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| Jensen, Thomas Secher; Hansen, Tine Sussi; Olsen, Kent. |
| Habitat fragmentation, the process by which relatively continuous habitats is broken into smaller pieces, occurs in natural systems but is to a high degree also human-induced through landscape use. Fragmentation of the landscape produces a series of habitat patches surrounded by a matrix of different habitats and land use regimes. The major landscape consequences of fragmentation are loss of habitat, reduction in habitat patch size, and increasing isolation of habitat patches. In general, population performance declines in response to habitat loss but size of remaining area and isolation effects is known also to influence the population trend. Small mammals are well suited for examination of population responses to habitat fragmentation as they have... |
| Tipo: Working paper |
Palavras-chave: Farming Systems; Environmental aspects; Knowledge management. |
| Ano: 2011 |
URL: http://orgprints.org/19072/7/19072.pdf |
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| Jensen, Thomas Secher; Olsen, Kent; Hansen, Tine Sussi; Vedel-Smith, Christina. |
| During 2008-2011 field voles (Microtus agrestis) were studied in a Danish agro-ecosystem in connection with a programme elucidating the role of organic farming as refuge for biodiversity, due to the observed biodiversity losses in conventional farmland. The aim of the study was to quantify home ranges and movements of voles in order to test a hypothesis that vole populations living in organic farm could colonize unoccupied areas in conventional farms. Voles were radiocollared and tracked until death or disappearance. Results showed that vole home-ranges were larger during onset of the breeding season than during the height of the breeding season and the non-breeding period. Males had larger home ranges than females. Voles occupying isolated small... |
| Tipo: Journal paper |
Palavras-chave: "Organics" in general; Farming Systems; Environmental aspects. |
| Ano: 2012 |
URL: http://orgprints.org/19073/7/19073.pdf |
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| Jensen, Thomas Secher; Hansen, Tine Sussi; Olsen, Kent. |
| Habitat fragmentation, the process by which relatively continuous habitats is broken into smaller pieces, occurs in natural systems but is to a high degree also human- induced through landscape use. Fragmentation of the landscape produces a series of habitat patches surrounded by a matrix of different habitats and/or land use regimes. The major landscape consequences of fragmentation are loss of habitat, reduction in habitat patch size, and increasing isolation of habitat patches. In general, population performance declines in response to habitat loss but size of remaining area and isolation effects is known also to influence the population trend. Small mammals are well suited for examination of population responses to habitat fragmentation as they have... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general. |
| Ano: 2009 |
URL: http://orgprints.org/16306/1/16306.pdf |
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