Evolutionary temperature compensation of carbon fixation in marine phytoplankton.
climate change
evolutionary ecology
metabolism
phytoplankton physiology
thermal performance curves
Journal
Ecology letters
ISSN: 1461-0248
Titre abrégé: Ecol Lett
Pays: England
ID NLM: 101121949
Informations de publication
Date de publication:
Apr 2020
Apr 2020
Historique:
received:
12
12
2019
accepted:
11
01
2020
pubmed:
15
2
2020
medline:
7
3
2020
entrez:
15
2
2020
Statut:
ppublish
Résumé
The efficiency of carbon sequestration by the biological pump could decline in the coming decades because respiration tends to increase more with temperature than photosynthesis. Despite these differences in the short-term temperature sensitivities of photosynthesis and respiration, it remains unknown whether the long-term impacts of global warming on metabolic rates of phytoplankton can be modulated by evolutionary adaptation. We found that respiration was consistently more temperature dependent than photosynthesis across 18 diverse marine phytoplankton, resulting in universal declines in the rate of carbon fixation with short-term increases in temperature. Long-term experimental evolution under high temperature reversed the short-term stimulation of metabolic rates, resulting in increased rates of carbon fixation. Our findings suggest that thermal adaptation may therefore have an ameliorating impact on the efficiency of phytoplankton as primary mediators of the biological carbon pump.
Identifiants
pubmed: 32059265
doi: 10.1111/ele.13469
pmc: PMC7078849
doi:
Substances chimiques
Carbon
7440-44-0
Types de publication
Letter
Langues
eng
Sous-ensembles de citation
IM
Pagination
722-733Subventions
Organisme : Leverhulme Trust
ID : RPG-2013-335
Organisme : University of Dundee
ID : 015069
Informations de copyright
© 2020 The Authors. Ecology Letters published by CNRS and John Wiley & Sons Ltd.
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