Predicting Landscape-Genetic Consequences of Habitat Loss, Fragmentation and Mobility for Multiple Species of Woodland Birds

J. N. Amos, Andrew Bennett, Ralph MAC NALLY, Graeme Newell, Alexandra Pavlova, J. Q. Radford, Jim THOMSON, Matt White, Paul Sunnucks

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Inference concerning the impact of habitat fragmentation on dispersal and gene flow is a key theme in landscape genetics. Recently, the ability of established approaches to identify reliably the differential effects of landscape structure (e.g. landcover composition, remnant vegetation configuration and extent) on the mobility of organisms has been questioned. More explicit methods of predicting and testing for such effects must move beyond post hoc explanations for single landscapes and species. Here, we document a process for making a priori predictions, using existing spatial and ecological data and expert opinion, of the effects of landscape structure on genetic structure of multiple species across replicated landscape blocks. We compare the results of two common methods for estimating the influence of landscape structure on effective distance: least-cost path analysis and isolation-by-resistance. We present a series of alternative models of genetic connectivity in the study area, represented by different landscape resistance surfaces for calculating effective distance, and identify appropriate null models. The process is applied to ten species of sympatric woodland-dependant birds. For each species, we rank a priori the expectation of fit of genetic response to the models according to the expected response of birds to loss of structural connectivity and landscape-scale tree-cover. These rankings (our hypotheses) are presented for testing with empirical genetic data in a subsequent contribution. We propose that this replicated landscape, multi-species approach offers a robust method for identifying the likely effects of landscape fragmentation on dispersal.
Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalPLoS One
Volume7
Issue number2:e30888
DOIs
Publication statusPublished - 2012
Externally publishedYes

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Birds
habitat destruction
Ecosystem
woodlands
birds
Sympatry
Surface resistance
Gene Flow
Genetic Structures
Genetic Models
Expert Testimony
Testing
Genes
Costs and Cost Analysis
Chemical analysis
Forests
Costs
expert opinion
land cover
sympatry

Cite this

Amos, J. N. ; Bennett, Andrew ; MAC NALLY, Ralph ; Newell, Graeme ; Pavlova, Alexandra ; Radford, J. Q. ; THOMSON, Jim ; White, Matt ; Sunnucks, Paul. / Predicting Landscape-Genetic Consequences of Habitat Loss, Fragmentation and Mobility for Multiple Species of Woodland Birds. In: PLoS One. 2012 ; Vol. 7, No. 2:e30888. pp. 1-12.
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Amos, JN, Bennett, A, MAC NALLY, R, Newell, G, Pavlova, A, Radford, JQ, THOMSON, J, White, M & Sunnucks, P 2012, 'Predicting Landscape-Genetic Consequences of Habitat Loss, Fragmentation and Mobility for Multiple Species of Woodland Birds', PLoS One, vol. 7, no. 2:e30888, pp. 1-12. https://doi.org/10.1371/journal.pone.0030888

Predicting Landscape-Genetic Consequences of Habitat Loss, Fragmentation and Mobility for Multiple Species of Woodland Birds. / Amos, J. N.; Bennett, Andrew; MAC NALLY, Ralph; Newell, Graeme; Pavlova, Alexandra; Radford, J. Q.; THOMSON, Jim; White, Matt; Sunnucks, Paul.

In: PLoS One, Vol. 7, No. 2:e30888, 2012, p. 1-12.

Research output: Contribution to journalArticle

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