Non-Lethal Effects of Ocean Acidification on the Symbiont-Bearing Benthic Foraminifer Amphistegina gibbosa
The responses of marine taxa to ocean acidification are varied, with, for example, some exhibiting decreased and some increased calcification rates. Experiments were conducted to assess the effect of elevated atmospheric carbon dioxide concentrations on the survival, fitness, shell microfabric and g...
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Online Access: | https://digitalcommons.usf.edu/msc_facpub/920 https://doi.org/10.3354/meps09918 |
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ftusouthflorida:oai:digitalcommons.usf.edu:msc_facpub-1940 2023-07-30T04:06:03+02:00 Non-Lethal Effects of Ocean Acidification on the Symbiont-Bearing Benthic Foraminifer Amphistegina gibbosa McIntyre-Wressnig, Anna Bernhard, Joan M. McCorkle, Daniel C. Hallock, Pamela 2013-01-01T08:00:00Z https://digitalcommons.usf.edu/msc_facpub/920 https://doi.org/10.3354/meps09918 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/920 doi:10.3354/meps09918 https://doi.org/10.3354/meps09918 Marine Science Faculty Publications calcite dissolution co2 coral reef florida keys symbiont loss Life Sciences article 2013 ftusouthflorida https://doi.org/10.3354/meps09918 2023-07-13T20:46:14Z The responses of marine taxa to ocean acidification are varied, with, for example, some exhibiting decreased and some increased calcification rates. Experiments were conducted to assess the effect of elevated atmospheric carbon dioxide concentrations on the survival, fitness, shell microfabric and growth of Amphistegina gibbosa, a symbiont-bearing, coral-reef dwelling, benthic foraminiferal species that precipitates low-Mg calcite tests, using CO2 partial pressure ( pCO2) levels similar to those likely to occur in shallow marine pore waters in the decades ahead. Specimens were cultured at constant temperature and controlled pCO2 (ambient, 1000 parts per million by volume [ppmv], and 2000 ppmv) for 6 wk, and total alkalinity and dissolved inorganic carbon were measured every 2 wk to characterize the carbonate chemistry of the incubations. Foraminiferal survival and cellular energy levels were assessed using adenosine triphosphate analyses, and test microstructure and growth were evaluated using high resolution scanning electron microscopy and image analysis. Fitness and survival were not directly affected by elevated pCO2 and the concomitant decrease in pH and calcite saturation states (Ωc). Test growth was not affected by elevated pCO2. However, areas of dissolution were observed after 6 wk, even though Ωc was greater than 1 in all treatments; the fraction of test area dissolved increased with decreasing Ωc. Test dissolution occurred only in small, well defined patches that appeared to be distributed randomly over the whole test surface. Similar dissolution was observed in offspring produced in the 2000 ppmv pCO2 treatments. The long-term ecological consequences of the effects observed are not yet known. Article in Journal/Newspaper Ocean acidification University of South Florida St. Petersburg: Digital USFSP Marine Ecology Progress Series 472 45 60 |
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Open Polar |
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University of South Florida St. Petersburg: Digital USFSP |
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ftusouthflorida |
language |
unknown |
topic |
calcite dissolution co2 coral reef florida keys symbiont loss Life Sciences |
spellingShingle |
calcite dissolution co2 coral reef florida keys symbiont loss Life Sciences McIntyre-Wressnig, Anna Bernhard, Joan M. McCorkle, Daniel C. Hallock, Pamela Non-Lethal Effects of Ocean Acidification on the Symbiont-Bearing Benthic Foraminifer Amphistegina gibbosa |
topic_facet |
calcite dissolution co2 coral reef florida keys symbiont loss Life Sciences |
description |
The responses of marine taxa to ocean acidification are varied, with, for example, some exhibiting decreased and some increased calcification rates. Experiments were conducted to assess the effect of elevated atmospheric carbon dioxide concentrations on the survival, fitness, shell microfabric and growth of Amphistegina gibbosa, a symbiont-bearing, coral-reef dwelling, benthic foraminiferal species that precipitates low-Mg calcite tests, using CO2 partial pressure ( pCO2) levels similar to those likely to occur in shallow marine pore waters in the decades ahead. Specimens were cultured at constant temperature and controlled pCO2 (ambient, 1000 parts per million by volume [ppmv], and 2000 ppmv) for 6 wk, and total alkalinity and dissolved inorganic carbon were measured every 2 wk to characterize the carbonate chemistry of the incubations. Foraminiferal survival and cellular energy levels were assessed using adenosine triphosphate analyses, and test microstructure and growth were evaluated using high resolution scanning electron microscopy and image analysis. Fitness and survival were not directly affected by elevated pCO2 and the concomitant decrease in pH and calcite saturation states (Ωc). Test growth was not affected by elevated pCO2. However, areas of dissolution were observed after 6 wk, even though Ωc was greater than 1 in all treatments; the fraction of test area dissolved increased with decreasing Ωc. Test dissolution occurred only in small, well defined patches that appeared to be distributed randomly over the whole test surface. Similar dissolution was observed in offspring produced in the 2000 ppmv pCO2 treatments. The long-term ecological consequences of the effects observed are not yet known. |
format |
Article in Journal/Newspaper |
author |
McIntyre-Wressnig, Anna Bernhard, Joan M. McCorkle, Daniel C. Hallock, Pamela |
author_facet |
McIntyre-Wressnig, Anna Bernhard, Joan M. McCorkle, Daniel C. Hallock, Pamela |
author_sort |
McIntyre-Wressnig, Anna |
title |
Non-Lethal Effects of Ocean Acidification on the Symbiont-Bearing Benthic Foraminifer Amphistegina gibbosa |
title_short |
Non-Lethal Effects of Ocean Acidification on the Symbiont-Bearing Benthic Foraminifer Amphistegina gibbosa |
title_full |
Non-Lethal Effects of Ocean Acidification on the Symbiont-Bearing Benthic Foraminifer Amphistegina gibbosa |
title_fullStr |
Non-Lethal Effects of Ocean Acidification on the Symbiont-Bearing Benthic Foraminifer Amphistegina gibbosa |
title_full_unstemmed |
Non-Lethal Effects of Ocean Acidification on the Symbiont-Bearing Benthic Foraminifer Amphistegina gibbosa |
title_sort |
non-lethal effects of ocean acidification on the symbiont-bearing benthic foraminifer amphistegina gibbosa |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2013 |
url |
https://digitalcommons.usf.edu/msc_facpub/920 https://doi.org/10.3354/meps09918 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/920 doi:10.3354/meps09918 https://doi.org/10.3354/meps09918 |
op_doi |
https://doi.org/10.3354/meps09918 |
container_title |
Marine Ecology Progress Series |
container_volume |
472 |
container_start_page |
45 |
op_container_end_page |
60 |
_version_ |
1772818420287406080 |