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Evolutionary temperature compensation of carbon fixation in marine phytoplankton.
Barton, Samuel; Jenkins, James; Buckling, Angus; Schaum, C-Elisa; Smirnoff, Nicholas; Raven, John A; Yvon-Durocher, Gabriel.
Afiliación
  • Barton S; Environment and Sustainability Institute, University of Exeter, Penryn Campus, Penryn, Cornwall, TR10 9FE, UK.
  • Jenkins J; Environment and Sustainability Institute, University of Exeter, Penryn Campus, Penryn, Cornwall, TR10 9FE, UK.
  • Buckling A; Environment and Sustainability Institute, University of Exeter, Penryn Campus, Penryn, Cornwall, TR10 9FE, UK.
  • Schaum CE; Institute for Hydrobiology and Fisheries, Section Oceanography, Hamburg University, 22767, Hamburg, Germany.
  • Smirnoff N; Biosciences, College of Life and Environmental Sciences, Geoffrey Pope Building University of Exeter, Exeter, EX4 4QD, UK.
  • Raven JA; Division of Plant Science, University of Dundee at the James Hutton Institute, Invergowrie, Dundee, DD2 5DA, UK.
  • Yvon-Durocher G; Climate Change Cluster, University of Technology Sydney, Ultimo, NSW, 2007, Australia.
Ecol Lett ; 23(4): 722-733, 2020 Apr.
Article en En | MEDLINE | ID: mdl-32059265
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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fitoplancton / Calentamiento Global Idioma: En Revista: Ecol Lett Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fitoplancton / Calentamiento Global Idioma: En Revista: Ecol Lett Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido