|
|
|
|
|
| Clevenger, Anthony P; Western Transportation Institute, Montana State University; apclevenger@gmail.com; Sawaya, Michael A; Department of Ecology, Montana State University; mikesawaya@hotmail.com. |
| Intuitively, wildlife crossing structures should enhance the viability of wildlife populations. Previous research has demonstrated that a broad range of species will use crossing structures, however, questions remain as to whether these measures actually provide benefits to populations. To assess this, studies will need to determine the number of individuals using crossings, their sex, and their genetic relationships. Obtaining empirical data demonstrating population-level benefits for some species can be problematic and challenging at best. Molecular techniques now make it possible to identify species, individuals, their sex, and their genetic relatedness from hair samples collected through non-invasive genetic sampling (NGS). We describe efforts to pilot... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Banff National Park; DNA; Genetics; Non-invasive; Road ecology; Ursus americanus; Ursus arctos; Wildlife crossing structure. |
| Ano: 2010 |
|
| |
|
|
| 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. |
| 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 “reconnected” population remained 15% lower... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Barrier effect; Burramys; Population-level impacts; Population viability analysis; Road ecology; Underpass; Wildlife crossing structure. |
| Ano: 2009 |
|
| |
|
|
|
