Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Science. 2000 Dec 1;290(5497):1758-61.

Reinterpreting space, time lags, and functional responses in ecological models.

Author information

  • 1Department of Zoology, University of Cambridge, Downing Street, Cambridge CB2 3EJ, UK. matt@zoo.cam.ac.uk

Abstract

Natural enemy-victim interactions are of major applied importance and of fundamental interest to ecologists. A key question is what stabilizes these interactions, allowing the long-term coexistence of the two species. Three main theoretical explanations have been proposed: behavioral responses, time-dependent factors such as delayed density dependence, and spatial heterogeneity. Here, using the powerful moment-closure technique, we show a fundamental equivalence between these three elements. Limited movement by organisms is a ubiquitous feature of ecological systems, allowing spatial structure to develop; we show that the effects of this can be naturally described in terms of time lags or within-generation functional responses.

Comment in

PMID:
11099413
[PubMed - indexed for MEDLINE]
Free full text
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire
    Loading ...
    Write to the Help Desk