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Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems
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Published on: July 30, 2019

Linking community size structure and ecosystem functioning using metabolic theory.

Gabriel Yvon-Durocher1, Andrew P Allen

  • 1School of Biological and Chemical Sciences, Queen Mary University of London, London E1 4NS, UK. g.yvon-durocher@exeter.ac.uk

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|September 26, 2012
PubMed
Summary
This summary is machine-generated.

Ecological community structure, particularly body size, significantly influences ecosystem functions like carbon cycling. Environmental warming affects these relationships, impacting ecosystem metabolism and biogeochemical processes.

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Area of Science:

  • Ecology
  • Ecosystem Science
  • Biogeochemistry

Background:

  • Understanding the link between ecological community structure and biogeochemical cycles is crucial.
  • Body size is a key species trait influencing community structure and ecosystem functioning.
  • Metabolic theory provides a framework for predicting how temperature affects biological processes.

Purpose of the Study:

  • To investigate the relationship between community size structure and ecosystem metabolism.
  • To assess the impact of environmental warming on these relationships.
  • To test predictions of metabolic theory using experimental data.

Main Methods:

  • An aquatic mesocosm experiment simulating future environmental warming was conducted.
  • Data on ecosystem metabolism and community size structure were collected.
  • Analyses focused on carbon fluxes, seasonal temperature variation, and annual time-scales.

Main Results:

  • Significant linkages were found between community size structure and ecosystem functioning.
  • Carbon fluxes were strongly influenced by seasonal temperature variations.
  • Community size structure significantly affected ecosystem respiration and gross primary production.

Conclusions:

  • Body size structure is a key determinant of ecosystem functioning and biogeochemical cycles.
  • Environmental warming alters the relationship between community structure and ecosystem processes.
  • Assessing body size structure aids in predicting ecosystem responses to climate change.