weaken byssal threads by compromising the strength of the adhesive plaque. This study uses structural analysis to evaluate how an additional stressor, elevated temperature, influences byssal thread quality and production. Mussels (Mytilus trossulus) were placed in controlled temperature and pCO2 treatments, and then, newly produced threads were counted and pulled to failure to determine byssus strength. The effects of elevated temperature on mussel attachment were dramatic; mussels produced 60% weaker and 65% fewer threads at 25°C in comparison to 10°C. These effects combine to weaken overall attachment by 64-88% at 25°C. The magnitude of the effect of pCO2 on thread strength was substantially lower than that of temperature and, contrary to our expectations, positive at high pCO2 exposure. Failure mode analysis localized the effect of temperature to the proximal region of the thread, whereas pCO2 affected only the adhesive plaques. The two stressors therefore act independently, and because their respective target regions are interconnected (resisting tension in series), their combined effects on thread strength are exactly equal to the effect of the strongest stressor. Altogether, these results show that mussels, and the coastal communities they support, may be more vulnerable to the negative effects of ocean warming than ocean acidification.
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Affiliation(s)
- Laura A Newcomb
- Department of Biology, Life Sciences Building, University of Washington, Box 351800, Seattle, WA 98195, USA
- Friday Harbor Laboratories, University of Washington, 620 University Road, Friday Harbor, WA 98250, USA
| | - Matthew N George
- Department of Biology, Life Sciences Building, University of Washington, Box 351800, Seattle, WA 98195, USA
- Friday Harbor Laboratories, University of Washington, 620 University Road, Friday Harbor, WA 98250, USA
| | - Michael J O’Donnell
- Friday Harbor Laboratories, University of Washington, 620 University Road, Friday Harbor, WA 98250, USA
- Department of Bioengineering, 306 Stanley Hall #1762, University of California, Berkeley, CA 94720, USA
| | - Emily Carrington
- Department of Biology, Life Sciences Building, University of Washington, Box 351800, Seattle, WA 98195, USA
- Friday Harbor Laboratories, University of Washington, 620 University Road, Friday Harbor, WA 98250, USA
- Corresponding author: Department of Biology, Life Sciences Building, University of Washington, Box 351800, Seattle WA 98195, USA
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33
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Byrne M, Fitzer S. The impact of environmental acidification on the microstructure and mechanical integrity of marine invertebrate skeletons. CONSERVATION PHYSIOLOGY 2019; 7:coz062. [PMID: 31737270 PMCID: PMC6846232 DOI: 10.1093/conphys/coz062] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/25/2019] [Accepted: 07/25/2019] [Indexed: 05/20/2023]
Abstract
Ocean acidification (OA), from seawater uptake of anthropogenic CO2, has a suite of negative effects on the ability of marine invertebrates to produce and maintain their skeletons. Increased organism pCO2 causes hypercapnia, an energetically costly physiological stress. OA alters seawater carbonate chemistry, limiting the carbonate available to form the calcium carbonate (CaCO3) minerals used to build skeletons. The reduced saturation state of CaCO3 also causes corrosion of CaCO3 structures. Global change is also accelerating coastal acidification driven by land-run off (e.g. acid soil leachates, tannic acid). Building and maintaining marine biomaterials in the face of changing climate will depend on the balance between calcification and dissolution. Overall, in response to environmental acidification, many calcifiers produce less biomineral and so have smaller body size. Studies of skeleton development in echinoderms and molluscs across life stages show the stunting effect of OA. For corals, linear extension may be maintained, but at the expense of less dense biomineral. Conventional metrics used to quantify growth and calcification need to be augmented by characterisation of the changes to biomineral structure and mechanical integrity caused by environmental acidification. Scanning electron microscopy and microcomputed tomography of corals, tube worms and sea urchins exposed to experimental (laboratory) and natural (vents, coastal run off) acidification show a less dense biomineral with greater porosity and a larger void space. For bivalves, CaCO3 crystal deposition is more chaotic in response to both ocean and coastal acidification. Biomechanics tests reveal that these changes result in weaker, more fragile skeletons, compromising their vital protective roles. Vulnerabilities differ among taxa and depend on acidification level. Climate warming has the potential to ameliorate some of the negative effects of acidification but may also make matters worse. The integrative morphology-ecomechanics approach is key to understanding how marine biominerals will perform in the face of changing climate.
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Affiliation(s)
- Maria Byrne
- School of Medical Science and School of Life and Environmental Science, The University of Sydney, NSW 2006, Australia
- Corresponding author: School of Medical Science and School of Life and Environmental Science, The University of Sydney, NSW 2006, Australia.
| | - Susan Fitzer
- Institute of Aquaculture, University of Stirling, Stirling, FK9 4LA, UK
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Ragagnin MN, McCarthy ID, Fernandez WS, Tschiptschin AP, Turra A. Vulnerability of juvenile hermit crabs to reduced seawater pH and shading. MARINE ENVIRONMENTAL RESEARCH 2018; 142:130-140. [PMID: 30316461 DOI: 10.1016/j.marenvres.2018.10.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 10/04/2018] [Accepted: 10/04/2018] [Indexed: 06/08/2023]
Abstract
Multiple simultaneous stressors induced by anthropogenic activities may amplify their impacts on marine organisms. The effects of ocean acidification, in combination with other anthropogenic impacts (apart from temperature) are poorly understood, especially in coastal regions. In these areas, shading caused by infrastructure development, such as harbor construction, may potentially interact with CO2-induced pH reduction and affect invertebrate populations. Here, we evaluated the effects of reduced pH (7.6) and shading (24h in darkness) on mortality, growth, calcification and displacement behavior to live predator (danger signal) and dead gastropod (resource availability signal) odors using juveniles of the hermit crab Pagurus criniticornis collected in Araçá Bay (São Paulo state, Southeastern Brazil). After a 98 day experimental period, both stressors had a significant interaction effect on mortality, and an additive effect on total growth. No difference in calcification was recorded among treatments, indicating that individuals were able to maintain calcification under reduced pH conditions. When exposed to odor of live predators, crab responses were only affected by shading. However, an interactive effect between both stressors was observed in response to gastropod odor, leading to reduced displacement behavior. This study shows how local disturbance impacts may enhance the effects of global environmental change on intertidal crustacean populations.
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Affiliation(s)
- Marilia Nagata Ragagnin
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico, 191, 05508-120, São Paulo, SP, Brazil.
| | - Ian Donald McCarthy
- School of Ocean Sciences, Bangor University, Askew St, Menai Bridge LL59 5AB, Anglesey, United Kingdom.
| | - Wellington Silva Fernandez
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico, 191, 05508-120, São Paulo, SP, Brazil.
| | - André Paulo Tschiptschin
- Departamento de Engenharia Metalúrgica e de Materiais, Escola Politécnica, Universidade de São Paulo, Av. Professor Mello Moraes, 2463, 05508-030, São Paulo, SP, Brazil.
| | - Alexander Turra
- Instituto Oceanográfico, Universidade de São Paulo, Praça do Oceanográfico, 191, 05508-120, São Paulo, SP, Brazil.
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Tai TC, Harley CD, Cheung WW. Comparing model parameterizations of the biophysical impacts of ocean acidification to identify limitations and uncertainties. Ecol Modell 2018. [DOI: 10.1016/j.ecolmodel.2018.07.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Yuan X, McCoy SJ, Du Y, Widdicombe S, Hall-Spencer JM. Physiological and Behavioral Plasticity of the Sea Cucumber Holothuria forskali (Echinodermata, Holothuroidea) to Acidified Seawater. Front Physiol 2018; 9:1339. [PMID: 30319447 PMCID: PMC6167980 DOI: 10.3389/fphys.2018.01339] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 09/05/2018] [Indexed: 01/31/2023] Open
Abstract
Research into the effects of reduced pH caused by rising CO2 on echinoderms has been strongly biased toward those groups which rely heavily on calcification, such as sea urchins. There is very limited information available for groups that are less reliant on calcification, such as sea cucumbers. Moreover, plasticity in physiology and behavior in holothurians, which is considered to be critical to cope with ocean acidification, remains even less understood. Here, we examined the effects of a 22-week exposure to three pH levels (pH 7.97, 7.88, and 7.79) on the responses of adult Holothuria forskali. This is an abundant and ecologically important sea cucumber in shallow waters of the northeast Atlantic and Mediterranean. The holothurians did not exhibit serious acidosis after a 4-week gradually decreased pH exposure, possibly due to the slow acclimation period. After an additional 18 weeks of exposure, coelomic acid-base parameters did not differ significantly among the pH treatments, whereas they were higher than in week 4. Gonad development, defense behavior, and the structure and Ca2+ and Mg2+ concentrations of calcareous endoskeleton deposited in the body wall were all unaffected by decreased levels of seawater pH. No statistical differences were found after 22 weeks, and adult H. forskali showed strong physiological and behavioral plasticity to the effects of lowered seawater pH. While the interpretation of our results is restricted due to small sample sizes, this first long-term study of the effects of seawater acidification on sea cucumbers revealed resilience within the wide natural range of pCO2 found in NE Atlantic coastal waters.
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Affiliation(s)
- Xiutang Yuan
- Marine Biology and Ecology Research Centre, University of Plymouth, Plymouth, United Kingdom
- Plymouth Marine Laboratory, Plymouth, United Kingdom
- National Marine Environmental Monitoring Center, State Oceanic Administration, Dalian, China
| | - Sophie J. McCoy
- Plymouth Marine Laboratory, Plymouth, United Kingdom
- Department of Biological Sciences, Florida State University, Tallahassee, FL, United States
| | - Yongfen Du
- Plymouth Marine Laboratory, Plymouth, United Kingdom
- School of Geography and Ocean Science, Nanjing University, Nanjing, China
| | | | - Jason M. Hall-Spencer
- Marine Biology and Ecology Research Centre, University of Plymouth, Plymouth, United Kingdom
- Shimoda Marine Research Centre, University of Tsukuba, Tsukuba, Japan
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37
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Cao R, Liu Y, Wang Q, Yang D, Liu H, Ran W, Qu Y, Zhao J. Seawater Acidification Reduced the Resistance of Crassostrea gigas to Vibrio splendidus Challenge: An Energy Metabolism Perspective. Front Physiol 2018; 9:880. [PMID: 30050457 PMCID: PMC6052255 DOI: 10.3389/fphys.2018.00880] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 06/19/2018] [Indexed: 11/13/2022] Open
Abstract
Negative physiological impacts induced by exposure to acidified seawater might sensitize marine organisms to future environmental stressors, such as disease outbreak. The goal of this study was to evaluate if ocean acidification (OA) could reduce the resistance capability of the Pacific oyster (Crassostrea gigas) to Vibrio splendidus challenge from an energy metabolism perspective. In this study, the Pacific oyster was exposed to OA (pH 7.6) for 28 days and then challenged by V. splendidus for another 72 h. Antioxidative responses, lipid peroxidation, metabolic (energy sensors, aerobic metabolism, and anaerobic metabolism) gene expression, glycolytic enzyme activity, and the content of energy reserves (glycogen and protein) were investigated to evaluate the environmental risk of pathogen infection under the condition of OA. Our results demonstrated that following the exposure to seawater acidification, oysters exhibited an energy modulation with slight inhibition of aerobic energy metabolism, stimulation of anaerobic metabolism, and increased glycolytic enzyme activity. However, the energy modulation ability and antioxidative regulation of oysters exposed to seawater acidification may be overwhelmed by a subsequent pathogen challenge, resulting in increased oxidative damage, decreased aerobic metabolism, stimulated anaerobic metabolism, and decreased energy reserves. Overall, although anaerobic metabolism was initiated to partially compensate for inhibited aerobic energy metabolism, increased oxidative damage combined with depleted energy reserves suggested that oysters were in an unsustainable bioenergetic state and were thereby incapable of supporting long-term population viability under conditions of seawater acidification and a pathogen challenge from V. splendidus.
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Affiliation(s)
- Ruiwen Cao
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yongliang Liu
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Qing Wang
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Dinglong Yang
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Hui Liu
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
| | - Wen Ran
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yi Qu
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jianmin Zhao
- Muping Coastal Environmental Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
- Research and Development Center for Efficient Utilization of Coastal Bioresources, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, China
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38
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Carbonate chemistry of an in-situ free-ocean CO 2 enrichment experiment (antFOCE) in comparison to short term variation in Antarctic coastal waters. Sci Rep 2018; 8:2816. [PMID: 29434330 PMCID: PMC5809532 DOI: 10.1038/s41598-018-21029-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Accepted: 01/29/2018] [Indexed: 11/08/2022] Open
Abstract
Free-ocean CO2 enrichment (FOCE) experiments have been deployed in marine ecosystems to manipulate carbonate system conditions to those predicted in future oceans. We investigated whether the pH/carbonate chemistry of extremely cold polar waters can be manipulated in an ecologically relevant way, to represent conditions under future atmospheric CO2 levels, in an in-situ FOCE experiment in Antarctica. We examined spatial and temporal variation in local ambient carbonate chemistry at hourly intervals at two sites between December and February and compared these with experimental conditions. We successfully maintained a mean pH offset in acidified benthic chambers of -0.38 (±0.07) from ambient for approximately 8 weeks. Local diel and seasonal fluctuations in ambient pH were duplicated in the FOCE system. Large temporal variability in acidified chambers resulted from system stoppages. The mean pH, Ωarag and fCO2 values in the acidified chambers were 7.688 ± 0.079, 0.62 ± 0.13 and 912 ± 150 µatm, respectively. Variation in ambient pH appeared to be mainly driven by salinity and biological production and ranged from 8.019 to 8.192 with significant spatio-temporal variation. This experiment demonstrates the utility of FOCE systems to create conditions expected in future oceans that represent ecologically relevant variation, even under polar conditions.
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Zha S, Liu S, Su W, Shi W, Xiao G, Yan M, Liu G. Laboratory simulation reveals significant impacts of ocean acidification on microbial community composition and host-pathogen interactions between the blood clam and Vibrio harveyi. FISH & SHELLFISH IMMUNOLOGY 2017; 71:393-398. [PMID: 29056489 DOI: 10.1016/j.fsi.2017.10.034] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/29/2017] [Accepted: 10/18/2017] [Indexed: 06/07/2023]
Abstract
It has been suggested that climate change may promote the outbreaks of diseases in the sea through altering the host susceptibility, the pathogen virulence, and the host-pathogen interaction. However, the impacts of ocean acidification (OA) on the pathogen components of bacterial community and the host-pathogen interaction of marine bivalves are still poorly understood. Therefore, 16S rRNA high-throughput sequencing and host-pathogen interaction analysis between blood clam (Tegillarca granosa) and Vibrio harveyi were conducted in the present study to gain a better understanding of the ecological impacts of ocean acidification. The results obtained revealed a significant impact of ocean acidification on the composition of microbial community at laboratory scale. Notably, the abundance of Vibrio, a major group of pathogens to many marine organisms, was significantly increased under ocean acidification condition. In addition, the survival rate and haemolytic activity of V. harveyi were significantly higher in the presence of haemolymph of OA treated T. granosa, indicating a compromised immunity of the clam and enhanced virulence of V. harveyi under future ocean acidification scenarios. Conclusively, the results obtained in this study suggest that future ocean acidification may increase the risk of Vibrio pathogen infection for marine bivalve species, such as blood clams.
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Affiliation(s)
- Shanjie Zha
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Saixi Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Wenhao Su
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Wei Shi
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Guoqiang Xiao
- Zhejiang Mariculture Research Institute, Wenzhou, PR China
| | - Maocang Yan
- Zhejiang Mariculture Research Institute, Wenzhou, PR China
| | - Guangxu Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, PR China.
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40
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Ghedini G, Connell SD. Moving ocean acidification research beyond a simple science: Investigating ecological change and their stabilizers. FOOD WEBS 2017. [DOI: 10.1016/j.fooweb.2017.03.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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41
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Thompson CEL, Silburn B, Williams ME, Hull T, Sivyer D, Amoudry LO, Widdicombe S, Ingels J, Carnovale G, McNeill CL, Hale R, Marchais CL, Hicks N, Smith HEK, Klar JK, Hiddink JG, Kowalik J, Kitidis V, Reynolds S, Woodward EMS, Tait K, Homoky WB, Kröger S, Bolam S, Godbold JA, Aldridge J, Mayor DJ, Benoist NMA, Bett BJ, Morris KJ, Parker ER, Ruhl HA, Statham PJ, Solan M. An approach for the identification of exemplar sites for scaling up targeted field observations of benthic biogeochemistry in heterogeneous environments. BIOGEOCHEMISTRY 2017; 135:1-34. [PMID: 32009689 PMCID: PMC6961521 DOI: 10.1007/s10533-017-0366-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 06/08/2017] [Indexed: 05/16/2023]
Abstract
Continental shelf sediments are globally important for biogeochemical activity. Quantification of shelf-scale stocks and fluxes of carbon and nutrients requires the extrapolation of observations made at limited points in space and time. The procedure for selecting exemplar sites to form the basis of this up-scaling is discussed in relation to a UK-funded research programme investigating biogeochemistry in shelf seas. A three-step selection process is proposed in which (1) a target area representative of UK shelf sediment heterogeneity is selected, (2) the target area is assessed for spatial heterogeneity in sediment and habitat type, bed and water column structure and hydrodynamic forcing, and (3) study sites are selected within this target area encompassing the range of spatial heterogeneity required to address key scientific questions regarding shelf scale biogeochemistry, and minimise confounding variables. This led to the selection of four sites within the Celtic Sea that are significantly different in terms of their sediment, bed structure, and macrofaunal, meiofaunal and microbial community structures and diversity, but have minimal variations in water depth, tidal and wave magnitudes and directions, temperature and salinity. They form the basis of a research cruise programme of observation, sampling and experimentation encompassing the spring bloom cycle. Typical variation in key biogeochemical, sediment, biological and hydrodynamic parameters over a pre to post bloom period are presented, with a discussion of anthropogenic influences in the region. This methodology ensures the best likelihood of site-specific work being useful for up-scaling activities, increasing our understanding of benthic biogeochemistry at the UK-shelf scale.
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Affiliation(s)
- C. E. L. Thompson
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, SO14 3ZH UK
| | - B. Silburn
- Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, NR33 0HT UK
| | - M. E. Williams
- National Oceanography Centre, 6 Brownlow St, Liverpool, L3 5DA UK
| | - T. Hull
- Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, NR33 0HT UK
| | - D. Sivyer
- Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, NR33 0HT UK
| | - L. O. Amoudry
- National Oceanography Centre, 6 Brownlow St, Liverpool, L3 5DA UK
| | - S. Widdicombe
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH UK
| | - J. Ingels
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH UK
| | - G. Carnovale
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH UK
| | - C. L. McNeill
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH UK
| | - R. Hale
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, SO14 3ZH UK
| | - C. Laguionie Marchais
- National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton, SO14 3ZH UK
| | - N. Hicks
- Scottish Association for Marine Science, Scottish Marine Institute, Oban, Argyll, PA37 1QA UK
| | - H. E. K. Smith
- National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton, SO14 3ZH UK
| | - J. K. Klar
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, SO14 3ZH UK
- LEGOS, University of Toulouse, IRDm CNES, CNRS, UPS, 14 av. Edouard Belin, 31400 Toulouse, France
| | - J. G. Hiddink
- School of Ocean Sciences, Bangor University, Menai Bridge, LL59 5AB UK
| | - J. Kowalik
- Navama – Technology for Nature, Landshuter Allee 8, 80637 Munich, Germany
| | - V. Kitidis
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH UK
| | - S. Reynolds
- School of Earth and Environmental Sciences, University of Portsmouth, Burnaby Road, Portsmouth, PO1 3QL UK
| | - E. M. S. Woodward
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH UK
| | - K. Tait
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth, PL1 3DH UK
| | - W. B. Homoky
- Department of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN UK
| | - S. Kröger
- Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, NR33 0HT UK
| | - S. Bolam
- Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, NR33 0HT UK
| | - J. A. Godbold
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, SO14 3ZH UK
- Biological Sciences, University of Southampton, Life Sciences Building, Highfield, Southampton SO17 1BJ UK
| | - J. Aldridge
- Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, NR33 0HT UK
| | - D. J. Mayor
- National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton, SO14 3ZH UK
| | - N. M. A. Benoist
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, SO14 3ZH UK
| | - B. J. Bett
- National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton, SO14 3ZH UK
| | - K. J. Morris
- National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton, SO14 3ZH UK
| | - E. R. Parker
- Centre for Environment, Fisheries and Aquaculture Science, Pakefield Road, Lowestoft, NR33 0HT UK
| | - H. A. Ruhl
- National Oceanography Centre, University of Southampton Waterfront Campus, European Way, Southampton, SO14 3ZH UK
| | - P. J. Statham
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, SO14 3ZH UK
| | - M. Solan
- Ocean and Earth Science, University of Southampton, National Oceanography Centre, Southampton, SO14 3ZH UK
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Lange R, Marshall D. Ecologically relevant levels of multiple, common marine stressors suggest antagonistic effects. Sci Rep 2017; 7:6281. [PMID: 28740139 PMCID: PMC5524789 DOI: 10.1038/s41598-017-06373-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 06/12/2017] [Indexed: 11/09/2022] Open
Abstract
Stressors associated with global change will be experienced simultaneously and may act synergistically, so attempts to estimate the capacity of marine systems to cope with global change requires a multi-stressor approach. Because recent evidence suggests that stressor effects can be context-dependent, estimates of how stressors are experienced in ecologically realistic settings will be particularly valuable. To enhance our understanding of the interplay between environmental effects and the impact of multiple stressors from both natural and anthropogenic sources, we conducted a field experiment. We explored the impact of multiple, functionally varied stressors from both natural and anthropogenic sources experienced during early life history in a common sessile marine invertebrate, Bugula neritina. Natural spatial environmental variation induced differences in conspecific densities, allowing us to test for density-driven context-dependence of stressor effects. We indeed found density-dependent effects. Under high conspecific density, individual survival increased, which offset part of the negative effects of experiencing stressors. Experiencing multiple stressors early in life history translated to a decreased survival in the field, albeit the effects were not as drastic as we expected: our results are congruent with antagonistic stressor effects. We speculate that when individual stressors are more subtle, stressor synergies become less common.
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Affiliation(s)
- Rolanda Lange
- Centre for Geometric Biology/School of Biological Sciences, Monash University, Clayton, VIC 3800, Australia.
| | - Dustin Marshall
- Centre for Geometric Biology/School of Biological Sciences, Monash University, Clayton, VIC 3800, Australia
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43
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Ashur MM, Johnston NK, Dixson DL. Impacts of Ocean Acidification on Sensory Function in Marine Organisms. Integr Comp Biol 2017; 57:63-80. [DOI: 10.1093/icb/icx010] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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44
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Underwood CN, Davies TW, Queirós AM. Artificial light at night alters trophic interactions of intertidal invertebrates. J Anim Ecol 2017; 86:781-789. [PMID: 28452048 DOI: 10.1111/1365-2656.12670] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 03/14/2017] [Indexed: 11/27/2022]
Abstract
Despite being globally widespread in coastal regions, the impacts of light pollution on intertidal ecosystems has received little attention. Intertidal species exhibit many night-time-dependent ecological strategies, including feeding, reproduction, orientation and predator avoidance, which are likely negatively affected by shifting light regimes, as has been observed in terrestrial and aquatic taxa. Coastal lighting may shape intertidal communities through its influence on the nocturnal foraging activity of dogwhelks (Nucella lapillus), a widespread predatory mollusc that structures biodiversity in temperate rocky shores. In the laboratory, we investigated whether the basal and foraging activity of this predator was affected by exposure to night-time lighting both in the presence and absence of olfactory predator cues (Carcinus maenas, common shore crab). Assessments of dogwhelks' behavioural responses to night-time white LED lighting were performed on individuals that had been acclimated to night-time white LED lighting conditions for 16 days and individuals that had not previously been exposed to artificial light at night. Dogwhelks acclimated to night-time lighting exhibited natural refuge-seeking behaviour less often compared to control animals, but were more likely to respond to and handle prey irrespective of whether olfactory predator cues were present. These responses suggest night-time lighting likely increased the energetic demand of dogwhelks through stress, encouraging foraging whenever food was available, regardless of potential danger. Contrastingly, whelks not acclimated under night-time lighting were more likely to respond to the presence of prey under artificial light at night when olfactory predator cues were present, indicating an opportunistic shift towards the use of visual instead of olfactory cues in risk evaluation. These results demonstrate that artificial night-time lighting influences the behaviour of intertidal fauna such that the balance of interspecific interactions involved in community structuring may be affected.
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Affiliation(s)
- Charlotte N Underwood
- Centre for Ecology and Conservation, Biosciences, College of Life and Environmental Sciences, University of Exeter, Penryn, Cornwall, TR10 9FE, UK.,Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall, TR10 9EZ, UK
| | - Thomas W Davies
- Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall, TR10 9EZ, UK
| | - Ana M Queirós
- Plymouth Marine Laboratory, Plymouth, Devon, PL1 3DH, UK
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45
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Clapham ME. Organism activity levels predict marine invertebrate survival during ancient global change extinctions. GLOBAL CHANGE BIOLOGY 2017; 23:1477-1485. [PMID: 27570079 DOI: 10.1111/gcb.13484] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Revised: 07/11/2016] [Accepted: 08/23/2016] [Indexed: 06/06/2023]
Abstract
Multistressor global change, the combined influence of ocean warming, acidification, and deoxygenation, poses a serious threat to marine organisms. Experimental studies imply that organisms with higher levels of activity should be more resilient, but testing this prediction and understanding organism vulnerability at a global scale, over evolutionary timescales, and in natural ecosystems remain challenging. The fossil record, which contains multiple extinctions triggered by multistressor global change, is ideally suited for testing hypotheses at broad geographic, taxonomic, and temporal scales. Here, I assess the importance of activity level for survival of well-skeletonized benthic marine invertebrates over a 100-million-year-long interval (Permian to Jurassic periods) containing four global change extinctions, including the end-Permian and end-Triassic mass extinctions. More active organisms, based on a semiquantitative score incorporating feeding and motility, were significantly more likely to survive during three of the four extinction events (Guadalupian, end-Permian, and end-Triassic). In contrast, activity was not an important control on survival during nonextinction intervals. Both the end-Permian and end-Triassic mass extinctions also triggered abrupt shifts to increased dominance by more active organisms. Although mean activity gradually returned toward pre-extinction values, the net result was a permanent ratcheting of ecosystem-wide activity to higher levels. Selectivity patterns during ancient global change extinctions confirm the hypothesis that higher activity, a proxy for respiratory physiology, is a fundamental control on survival, although the roles of specific physiological traits (such as extracellular pCO2 or aerobic scope) cannot be distinguished. Modern marine ecosystems are dominated by more active organisms, in part because of selectivity ratcheting during these ancient extinctions, so on average may be less vulnerable to global change stressors than ancient counterparts. However, ancient extinctions demonstrate that even active organisms can suffer major extinction when the intensity of environmental disruption is intense.
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Affiliation(s)
- Matthew E Clapham
- Department of Earth and Planetary Sciences, University of California - Santa Cruz, Santa Cruz, CA, 95064, USA
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46
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Calosi P, Melatunan S, Turner LM, Artioli Y, Davidson RL, Byrne JJ, Viant MR, Widdicombe S, Rundle SD. Regional adaptation defines sensitivity to future ocean acidification. Nat Commun 2017; 8:13994. [PMID: 28067268 PMCID: PMC5227702 DOI: 10.1038/ncomms13994] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 11/18/2016] [Indexed: 11/22/2022] Open
Abstract
Physiological responses to temperature are known to be a major determinant of species distributions and can dictate the sensitivity of populations to global warming. In contrast, little is known about how other major global change drivers, such as ocean acidification (OA), will shape species distributions in the future. Here, by integrating population genetics with experimental data for growth and mineralization, physiology and metabolomics, we demonstrate that the sensitivity of populations of the gastropod Littorina littorea to future OA is shaped by regional adaptation. Individuals from populations towards the edges of the natural latitudinal range in the Northeast Atlantic exhibit greater shell dissolution and the inability to upregulate their metabolism when exposed to low pH, thus appearing most sensitive to low seawater pH. Our results suggest that future levels of OA could mediate temperature-driven shifts in species distributions, thereby influencing future biogeography and the functioning of marine ecosystems. Global warming is expected to lead to shifts in species' geographic ranges to track preferred temperatures. Here, the authors show that populations of the common periwinkle vary in their sensitivity to ocean acidification, another major global change driver, which could further restrict range shifts caused by warming.
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Affiliation(s)
- Piero Calosi
- Département de Biologie Chimie et Géographie, Université du Québec à Rimouski, Rimouski, Quebec G5L 3A1, Canada.,Marine Biology &Ecology Research Centre, School of Marine Science and Engineering, Plymouth University, Drake Circus, Plymouth, Devon PL4 8AA, UK
| | - Sedercor Melatunan
- Marine Biology &Ecology Research Centre, School of Marine Science and Engineering, Plymouth University, Drake Circus, Plymouth, Devon PL4 8AA, UK.,Faculty of Fisheries and Marine Science, University of Pattimura, Kampus Poka, Ambon 97233, Indonesia
| | - Lucy M Turner
- Marine Biology &Ecology Research Centre, School of Marine Science and Engineering, Plymouth University, Drake Circus, Plymouth, Devon PL4 8AA, UK.,Department of Marine Sciences, University of Gothenburg, Box 460, Gothenburg 405 30, Sweden
| | - Yuri Artioli
- Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth PL1 3DH, UK
| | - Robert L Davidson
- NERC Biomolecular Analysis Facility-Metabolomics Node (NBAF-B), University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Jonathan J Byrne
- NERC Biomolecular Analysis Facility-Metabolomics Node (NBAF-B), University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Mark R Viant
- NERC Biomolecular Analysis Facility-Metabolomics Node (NBAF-B), University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.,School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Stephen Widdicombe
- Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth PL1 3DH, UK
| | - Simon D Rundle
- Marine Biology &Ecology Research Centre, School of Marine Science and Engineering, Plymouth University, Drake Circus, Plymouth, Devon PL4 8AA, UK
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47
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Using Prokaryotes for Carbon Capture Storage. Trends Biotechnol 2017; 35:22-32. [DOI: 10.1016/j.tibtech.2016.06.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/24/2016] [Accepted: 06/27/2016] [Indexed: 11/20/2022]
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48
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McCoy SJ, Allesina S, Pfister CA. Ocean acidification affects competition for space: projections of community structure using cellular automata. Proc Biol Sci 2016; 283:20152561. [PMID: 26936244 DOI: 10.1098/rspb.2015.2561] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Historical ecological datasets from a coastal marine community of crustose coralline algae (CCA) enabled the documentation of ecological changes in this community over 30 years in the Northeast Pacific. Data on competitive interactions obtained from field surveys showed concordance between the 1980s and 2013, yet also revealed a reduction in how strongly species interact. Here, we extend these empirical findings with a cellular automaton model to forecast ecological dynamics. Our model suggests the emergence of a new dominant competitor in a global change scenario, with a reduced role of herbivory pressure, or trophic control, in regulating competition among CCA. Ocean acidification, due to its energetic demands, may now instead play this role in mediating competitive interactions and thereby promote species diversity within this guild.
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Affiliation(s)
- Sophie J McCoy
- Plymouth Marine Laboratory, Prospect Place, The Hoe, Plymouth PL1 3DH, UK
| | - Stefano Allesina
- Department of Ecology and Evolution, The University of Chicago, 1101 East 57th Street, Chicago, IL 60637, USA
| | - Catherine A Pfister
- Department of Ecology and Evolution, The University of Chicago, 1101 East 57th Street, Chicago, IL 60637, USA
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49
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Queirós AM, Huebert KB, Keyl F, Fernandes JA, Stolte W, Maar M, Kay S, Jones MC, Hamon KG, Hendriksen G, Vermard Y, Marchal P, Teal LR, Somerfield PJ, Austen MC, Barange M, Sell AF, Allen I, Peck MA. Solutions for ecosystem-level protection of ocean systems under climate change. GLOBAL CHANGE BIOLOGY 2016; 22:3927-3936. [PMID: 27396719 DOI: 10.1111/gcb.13423] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 06/03/2016] [Accepted: 06/28/2016] [Indexed: 06/06/2023]
Abstract
The Paris Conference of Parties (COP21) agreement renewed momentum for action against climate change, creating the space for solutions for conservation of the ocean addressing two of its largest threats: climate change and ocean acidification (CCOA). Recent arguments that ocean policies disregard a mature conservation research field and that protected areas cannot address climate change may be oversimplistic at this time when dynamic solutions for the management of changing oceans are needed. We propose a novel approach, based on spatial meta-analysis of climate impact models, to improve the positioning of marine protected areas to limit CCOA impacts. We do this by estimating the vulnerability of ocean ecosystems to CCOA in a spatially explicit manner and then co-mapping human activities such as the placement of renewable energy developments and the distribution of marine protected areas. We test this approach in the NE Atlantic considering also how CCOA impacts the base of the food web which supports protected species, an aspect often neglected in conservation studies. We found that, in this case, current regional conservation plans protect areas with low ecosystem-level vulnerability to CCOA, but disregard how species may redistribute to new, suitable and productive habitats. Under current plans, these areas remain open to commercial extraction and other uses. Here, and worldwide, ocean conservation strategies under CCOA must recognize the long-term importance of these habitat refuges, and studies such as this one are needed to identify them. Protecting these areas creates adaptive, climate-ready and ecosystem-level policy options for conservation, suitable for changing oceans.
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Affiliation(s)
- Ana M Queirós
- Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, UK
| | - Klaus B Huebert
- University of Hamburg, Olbersweg 24, Hamburg, 22767, Germany
- Horn Point Laboratory, University of Maryland Center for Environmental Science, P.O. Box 775, Cambridge, MD, 21613, USA
| | - Friedemann Keyl
- Thünen Institute of Sea Fisheries, Palmaille 9, Hamburg, 22767, Germany
| | - Jose A Fernandes
- Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, UK
| | - Willem Stolte
- Deltares, Boussinesqweg 1, Delft, 2629 HV, The Netherlands
| | - Marie Maar
- Deltares, Boussinesqweg 1, Delft, 2629 HV, The Netherlands
- Department of Bioscience, Aarhus University, Frederiksborgvej 399, PO Box 358, Roskilde, 4000, Denmark
| | - Susan Kay
- Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, UK
| | - Miranda C Jones
- Department of Zoology, University of Cambridge, Downing Street, Cambridge, CB2 3EJ, UK
| | - Katell G Hamon
- LEI - Wageningen UR, Alexanderveld 5, The Hague, 2585 DB, The Netherlands
| | | | - Youen Vermard
- Département Ressources Biologiques et Environnement, Institut Français de Recherche Pour L'Exploitation de la Mer, Quai Gambetta BP 699, Boulogne-sur-Mer, 62321, France
| | - Paul Marchal
- Département Ressources Biologiques et Environnement, Institut Français de Recherche Pour L'Exploitation de la Mer, Quai Gambetta BP 699, Boulogne-sur-Mer, 62321, France
| | - Lorna R Teal
- IMARES, Haringkade 1, Ijmuiden, 1976CP, The Netherlands
| | | | - Melanie C Austen
- Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, UK
| | - Manuel Barange
- Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, UK
- Fisheries and Aquaculture Policy and Resources Division, Food and Agricultural Organization, Viale Delle Terme di Caracalla, Rome, 00153, Italy
| | - Anne F Sell
- Horn Point Laboratory, University of Maryland Center for Environmental Science, P.O. Box 775, Cambridge, MD, 21613, USA
| | - Icarus Allen
- Plymouth Marine Laboratory, Prospect Place, Plymouth, PL1 3DH, UK
| | - Myron A Peck
- University of Hamburg, Olbersweg 24, Hamburg, 22767, Germany
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Gibbin EM, Chakravarti LJ, Jarrold MD, Christen F, Turpin V, Massamba N'Siala G, Blier PU, Calosi P. Can multi-generational exposure to ocean warming and acidification lead to the adaptation of life history and physiology in a marine metazoan? ACTA ACUST UNITED AC 2016; 220:551-563. [PMID: 27903701 DOI: 10.1242/jeb.149989] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 11/21/2016] [Indexed: 01/01/2023]
Abstract
Ocean warming and acidification are concomitant global drivers that are currently threatening the survival of marine organisms. How species will respond to these changes depends on their capacity for plastic and adaptive responses. Little is known about the mechanisms that govern plasticity and adaptability or how global changes will influence these relationships across multiple generations. Here, we exposed the emerging model marine polychaete Ophryotrocha labronica to conditions simulating ocean warming and acidification, in isolation and in combination over five generations to identify: (i) how multiple versus single global change drivers alter both juvenile and adult life-history traits; (ii) the mechanistic link between adult physiological and fitness-related life-history traits; and (iii) whether the phenotypic changes observed over multiple generations are of plastic and/or adaptive origin. Two juvenile (developmental rate; survival to sexual maturity) and two adult (average reproductive body size; fecundity) life-history traits were measured in each generation, in addition to three physiological (cellular reactive oxygen species content, mitochondrial density, mitochondrial capacity) traits. We found that multi-generational exposure to warming alone caused an increase in juvenile developmental rate, reactive oxygen species production and mitochondrial density, decreases in average reproductive body size and fecundity, and fluctuations in mitochondrial capacity, relative to control conditions. Exposure to ocean acidification alone had only minor effects on juvenile developmental rate. Remarkably, when both drivers of global change were present, only mitochondrial capacity was significantly affected, suggesting that ocean warming and acidification act as opposing vectors of stress across multiple generations.
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Affiliation(s)
- Emma M Gibbin
- Laboratory for Biological Geochemistry, School of Architecture, Civil and Environmental Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne CH-1015, Switzerland .,Département de biologie, chimie et géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC, Canada G5L 3A1
| | - Leela J Chakravarti
- Département de biologie, chimie et géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC, Canada G5L 3A1.,College of Science and Engineering, James Cook University, Townsville, QLD4811, Australia
| | - Michael D Jarrold
- Département de biologie, chimie et géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC, Canada G5L 3A1.,College of Science and Engineering, James Cook University, Townsville, QLD4811, Australia
| | - Felix Christen
- Département de biologie, chimie et géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC, Canada G5L 3A1
| | - Vincent Turpin
- Département de biologie, chimie et géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC, Canada G5L 3A1
| | - Gloria Massamba N'Siala
- Département de biologie, chimie et géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC, Canada G5L 3A1
| | - Pierre U Blier
- Département de biologie, chimie et géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC, Canada G5L 3A1
| | - Piero Calosi
- Département de biologie, chimie et géographie, Université du Québec à Rimouski, 300 Allée des Ursulines, Rimouski, QC, Canada G5L 3A1
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