Data/hora: 11/06/2024 11:57:26

Provedor de dados: | 7
País: | Canada
Título: | Wildlife Tunnel Enhances Population Viability
Autores: | van der Ree, Rodney; Australian Research Centre for Urban Ecology, Royal Botanic Gardens Melbourne; rvdr@unimelb.edu.au; Heinze, Dean; Department of Primary Industries and Water; Dean.Heinze@dpiw.tas.gov.au; McCarthy, Michael; Australian Research Centre for Urban Ecology; mamcca@unimelb.edu.au; Mansergh, Ian; Department of Sustainability and Environment; ian.mansergh@dse.vic.gov.au.
Data: | 2009-07-31
Ano: | 2009
Palavras-chave: | Barrier effect; Burramys; Population-level impacts; Population viability analysis; Road ecology; Underpass; Wildlife crossing structure.
Resumo: | Roads and traffic are pervasive components of landscapes throughout the world: they cause wildlife mortality, disrupt animal movements, and increase the risk of extinction. Expensive engineering solutions, such as overpasses and tunnels, are increasingly being adopted to mitigate these effects. Although some species readily use such structures, their success in preventing population extinction remains unknown. Here, we use population viability modeling to assess the effectiveness of tunnels for the endangered Mountain Pygmy-possum (Burramys parvus) in Australia. The underpasses reduced, but did not completely remove, the negative effects of a road. The expected minimum population size of a &amp;#8220;reconnected&amp;#8221; population remained 15% lower than that of a comparable &amp;#8220;undivided&amp;#8221; population. We propose that the extent to which the risk of extinction decreases should be adopted as a measure of effectiveness of mitigation measures and that the use of population modeling become routine in these evaluations.
Tipo: | Peer-Reviewed Reports
Idioma: | Inglês
Identificador: | vol14/iss2/art7/
Editor: | Resilience Alliance
Formato: | text/html application/pdf
Fonte: | Ecology and Society; Vol. 14, No. 2 (2009)