Interactions between temperature and nutrients determine the population dynamics of primary producers.
Droop model
carrying capacity
nutrient limitation
phytoplankton
population dynamics
theoretical ecology
thermal performance
Journal
Ecology letters
ISSN: 1461-0248
Titre abrégé: Ecol Lett
Pays: England
ID NLM: 101121949
Informations de publication
Date de publication:
18 Jan 2024
18 Jan 2024
Historique:
revised:
08
12
2023
received:
19
09
2023
accepted:
12
12
2023
medline:
18
1
2024
pubmed:
18
1
2024
entrez:
18
1
2024
Statut:
aheadofprint
Résumé
Global change is rapidly and fundamentally altering many of the processes regulating the flux of energy throughout ecosystems, and although researchers now understand the effect of temperature on key rates (such as aquatic primary productivity), the theoretical foundation needed to generate forecasts of biomass dynamics and extinction risk remains underdeveloped. We develop new theory that describes the interconnected effects of nutrients and temperature on phytoplankton populations and show that the thermal response of equilibrium biomass (i.e. carrying capacity) always peaks at a lower temperature than for productivity (i.e. growth rate). This mismatch is driven by differences in the thermal responses of growth, death, and per-capita impact on the nutrient pool, making our results highly general and applicable to widely used population models beyond phytoplankton. We further show that non-equilibrium dynamics depend on the pace of environmental change relative to underlying vital rates and that populations respond to variable environments differently at high versus low temperatures due to thermal asymmetries.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
e14363Subventions
Organisme : Yale Center for Natural Carbon Capture
Organisme : Natural Sciences and Engineering Research Council of Canada
Informations de copyright
© 2024 John Wiley & Sons Ltd.
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