Melzner, Frank; Findeisen, Ulrike; Bock, Christian; Panknin, Ulrike; Kiko, Rainer; Hiebenthal, Claas; Lenz, Mark; Wall, Marlene (2022): Experiment on the response of the sea star Asterias rubens to heat stress and ocean acidification: experiment 2: A. rubens oxygen diffusion gradients [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.949414, In: Melzner, F et al. (2022): Response of the sea star Asterias rubens to heat stress and ocean acidification: long-term and short-term experimental data [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.949426
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Abstract:
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.
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 27542298: Climate - Biogeochemistry Interactions in the Tropical Ocean
Seventh Framework Programme (FP7), grant/award no. 265847: Sub-seabed CO2 Storage: Impact on Marine Ecosystems
Coverage:
Date/Time Start: 2015-09-08T00:00:00 * Date/Time End: 2015-09-18T00:00:00
Comment:
Figure 2a
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Experiment | Exp | Melzner, Frank | |||
| 2 | DATE/TIME | Date/Time | Melzner, Frank | Geocode – sampling | ||
| 3 | Replicate | Repl | Melzner, Frank | |||
| 4 | Temperature, water | Temp | °C | Melzner, Frank | seawater | |
| 5 | Salinity | Sal | Melzner, Frank | seawater | ||
| 6 | Oxygen, partial pressure | pO2 | kPa | Melzner, Frank | seawater | |
| 7 | Δ oxygen, partial pressure | ΔpO2 | kPa | Melzner, Frank | sw-cf: seawater oxygen partial pressure minus coelomic fluid oxygen partial pressure |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
240 data points