Heatwave responses of Arctic phytoplankton communities are driven by combined impacts of warming and cooling
Marine heatwaves are increasing in frequency and intensity as climate change progresses, especially in the highly productive Arctic regions. Although their effects on primary producers will largely determine the impacts on ecosystem services, mechanistic understanding on phytoplankton responses to s...
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ftzenodo:oai:zenodo.org:11100585 2024-09-09T19:23:00+00:00 Heatwave responses of Arctic phytoplankton communities are driven by combined impacts of warming and cooling Wolf, Klara Hoppe, Clara Rehder, Linda Schaum, Elisa John, Uwe Rost, Björn 2024-05-02 https://doi.org/10.5061/dryad.pk0p2ngwp unknown Zenodo https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.pk0p2ngwp oai:zenodo.org:11100585 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode experimental heatwave extreme events primary productivity spring bloom Ecophysiology Community ecology info:eu-repo/semantics/other 2024 ftzenodo https://doi.org/10.5061/dryad.pk0p2ngwp 2024-07-25T09:44:45Z Marine heatwaves are increasing in frequency and intensity as climate change progresses, especially in the highly productive Arctic regions. Although their effects on primary producers will largely determine the impacts on ecosystem services, mechanistic understanding on phytoplankton responses to such extreme events is still very limited. We experimentally exposed Arctic phytoplankton assemblages to stable warming, as well as to repeated heatwaves, and measured temporally resolved productivity, physiology and composition. Our results show that even extreme stable warming increases productivity, while the response to heatwaves depends on the specific scenario applied, and are not predictable from stable warming responses. This appears to be largely due to the underestimated impact of the cool phase following a heatwave, which can be at least as important as the warm phase for the overall response. We show that physiological and compositional adjustments to both, warm and cool phases drive overall phytoplankton productivity, and need to be considered mechanistically to predict overall ecosystem impacts. Funding provided by: Deutsche Forschungsgemeinschaft Crossref Funder Registry ID: https://ror.org/018mejw64 Award Number: WO2452/1-1 Funding provided by: Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100023690 Award Number: Funding provided by: Svalbard Science Forum Project Nr Award Number: 310723 We exposed natural spring communities from coastal Svalbard (Norway) for 2-3 weeks to stable temperature treatments (2°C, 6°C, 9°C), where 2°C acted as a control treatment, as well as to repeated 5-day heatwaves of differing intensity (6°C and 9°C, Figure 1). By excluding grazers and ensuring nutrient replete and stable light conditions, we focused on the effect of temperature only. To understand the dynamics and mechanisms during changing temperature regimes, we explicitly investigated the different phases of a heatwave towards ... Other/Unknown Material Arctic Climate change Phytoplankton Svalbard Zenodo Arctic Svalbard Norway |
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experimental heatwave extreme events primary productivity spring bloom Ecophysiology Community ecology |
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experimental heatwave extreme events primary productivity spring bloom Ecophysiology Community ecology Wolf, Klara Hoppe, Clara Rehder, Linda Schaum, Elisa John, Uwe Rost, Björn Heatwave responses of Arctic phytoplankton communities are driven by combined impacts of warming and cooling |
topic_facet |
experimental heatwave extreme events primary productivity spring bloom Ecophysiology Community ecology |
description |
Marine heatwaves are increasing in frequency and intensity as climate change progresses, especially in the highly productive Arctic regions. Although their effects on primary producers will largely determine the impacts on ecosystem services, mechanistic understanding on phytoplankton responses to such extreme events is still very limited. We experimentally exposed Arctic phytoplankton assemblages to stable warming, as well as to repeated heatwaves, and measured temporally resolved productivity, physiology and composition. Our results show that even extreme stable warming increases productivity, while the response to heatwaves depends on the specific scenario applied, and are not predictable from stable warming responses. This appears to be largely due to the underestimated impact of the cool phase following a heatwave, which can be at least as important as the warm phase for the overall response. We show that physiological and compositional adjustments to both, warm and cool phases drive overall phytoplankton productivity, and need to be considered mechanistically to predict overall ecosystem impacts. Funding provided by: Deutsche Forschungsgemeinschaft Crossref Funder Registry ID: https://ror.org/018mejw64 Award Number: WO2452/1-1 Funding provided by: Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100023690 Award Number: Funding provided by: Svalbard Science Forum Project Nr Award Number: 310723 We exposed natural spring communities from coastal Svalbard (Norway) for 2-3 weeks to stable temperature treatments (2°C, 6°C, 9°C), where 2°C acted as a control treatment, as well as to repeated 5-day heatwaves of differing intensity (6°C and 9°C, Figure 1). By excluding grazers and ensuring nutrient replete and stable light conditions, we focused on the effect of temperature only. To understand the dynamics and mechanisms during changing temperature regimes, we explicitly investigated the different phases of a heatwave towards ... |
format |
Other/Unknown Material |
author |
Wolf, Klara Hoppe, Clara Rehder, Linda Schaum, Elisa John, Uwe Rost, Björn |
author_facet |
Wolf, Klara Hoppe, Clara Rehder, Linda Schaum, Elisa John, Uwe Rost, Björn |
author_sort |
Wolf, Klara |
title |
Heatwave responses of Arctic phytoplankton communities are driven by combined impacts of warming and cooling |
title_short |
Heatwave responses of Arctic phytoplankton communities are driven by combined impacts of warming and cooling |
title_full |
Heatwave responses of Arctic phytoplankton communities are driven by combined impacts of warming and cooling |
title_fullStr |
Heatwave responses of Arctic phytoplankton communities are driven by combined impacts of warming and cooling |
title_full_unstemmed |
Heatwave responses of Arctic phytoplankton communities are driven by combined impacts of warming and cooling |
title_sort |
heatwave responses of arctic phytoplankton communities are driven by combined impacts of warming and cooling |
publisher |
Zenodo |
publishDate |
2024 |
url |
https://doi.org/10.5061/dryad.pk0p2ngwp |
geographic |
Arctic Svalbard Norway |
geographic_facet |
Arctic Svalbard Norway |
genre |
Arctic Climate change Phytoplankton Svalbard |
genre_facet |
Arctic Climate change Phytoplankton Svalbard |
op_relation |
https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.pk0p2ngwp oai:zenodo.org:11100585 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.pk0p2ngwp |
_version_ |
1809763349168128000 |