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Habitat selection in a reintroduced population: social effects differ between natal and post‐release dispersal

Habitat selection in a reintroduced population: social effects differ between natal and... Understanding the factors driving dispersal behaviour and habitat selection in reintroduced populations can be critical to reintroduction success. Social factors in particular can influence habitat selection, for example through conspecific attraction, and this can have both positive and negative effects on reintroduction success, particularly where multiple releases occur. In addition, little is known about how habitat selection differs between natal and post‐release dispersal within species. Often it is assumed that information from a species’ natal dispersal preferences and patterns can act as a guide for predicting post‐release dispersal behaviour, but no studies to date have examined this. We examine the factors influencing habitat selection during both natal and post‐release dispersal in a reintroduced hihi (stitchbird, Notiomystis cincta) population using species distribution models. We demonstrate a strong social effect in habitat selection of natal dispersers bred at the release area (largely the offspring of founders), yet find no social effect in habitat selection of juveniles translocated 2 years after the first releases occurred. In addition, we establish that environmental variables are important in habitat selection in both groups. We suggest (1) that consideration of social effects and conspecific attraction should play a role in planning reintroduction release strategies, especially if reinforcement releases are considered necessary, and (2) that it may not always be appropriate to assume post‐release dispersal in reintroduced populations will be driven by the same factors that influence natal dispersal. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Animal Conservation Wiley

Habitat selection in a reintroduced population: social effects differ between natal and post‐release dispersal

Richardson, K. M.; Ewen, J. G.
Animal Conservation , Volume 19 (5) – Oct 1, 2016
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References (47)

Publisher
Wiley
Copyright
Copyright © 2016 The Zoological Society of London
ISSN
1367-9430
eISSN
1469-1795
DOI
10.1111/acv.12257
Publisher site
See Article on Publisher Site

Abstract

Understanding the factors driving dispersal behaviour and habitat selection in reintroduced populations can be critical to reintroduction success. Social factors in particular can influence habitat selection, for example through conspecific attraction, and this can have both positive and negative effects on reintroduction success, particularly where multiple releases occur. In addition, little is known about how habitat selection differs between natal and post‐release dispersal within species. Often it is assumed that information from a species’ natal dispersal preferences and patterns can act as a guide for predicting post‐release dispersal behaviour, but no studies to date have examined this. We examine the factors influencing habitat selection during both natal and post‐release dispersal in a reintroduced hihi (stitchbird, Notiomystis cincta) population using species distribution models. We demonstrate a strong social effect in habitat selection of natal dispersers bred at the release area (largely the offspring of founders), yet find no social effect in habitat selection of juveniles translocated 2 years after the first releases occurred. In addition, we establish that environmental variables are important in habitat selection in both groups. We suggest (1) that consideration of social effects and conspecific attraction should play a role in planning reintroduction release strategies, especially if reinforcement releases are considered necessary, and (2) that it may not always be appropriate to assume post‐release dispersal in reintroduced populations will be driven by the same factors that influence natal dispersal.

Journal

Animal Conservation – Wiley

Published: Oct 1, 2016

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