Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water
Ocean acidification (OA) is expected to negatively affect many ecologically important organisms. Here we report the response of Caribbean benthic foraminiferal assemblages to naturally discharging low-pH waters with a composition similar to that expected for the end of the 21st century. At low pH ∼...
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ftdoajarticles:oai:doaj.org/article:955f60872e9145318ad836fc795cea88 2023-05-15T17:51:25+02:00 Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water D. François A. Paytan O. M. O. de Araújo R. T. Lopes C. F. Barbosa 2022-11-01T00:00:00Z https://doi.org/10.5194/bg-19-5269-2022 https://doaj.org/article/955f60872e9145318ad836fc795cea88 EN eng Copernicus Publications https://bg.copernicus.org/articles/19/5269/2022/bg-19-5269-2022.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-19-5269-2022 1726-4170 1726-4189 https://doaj.org/article/955f60872e9145318ad836fc795cea88 Biogeosciences, Vol 19, Pp 5269-5285 (2022) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.5194/bg-19-5269-2022 2022-12-30T21:15:48Z Ocean acidification (OA) is expected to negatively affect many ecologically important organisms. Here we report the response of Caribbean benthic foraminiferal assemblages to naturally discharging low-pH waters with a composition similar to that expected for the end of the 21st century. At low pH ∼ 7.8 and low saturation state with respect to calcite ( Ω calcite < 4 ), the relative abundance of hyaline, agglutinated, and symbiont-bearing species increased, indicating higher resistance to potential carbonate chemistry changes. Diversity and other taxonomical metrics (i.e., richness, abundance, and evenness) declined steeply with decreasing pH despite exposure of this ecosystem to low-pH conditions for millennia, suggesting that tropical foraminiferal communities will be negatively impacted under acidification scenarios SSP3-7.0 (Shared Socioeconomic Pathways) and SSP5-8.5. The species Archaias angulatus , a major contributor to sediment production in the Caribbean, was able to calcify at more extreme conditions (7.1 pH) than those projected for the late 21st century, but the calcified tests had a lower average density than those exposed to higher-pH conditions (7.96), indicating that reef foraminiferal carbonate production might decrease this century. Smaller foraminifera were particularly sensitive to low pH, and our results demonstrate their potential use to monitor OA conditions. Article in Journal/Newspaper Ocean acidification Directory of Open Access Journals: DOAJ Articles Biogeosciences 19 22 5269 5285 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
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Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 D. François A. Paytan O. M. O. de Araújo R. T. Lopes C. F. Barbosa Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Ocean acidification (OA) is expected to negatively affect many ecologically important organisms. Here we report the response of Caribbean benthic foraminiferal assemblages to naturally discharging low-pH waters with a composition similar to that expected for the end of the 21st century. At low pH ∼ 7.8 and low saturation state with respect to calcite ( Ω calcite < 4 ), the relative abundance of hyaline, agglutinated, and symbiont-bearing species increased, indicating higher resistance to potential carbonate chemistry changes. Diversity and other taxonomical metrics (i.e., richness, abundance, and evenness) declined steeply with decreasing pH despite exposure of this ecosystem to low-pH conditions for millennia, suggesting that tropical foraminiferal communities will be negatively impacted under acidification scenarios SSP3-7.0 (Shared Socioeconomic Pathways) and SSP5-8.5. The species Archaias angulatus , a major contributor to sediment production in the Caribbean, was able to calcify at more extreme conditions (7.1 pH) than those projected for the late 21st century, but the calcified tests had a lower average density than those exposed to higher-pH conditions (7.96), indicating that reef foraminiferal carbonate production might decrease this century. Smaller foraminifera were particularly sensitive to low pH, and our results demonstrate their potential use to monitor OA conditions. |
format |
Article in Journal/Newspaper |
author |
D. François A. Paytan O. M. O. de Araújo R. T. Lopes C. F. Barbosa |
author_facet |
D. François A. Paytan O. M. O. de Araújo R. T. Lopes C. F. Barbosa |
author_sort |
D. François |
title |
Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water |
title_short |
Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water |
title_full |
Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water |
title_fullStr |
Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water |
title_full_unstemmed |
Acidification impacts and acclimation potential of Caribbean benthic foraminifera assemblages in naturally discharging low-pH water |
title_sort |
acidification impacts and acclimation potential of caribbean benthic foraminifera assemblages in naturally discharging low-ph water |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/bg-19-5269-2022 https://doaj.org/article/955f60872e9145318ad836fc795cea88 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biogeosciences, Vol 19, Pp 5269-5285 (2022) |
op_relation |
https://bg.copernicus.org/articles/19/5269/2022/bg-19-5269-2022.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-19-5269-2022 1726-4170 1726-4189 https://doaj.org/article/955f60872e9145318ad836fc795cea88 |
op_doi |
https://doi.org/10.5194/bg-19-5269-2022 |
container_title |
Biogeosciences |
container_volume |
19 |
container_issue |
22 |
container_start_page |
5269 |
op_container_end_page |
5285 |
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1766158556815425536 |