Seawater acidification more than warming presents a challenge for two Antarctic macroalgal-associated amphipods
Elevated atmospheric pCO2 concentrations are triggering seawater pH reductions and seawater temperature increases along the western Antarctic Peninsula (WAP). These factors in combination have the potential to influence organisms in an antagonistic, additive, or synergistic manner. The amphipods Gon...
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Language: | English |
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PANGAEA
2016
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.870407 https://doi.org/10.1594/PANGAEA.870407 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.870407 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Alkalinity total standard deviation Animalia Antarctic Aragonite saturation state Arthropoda Behaviour Benthic animals Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2calc Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Consumption rate per individual Date Dry mass Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gondogeneia antarctica Growth/Morphology Incubation duration Individuals Laboratory experiment Lipids Monitoring station MONS Mortality/Survival OA-ICC Ocean Acidification International Coordination Centre Palmer_station Paradexamine fissicauda Partial pressure of carbon dioxide |
spellingShingle |
Alkalinity total standard deviation Animalia Antarctic Aragonite saturation state Arthropoda Behaviour Benthic animals Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2calc Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Consumption rate per individual Date Dry mass Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gondogeneia antarctica Growth/Morphology Incubation duration Individuals Laboratory experiment Lipids Monitoring station MONS Mortality/Survival OA-ICC Ocean Acidification International Coordination Centre Palmer_station Paradexamine fissicauda Partial pressure of carbon dioxide Schram, Julie B Schoenrock, Kathryn M McClintock, James B Amsler, Charles D Angus, Robert A Seawater acidification more than warming presents a challenge for two Antarctic macroalgal-associated amphipods |
topic_facet |
Alkalinity total standard deviation Animalia Antarctic Aragonite saturation state Arthropoda Behaviour Benthic animals Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2calc Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Consumption rate per individual Date Dry mass Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gondogeneia antarctica Growth/Morphology Incubation duration Individuals Laboratory experiment Lipids Monitoring station MONS Mortality/Survival OA-ICC Ocean Acidification International Coordination Centre Palmer_station Paradexamine fissicauda Partial pressure of carbon dioxide |
description |
Elevated atmospheric pCO2 concentrations are triggering seawater pH reductions and seawater temperature increases along the western Antarctic Peninsula (WAP). These factors in combination have the potential to influence organisms in an antagonistic, additive, or synergistic manner. The amphipods Gondogeneia antarctica and Paradexamine fissicauda represent prominent members of macroalgal-associated mesograzer assemblages of the WAP. Our primary objective was to investigate amphipod behavioral and physiological responses to reduced seawater pH and elevated temperature to evaluate potential cascading ecological impacts. For 90 d, amphipods were exposed to combinations of seawater conditions based on present ambient (pH 8.0, 1.5°C) and predicted end-of-century conditions (pH 7.6, 3.5°C). We recorded survival, molt frequency, and macroalgal consumption rates as well as change in wet mass and proximate body composition (protein and lipid). Survival for both species declined significantly at reduced pH and co-varied with molt frequency. Consumption rates in G. antarctica were significantly higher at reduced pH and there was an additive pH-temperature effect on consumption rates in P. fissicauda. Body mass was reduced for G. antarctica at elevated temperature, but there was no significant effect of pH or temperature on body mass in P. fissicauda. Exposure to the pH or temperature levels tested did not induce significant changes in whole body biochemical composition of G. antarctica, but exposure to elevated temperature resulted in a significant increase in whole body protein content of P. fissicauda. Our study indicates that while elevated temperature causes sub-lethal impacts on both species of amphipods, reduced pH causes significant mortality. |
format |
Dataset |
author |
Schram, Julie B Schoenrock, Kathryn M McClintock, James B Amsler, Charles D Angus, Robert A |
author_facet |
Schram, Julie B Schoenrock, Kathryn M McClintock, James B Amsler, Charles D Angus, Robert A |
author_sort |
Schram, Julie B |
title |
Seawater acidification more than warming presents a challenge for two Antarctic macroalgal-associated amphipods |
title_short |
Seawater acidification more than warming presents a challenge for two Antarctic macroalgal-associated amphipods |
title_full |
Seawater acidification more than warming presents a challenge for two Antarctic macroalgal-associated amphipods |
title_fullStr |
Seawater acidification more than warming presents a challenge for two Antarctic macroalgal-associated amphipods |
title_full_unstemmed |
Seawater acidification more than warming presents a challenge for two Antarctic macroalgal-associated amphipods |
title_sort |
seawater acidification more than warming presents a challenge for two antarctic macroalgal-associated amphipods |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.870407 https://doi.org/10.1594/PANGAEA.870407 |
op_coverage |
LATITUDE: -64.766670 * LONGITUDE: -64.050000 |
long_lat |
ENVELOPE(-64.050000,-64.050000,-64.766670,-64.766670) |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification |
op_relation |
Schram, Julie B; Schoenrock, Kathryn M; McClintock, James B; Amsler, Charles D; Angus, Robert A (2016): Seawater acidification more than warming presents a challenge for two Antarctic macroalgal‑associated amphipods. Marine Ecology Progress Series, 554, 81-97, https://doi.org/10.3354/meps11814 Schram, Julie B (2016): NSF-ANT10-41022 [dataset]. U.S. Antarctic Program Data Center, http://www.usap-data.org/entry/NSF-ANT10-41022/2016-07-06_09-49-03/ Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James C; Gentili, Bernard; Proye, Aurélien; Soetaert, Karline; Rae, James (2016): seacarb: seawater carbonate chemistry with R. R package version 3.1. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.870407 https://doi.org/10.1594/PANGAEA.870407 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.87040710.3354/meps11814 |
_version_ |
1810289239107043328 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.870407 2024-09-15T17:48:07+00:00 Seawater acidification more than warming presents a challenge for two Antarctic macroalgal-associated amphipods Schram, Julie B Schoenrock, Kathryn M McClintock, James B Amsler, Charles D Angus, Robert A LATITUDE: -64.766670 * LONGITUDE: -64.050000 2016 text/tab-separated-values, 23366 data points https://doi.pangaea.de/10.1594/PANGAEA.870407 https://doi.org/10.1594/PANGAEA.870407 en eng PANGAEA Schram, Julie B; Schoenrock, Kathryn M; McClintock, James B; Amsler, Charles D; Angus, Robert A (2016): Seawater acidification more than warming presents a challenge for two Antarctic macroalgal‑associated amphipods. Marine Ecology Progress Series, 554, 81-97, https://doi.org/10.3354/meps11814 Schram, Julie B (2016): NSF-ANT10-41022 [dataset]. U.S. Antarctic Program Data Center, http://www.usap-data.org/entry/NSF-ANT10-41022/2016-07-06_09-49-03/ Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James C; Gentili, Bernard; Proye, Aurélien; Soetaert, Karline; Rae, James (2016): seacarb: seawater carbonate chemistry with R. R package version 3.1. https://cran.r-project.org/package=seacarb https://doi.pangaea.de/10.1594/PANGAEA.870407 https://doi.org/10.1594/PANGAEA.870407 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Alkalinity total standard deviation Animalia Antarctic Aragonite saturation state Arthropoda Behaviour Benthic animals Benthos Bicarbonate ion Bottles or small containers/Aquaria (<20 L) Calcite saturation state Calculated using CO2calc Calculated using seacarb after Nisumaa et al. (2010) Carbon inorganic dissolved Carbonate ion Carbonate system computation flag Carbon dioxide Coast and continental shelf Consumption rate per individual Date Dry mass Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Gondogeneia antarctica Growth/Morphology Incubation duration Individuals Laboratory experiment Lipids Monitoring station MONS Mortality/Survival OA-ICC Ocean Acidification International Coordination Centre Palmer_station Paradexamine fissicauda Partial pressure of carbon dioxide dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.87040710.3354/meps11814 2024-07-24T02:31:33Z Elevated atmospheric pCO2 concentrations are triggering seawater pH reductions and seawater temperature increases along the western Antarctic Peninsula (WAP). These factors in combination have the potential to influence organisms in an antagonistic, additive, or synergistic manner. The amphipods Gondogeneia antarctica and Paradexamine fissicauda represent prominent members of macroalgal-associated mesograzer assemblages of the WAP. Our primary objective was to investigate amphipod behavioral and physiological responses to reduced seawater pH and elevated temperature to evaluate potential cascading ecological impacts. For 90 d, amphipods were exposed to combinations of seawater conditions based on present ambient (pH 8.0, 1.5°C) and predicted end-of-century conditions (pH 7.6, 3.5°C). We recorded survival, molt frequency, and macroalgal consumption rates as well as change in wet mass and proximate body composition (protein and lipid). Survival for both species declined significantly at reduced pH and co-varied with molt frequency. Consumption rates in G. antarctica were significantly higher at reduced pH and there was an additive pH-temperature effect on consumption rates in P. fissicauda. Body mass was reduced for G. antarctica at elevated temperature, but there was no significant effect of pH or temperature on body mass in P. fissicauda. Exposure to the pH or temperature levels tested did not induce significant changes in whole body biochemical composition of G. antarctica, but exposure to elevated temperature resulted in a significant increase in whole body protein content of P. fissicauda. Our study indicates that while elevated temperature causes sub-lethal impacts on both species of amphipods, reduced pH causes significant mortality. Dataset Antarc* Antarctic Antarctic Peninsula Antarctica Ocean acidification PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-64.050000,-64.050000,-64.766670,-64.766670) |