The University of Southampton
University of Southampton Institutional Repository

Habitat selection determines abundance, richness and species composition of beetles in aquatic communities

Habitat selection determines abundance, richness and species composition of beetles in aquatic communities
Habitat selection determines abundance, richness and species composition of beetles in aquatic communities
Distribution and abundance patterns at the community and metacommunity scale can result from two distinct mechanisms. Random dispersal followed by non-random, site-specific mortality (species sorting) is the dominant paradigm in community ecology, while habitat selection provides an alternative, largely unexplored, mechanism with different demographic consequences. Rather than differential mortality, habitat selection involves redistribution of individuals among habitat patches based on perceived rather than realized fitness, with perceptions driven by past selection. In particular, habitat preferences based on species composition can create distinct patterns of positive and negative covariance among species, generating more complex linkages among communities than with random dispersal models. In our experiments, the mere presence of predatory fishes, in the absence of any mortality, reduced abundance and species richness of aquatic beetles by up to 80% in comparison with the results from fishless controls. Beetle species' shared habitat preferences generated distinct patterns of species richness, species composition and total abundance, matching large-scale field patterns previously ascribed to random dispersal and differential mortality. Our results indicate that landscape-level patterns of distribution and species diversity can be driven to a large extent by habitat selection behaviour, a critical, but largely overlooked, mechanism of community and metacommunity assembly.
1744-9561
370-374
Binckley, C.A.
60e265d5-1763-4bbc-859e-5874de85458e
Resetarits, W.J.
6e485b5b-1114-4225-8b16-aa1904077319
Binckley, C.A.
60e265d5-1763-4bbc-859e-5874de85458e
Resetarits, W.J.
6e485b5b-1114-4225-8b16-aa1904077319

Binckley, C.A. and Resetarits, W.J. (2005) Habitat selection determines abundance, richness and species composition of beetles in aquatic communities. Biology Letters, 1 (3), 370-374. (doi:10.1098/rsbl.2005.0310).

Record type: Article

Abstract

Distribution and abundance patterns at the community and metacommunity scale can result from two distinct mechanisms. Random dispersal followed by non-random, site-specific mortality (species sorting) is the dominant paradigm in community ecology, while habitat selection provides an alternative, largely unexplored, mechanism with different demographic consequences. Rather than differential mortality, habitat selection involves redistribution of individuals among habitat patches based on perceived rather than realized fitness, with perceptions driven by past selection. In particular, habitat preferences based on species composition can create distinct patterns of positive and negative covariance among species, generating more complex linkages among communities than with random dispersal models. In our experiments, the mere presence of predatory fishes, in the absence of any mortality, reduced abundance and species richness of aquatic beetles by up to 80% in comparison with the results from fishless controls. Beetle species' shared habitat preferences generated distinct patterns of species richness, species composition and total abundance, matching large-scale field patterns previously ascribed to random dispersal and differential mortality. Our results indicate that landscape-level patterns of distribution and species diversity can be driven to a large extent by habitat selection behaviour, a critical, but largely overlooked, mechanism of community and metacommunity assembly.

Full text not available from this repository.

More information

Published date: 1 September 2005

Identifiers

Local EPrints ID: 56181
URI: https://eprints.soton.ac.uk/id/eprint/56181
ISSN: 1744-9561
PURE UUID: 4af0529b-6bee-48f2-8e60-ed4ebb4fee1a

Catalogue record

Date deposited: 06 Aug 2008
Last modified: 17 Jul 2017 14:31

Export record

Altmetrics

Contributors

Author: C.A. Binckley
Author: W.J. Resetarits

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×