Response of the sea star Asterias rubens to heat stress and ocean acidification: long-term and short-term experimental data


Robust estimates of marine species vulnerability to ongoing climate change require realistic stressor experiments. Here, we subjected an important coastal predator, the sea star Asterias rubens, to projected warming and ocean acidification over an annual seasonal cycle. Warming and, less so, acidification, had strongly season-specific impacts on animal energy budgets. Specifically, simulated future summer temperatures caused >95% sea star mortality, reduced feeding rate and body mass loss. Additional acute experiments demonstrated that respiratory oxygen flux was preferentially directed to support high summer metabolism at the expense of feeding-related processes. Using 15 years of field temperature data and end of century warming projections, we estimate that potentially lethal summer heat waves will occur in 20% of future years. Our study demonstrates the importance of assessing stress responses along seasonal thermal cycles and the high selective force that future summer heat waves likely can exert on coastal marine animal populations.

Metadata Access
Creator Melzner, Frank ; Findeisen, Ulrike; Bock, Christian ; Panknin, Ulrike; Kiko, Rainer ; Hiebenthal, Claas ; Lenz, Mark; Wall, Marlene
Publisher PANGAEA
Publication Year 2022
Funding Reference German Research Foundation Crossref Funder ID 27542298 Climate - Biogeochemistry Interactions in the Tropical Ocean; German Research Foundation Crossref Funder ID EXC 80 The Future Ocean; Seventh Framework Programme Crossref Funder ID 265847 Sub-seabed CO2 Storage: Impact on Marine Ecosystems
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Language English
Resource Type Bundled Publication of Datasets; Collection
Format application/zip
Size 10 datasets
Discipline Biogeochemistry; Biospheric Sciences; Geosciences; Natural Sciences
Temporal Coverage Begin 2015-09-08T00:00:00Z
Temporal Coverage End 2019-08-20T00:00:00Z