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Metabolic traits predict the effects of warming on phytoplankton competition

View ORCID ProfileElvire Bestion, Bernardo Garcia-Carreras, Charlotte-Elisa Schaum, Samraat Pawar, Gabriel Yvon-Durocher
doi: https://doi.org/10.1101/227868
Elvire Bestion
1Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall TR10 9EZ, UK
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  • ORCID record for Elvire Bestion
Bernardo Garcia-Carreras
2Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, Berkshire,SL5 7PY, UK
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Charlotte-Elisa Schaum
1Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall TR10 9EZ, UK
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Samraat Pawar
2Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, Berkshire,SL5 7PY, UK
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  • For correspondence: g.yvon-durocher@exeter.ac.uk s.pawar@imperial.ac.uk
Gabriel Yvon-Durocher
1Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall TR10 9EZ, UK
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  • For correspondence: g.yvon-durocher@exeter.ac.uk s.pawar@imperial.ac.uk
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ABSTRACT

Understanding how changes in temperature affect interspecific competition is critical for predicting changes in ecological communities as the climate warms. Here we develop a simple theoretical model that links interspecific differences in metabolic traits, which capture the temperature-dependence of resource acquisition, to the outcome of pairwise competition in phytoplankton. We parameterised our model with metabolic traits derived from six species of freshwater phytoplankton and tested its ability to predict the outcome of competition in all pairwise combinations of the species in a factorial experiment, manipulating temperature and nutrient availability. The model correctly predicted the outcome of competition in 71% of the pairwise experiments. These results demonstrate that metabolic traits play a key role in determining how changes in temperature influence interspecific competition and lay the foundation for developing theory to predict the effects of warming in complex, multi-species communities.

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Posted December 03, 2017.
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Metabolic traits predict the effects of warming on phytoplankton competition
Elvire Bestion, Bernardo Garcia-Carreras, Charlotte-Elisa Schaum, Samraat Pawar, Gabriel Yvon-Durocher
bioRxiv 227868; doi: https://doi.org/10.1101/227868
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Metabolic traits predict the effects of warming on phytoplankton competition
Elvire Bestion, Bernardo Garcia-Carreras, Charlotte-Elisa Schaum, Samraat Pawar, Gabriel Yvon-Durocher
bioRxiv 227868; doi: https://doi.org/10.1101/227868

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