Open systems in community ecology: dispersal, diversity, and ecosystem properties

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  • March 22, 2019
Creator
  • Lee, Sarah Christine
    • Affiliation: College of Arts and Sciences, Department of Marine Sciences
Abstract
  • A large fraction of community ecology has focused on processes that operate within communities to control species richness; however, most natural localities are open to dispersal. Dispersal can mediate community structure and functioning by introducing novel species and promoting coexistence at multiple spatial scales. Using experiments, I tested the effects of dispersal in complex, multi-trophic communities. Results suggest that dispersal of novel species is an important determinant of species richness, community composition and ecosystem properties across a range of environmental conditions. Dispersal also promoted coexistence in a network of communities with different environmental conditions, possibly by subsidizing failing populations with individuals of successful populations. Together, these results broaden our understanding of community and ecosystem-level effects of dispersal beyond terrestrial plant communities and highlight mechanisms of coexistence that may be unique to mobile animals.
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  • In Copyright
Advisor
  • Bruno, John
Degree granting institution
  • University of North Carolina at Chapel Hill
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  • Open access
Date uploaded
  • October 11, 2010

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