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Characterising landscape connectivity for conservation planning using a dispersal guild approach

Citation

Lechner, AM and Sprod, D and Carter, O and Lefroy, EC, Characterising landscape connectivity for conservation planning using a dispersal guild approach, Landscape Ecology, 32, (1) pp. 99-113. ISSN 1572-9761 (2017) [Refereed Article]

Copyright Statement

Copyright 2016 Springer Science+Business Media Dordrecht

DOI: doi:10.1007/s10980-016-0431-5

Abstract

Context: Land use changes have modified the extent and structure of native vegetation, resulting in fragmentation of native species habitat. Connectivity is increasingly seen as a requirement for effective conservation in these landscapes, but the question remains: ‘connectivity for which species?’.

Objective: The aim of this study was to develop and then apply a rapid, expert-based, dispersal guild approach where species are grouped on similar fine scale dispersal behaviour (such as between scattered trees) and habitat characteristics.

Methods: Dispersal guilds were identified using clustering techniques to compare dispersal and habitat parameters elicited from experts. We modelled least cost paths and corridors between patches and individual movement probabilities within these corridors for each of the dispersal guilds using Circuitscape. We demonstrate our approach with a case study in the Tasmanian Northern Midlands, Australia.

Results: The dispersal guild approach grouped the 12 species into five dispersal guilds. The connectivity modelling of those five guilds found that broadly dispersing species in this landscape, such as medium sized carnivorous mammals, were unaffected by fragmentation while from the perspective of the three dispersal guilds made up of smaller mammals, the landscape appeared highly fragmented.

Conclusions: Our approach yields biologically defensible outputs that are broadly applicable, particularly for conservation planning where data and resources are limited. It is a useful first step in multi-species conservation planning which aims to identify those species most in need of conservation efforts.

Item Details

Item Type:Refereed Article
Keywords:conservation biology, conservation planning, connectivity, dispersal, guilds, least-cost paths, landscape planning corridor, mammals, cluster analysis, multi-species model
Research Division:Environmental Sciences
Research Group:Ecological Applications
Research Field:Landscape Ecology
Objective Division:Environment
Objective Group:Ecosystem Assessment and Management
Objective Field:Ecosystem Assessment and Management at Regional or Larger Scales
Author:Lechner, AM (Dr Alex Lechner)
Author:Sprod, D (Mr Daniel Sprod)
Author:Lefroy, EC (Professor Ted Lefroy)
ID Code:111011
Year Published:2017 (online first 2016)
Web of Science® Times Cited:1
Deposited By:Centre for Environment
Deposited On:2016-08-25
Last Modified:2017-12-06
Downloads:0

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