A5092047285- Physiological and biochemical adaptations
- Marine and coastal ecosystems
- Ocean Acidification Effects and Responses
- Marine Biology and Ecology Research
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung
2023-2024
University of Bremen
2023
Marine heatwaves are increasing in frequency and intensity as climate change progresses, especially the highly productive Arctic regions. Although their effects on primary producers will largely determine impacts ecosystem services, mechanistic understanding phytoplankton responses to these extreme events is still very limited. We experimentally exposed assemblages stable warming, well repeated heatwaves, measured temporally resolved productivity, physiology, composition. Our results show...
Summary Growth rates and other biomass traits of phytoplankton are strongly affected by temperature. We hypothesized that resulting phenotypes originate from deviating temperature sensitivities underlying physiological processes. used membrane‐inlet mass spectrometry to assess photosynthetic respiratory O 2 CO fluxes in response abrupt changes as well after acclimation periods the diatom Phaeodactylum tricornutum . Abrupt caused immediate over‐ or undershoots most processes, is, oxygen...
Abstract Ocean warming is especially pronounced in the Arctic, and phytoplankton will face thermodynamically driven changes their physiology, potentially pushing them beyond thermal optimum. We assessed temperature responses of multiple functional traits over entire window (growth rates, quotas particulate organic carbon, nitrogen, chlorophyll a , as well photophysiological parameters) three different Arctic species ( Thalassiosira hyalina Micromonas pusilla Nitzschia frigida ). Temperature...