Large-scale Habitat Corridors for Biodiversity Conservation: A Forest Corridor in Madagascar

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Ramiadantsoa, Tanjona Ovaskainen, Otso Rybicki, Joel Hanski, Ilkka 2017-05-11T06:46:37Z 2017-05-11T06:46:37Z 2015
dc.identifier.citation Ramiadantsoa , T , Ovaskainen , O , Rybicki , J & Hanski , I 2015 , ' Large-scale Habitat Corridors for Biodiversity Conservation: A Forest Corridor in Madagascar ' , PloS one , vol. 10 , no. 7 , e0132126 , pp. 1-18 . en
dc.identifier.issn 1932-6203
dc.identifier.other PURE UUID: 1fa0fad1-748c-4412-81e9-e59b9c95789e
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE FILEURL:
dc.description VK: Suomela, J.; HIIT
dc.description.abstract In biodiversity conservation, habitat corridors are assumed to increase landscape-level connectivity and to enhance the viability of otherwise isolated populations. While the role of corridors is supported by empirical evidence, studies have typically been conducted at small spatial scales. Here, we assess the quality and the functionality of a large 95-km long forest corridor connecting two large national parks (416 and 311 km2) in the southeastern escarpment of Madagascar. We analyze the occurrence of 300 species in 5 taxonomic groups in the parks and in the corridor, and combine high-resolution forest cover data with a simulation model to examine various scenarios of corridor destruction. At present, the corridor contains essentially the same communities as the national parks, reflecting its breadth which on average matches that of the parks. In the simulation model, we consider three types of dispersers: passive dispersers, which settle randomly around the source population; active dispersers, which settle only in favorable habitat; and gap-avoiding active dispersers, which avoid dispersing across non-habitat. Our results suggest that long-distance passive dispersers are most sensitive to ongoing degradation of the corridor, because increasing numbers of propagules are lost outside the forest habitat. For a wide range of dispersal parameters, the national parks are large enough to sustain stable populations until the corridor becomes severely broken, which will happen around 2065 if the current rate of forest loss continues. A significant decrease in gene flow along the corridor is expected after 2040, and this will exacerbate the adverse consequences of isolation. Our results demonstrate that simulation studies assessing the role of habitat corridors should pay close attention to the mode of dispersal and the effects of regional stochasticity. en
dc.format.extent 1-18
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries PLoS One en
dc.relation.ispartofseries Volume 10, issue 7 en
dc.rights openAccess en
dc.subject.other 113 Computer and information sciences en
dc.subject.other 213 Electronic, automation and communications engineering, electronics en
dc.subject.other 112 Statistics and probability en
dc.subject.other 5141 Sociology en
dc.subject.other 515 Psychology en
dc.subject.other 518 Media and communications en
dc.title Large-scale Habitat Corridors for Biodiversity Conservation: A Forest Corridor in Madagascar en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Computer Science en
dc.subject.keyword 113 Computer and information sciences
dc.subject.keyword 213 Electronic, automation and communications engineering, electronics
dc.subject.keyword 112 Statistics and probability
dc.subject.keyword 5141 Sociology
dc.subject.keyword 515 Psychology
dc.subject.keyword 518 Media and communications
dc.identifier.urn URN:NBN:fi:aalto-201705113842
dc.identifier.doi 10.1371/journal.pone.0132126
dc.type.version publishedVersion

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