Complex responses of intertidal molluscan embryos to a warming and acidifying ocean in the presence of UV radiation
Climate change and ocean acidification will expose marine organisms to synchronous multiple stressors, with early life stages being potentially most vulnerable to changing environmental conditions. We simultaneously exposed encapsulated molluscan embryos to three abiotic stressors—acidified conditio...
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ftunivwollongong:oai:ro.uow.edu.au:smhpapers-1136 2023-05-15T17:51:38+02:00 Complex responses of intertidal molluscan embryos to a warming and acidifying ocean in the presence of UV radiation Davis, Andrew R Coleman, Daniel Broad, Alison Byrne, Maria Dworjanyn, Symon A Przeslawski, Rachel 2013-01-01T08:00:00Z application/pdf https://ro.uow.edu.au/smhpapers/137 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=1136&context=smhpapers unknown Research Online https://ro.uow.edu.au/smhpapers/137 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=1136&context=smhpapers Faculty of Science, Medicine and Health - Papers: part A ocean presence uv complex radiation responses intertidal molluscan embryos warming acidifying Medicine and Health Sciences Social and Behavioral Sciences article 2013 ftunivwollongong 2020-02-25T10:49:59Z Climate change and ocean acidification will expose marine organisms to synchronous multiple stressors, with early life stages being potentially most vulnerable to changing environmental conditions. We simultaneously exposed encapsulated molluscan embryos to three abiotic stressors—acidified conditions, elevated temperate, and solar UV radiation in large outdoor water tables in a multifactorial design. Solar UV radiation was modified with plastic filters, while levels of the other factors reflected IPCC predictions for near-future change. We quantified mortality and the rate of embryonic development for a mid-shore littorinid, Bembicium nanum, and low-shore opisthobranch, Dolabrifera brazieri. Outcomes were consistent for these model species with embryos faring significantly better at 26uC than 22uC. Mortality sharply increased at the lowest temperature (22uC) and lowest pH (7.6) examined, producing a significant interaction. Under these conditions mortality approached 100% for each species, representing a 2- to 4-fold increase in mortality relative to warm (26uC) non-acidified conditions. Predictably, development was more rapid at the highest temperature but this again interacted with acidified conditions. Development was slowed under acidified conditions at the lowest temperature. The presence of UV radiation had minimal impact on the outcomes, only slowing development for the littorinid and not interacting with the other factors. Our findings suggest that a warming ocean, at least to a threshold, may compensate for the effects of decreasing pH for some species. It also appears that stressors will interact in complex and unpredictable ways in a changing climate. Article in Journal/Newspaper Ocean acidification University of Wollongong, Australia: Research Online |
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Open Polar |
collection |
University of Wollongong, Australia: Research Online |
op_collection_id |
ftunivwollongong |
language |
unknown |
topic |
ocean presence uv complex radiation responses intertidal molluscan embryos warming acidifying Medicine and Health Sciences Social and Behavioral Sciences |
spellingShingle |
ocean presence uv complex radiation responses intertidal molluscan embryos warming acidifying Medicine and Health Sciences Social and Behavioral Sciences Davis, Andrew R Coleman, Daniel Broad, Alison Byrne, Maria Dworjanyn, Symon A Przeslawski, Rachel Complex responses of intertidal molluscan embryos to a warming and acidifying ocean in the presence of UV radiation |
topic_facet |
ocean presence uv complex radiation responses intertidal molluscan embryos warming acidifying Medicine and Health Sciences Social and Behavioral Sciences |
description |
Climate change and ocean acidification will expose marine organisms to synchronous multiple stressors, with early life stages being potentially most vulnerable to changing environmental conditions. We simultaneously exposed encapsulated molluscan embryos to three abiotic stressors—acidified conditions, elevated temperate, and solar UV radiation in large outdoor water tables in a multifactorial design. Solar UV radiation was modified with plastic filters, while levels of the other factors reflected IPCC predictions for near-future change. We quantified mortality and the rate of embryonic development for a mid-shore littorinid, Bembicium nanum, and low-shore opisthobranch, Dolabrifera brazieri. Outcomes were consistent for these model species with embryos faring significantly better at 26uC than 22uC. Mortality sharply increased at the lowest temperature (22uC) and lowest pH (7.6) examined, producing a significant interaction. Under these conditions mortality approached 100% for each species, representing a 2- to 4-fold increase in mortality relative to warm (26uC) non-acidified conditions. Predictably, development was more rapid at the highest temperature but this again interacted with acidified conditions. Development was slowed under acidified conditions at the lowest temperature. The presence of UV radiation had minimal impact on the outcomes, only slowing development for the littorinid and not interacting with the other factors. Our findings suggest that a warming ocean, at least to a threshold, may compensate for the effects of decreasing pH for some species. It also appears that stressors will interact in complex and unpredictable ways in a changing climate. |
format |
Article in Journal/Newspaper |
author |
Davis, Andrew R Coleman, Daniel Broad, Alison Byrne, Maria Dworjanyn, Symon A Przeslawski, Rachel |
author_facet |
Davis, Andrew R Coleman, Daniel Broad, Alison Byrne, Maria Dworjanyn, Symon A Przeslawski, Rachel |
author_sort |
Davis, Andrew R |
title |
Complex responses of intertidal molluscan embryos to a warming and acidifying ocean in the presence of UV radiation |
title_short |
Complex responses of intertidal molluscan embryos to a warming and acidifying ocean in the presence of UV radiation |
title_full |
Complex responses of intertidal molluscan embryos to a warming and acidifying ocean in the presence of UV radiation |
title_fullStr |
Complex responses of intertidal molluscan embryos to a warming and acidifying ocean in the presence of UV radiation |
title_full_unstemmed |
Complex responses of intertidal molluscan embryos to a warming and acidifying ocean in the presence of UV radiation |
title_sort |
complex responses of intertidal molluscan embryos to a warming and acidifying ocean in the presence of uv radiation |
publisher |
Research Online |
publishDate |
2013 |
url |
https://ro.uow.edu.au/smhpapers/137 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=1136&context=smhpapers |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Faculty of Science, Medicine and Health - Papers: part A |
op_relation |
https://ro.uow.edu.au/smhpapers/137 https://ro.uow.edu.au/cgi/viewcontent.cgi?article=1136&context=smhpapers |
_version_ |
1766158847696699392 |