Species dispersal and biodiversity in human-dominated metacommunities

David W. Shanafelt, Jean Clobert, Eli P. Fenichel, Michael E. Hochberg, Ann Kinzig, Michel Loreau, Pablo A. Marquet, Charles Perrings

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The concept of the Anthropocene is based on the idea that human impacts are now the primary drivers of changes in the earth's systems, including ecological systems. In many cases, the behavior that causes ecosystem change is itself triggered by ecological factors. Yet most ecological models still treat human impacts as given, and frequently as constant. This undermines our ability to understand the feedbacks between human behavior and ecosystem change. Focusing on the problem of species dispersal, we evaluate the effect of dispersal on biodiversity in a system subject to predation by humans. People are assumed to obtain benefits from (a) the direct consumption of species (provisioning services), (b) the non-consumptive use of species (cultural services), and (c) the buffering effects of the mix of species (regulating services). We find that the effects of dispersal on biodiversity depend jointly on the competitive interactions among species, and on human preferences over species and the services they provide. We find that while biodiversity may be greatest at intermediate levels of dispersal, this depends on structure of preferences across the metacommunity.

Original languageEnglish (US)
Pages (from-to)199-210
Number of pages12
JournalJournal of Theoretical Biology
Volume457
DOIs
StatePublished - Nov 14 2018

Keywords

  • Biodiversity
  • Bioeconomics
  • Dispersal
  • Non-consumptive benefits
  • Spatial insurance

ASJC Scopus subject areas

  • Statistics and Probability
  • Modeling and Simulation
  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Agricultural and Biological Sciences(all)
  • Applied Mathematics

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