Differential effects of habitat fragmentation on birds and mammals in Valdivian temperate rainforests

Four recent studies on Chilean vertebrates underscore the very different effects that habitat fragmentation may have under different conditions. In southern Chile, birds exhibited significant species-area relationships, whereas the more depauperate small mammal community did not. The avifauna of hig...

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Autor principal:	KELT,DOUGLAS A.
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2001
Materias:	habitat fragmentation Valdivian temperate rainforest small mammals birds conservation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000400005
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spelling	oai:scielo:S0716-078X20010004000052014-05-22Differential effects of habitat fragmentation on birds and mammals in Valdivian temperate rainforestsKELT,DOUGLAS A. habitat fragmentation Valdivian temperate rainforest small mammals birds conservation Four recent studies on Chilean vertebrates underscore the very different effects that habitat fragmentation may have under different conditions. In southern Chile, birds exhibited significant species-area relationships, whereas the more depauperate small mammal community did not. The avifauna of highly isolated rainforest remnants in Fray Jorge National Park (IV Región) presented steeper species-area relations than those in southern Chile, reminiscent of land-bridge islands after faunal relaxation. The small mammal results were unexpected but may reflect the reduced vagility and immigration potential of this group. Additionally, the inter-remnant matrix habitat may support large populations of only some species, allowing them to capitalize on resources that are available in forest remnants. Such an effect is less likely for birds due to their greater vagility. Although the influence of remnant area is more clearly demonstrated for birds in Chile, it appears that small mammal assemblages may be more immediately impacted by habitat fragmentation than are birds, and that further fragmentation of temperate rainforests will seriously impoverish the small mammal assemblage, many of whose members are endemic to this region. Further research should emphasize the role of the inter-remnant matrix, of habitat corridors, and of the relative sensitivity of different species to matrix/corridor quality and remnant isolationinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.74 n.4 20012001-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000400005en10.4067/S0716-078X2001000400005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	habitat fragmentation Valdivian temperate rainforest small mammals birds conservation
spellingShingle	habitat fragmentation Valdivian temperate rainforest small mammals birds conservation KELT,DOUGLAS A. Differential effects of habitat fragmentation on birds and mammals in Valdivian temperate rainforests
description	Four recent studies on Chilean vertebrates underscore the very different effects that habitat fragmentation may have under different conditions. In southern Chile, birds exhibited significant species-area relationships, whereas the more depauperate small mammal community did not. The avifauna of highly isolated rainforest remnants in Fray Jorge National Park (IV Región) presented steeper species-area relations than those in southern Chile, reminiscent of land-bridge islands after faunal relaxation. The small mammal results were unexpected but may reflect the reduced vagility and immigration potential of this group. Additionally, the inter-remnant matrix habitat may support large populations of only some species, allowing them to capitalize on resources that are available in forest remnants. Such an effect is less likely for birds due to their greater vagility. Although the influence of remnant area is more clearly demonstrated for birds in Chile, it appears that small mammal assemblages may be more immediately impacted by habitat fragmentation than are birds, and that further fragmentation of temperate rainforests will seriously impoverish the small mammal assemblage, many of whose members are endemic to this region. Further research should emphasize the role of the inter-remnant matrix, of habitat corridors, and of the relative sensitivity of different species to matrix/corridor quality and remnant isolation
author	KELT,DOUGLAS A.
author_facet	KELT,DOUGLAS A.
author_sort	KELT,DOUGLAS A.
title	Differential effects of habitat fragmentation on birds and mammals in Valdivian temperate rainforests
title_short	Differential effects of habitat fragmentation on birds and mammals in Valdivian temperate rainforests
title_full	Differential effects of habitat fragmentation on birds and mammals in Valdivian temperate rainforests
title_fullStr	Differential effects of habitat fragmentation on birds and mammals in Valdivian temperate rainforests
title_full_unstemmed	Differential effects of habitat fragmentation on birds and mammals in Valdivian temperate rainforests
title_sort	differential effects of habitat fragmentation on birds and mammals in valdivian temperate rainforests
publisher	Sociedad de Biología de Chile
publishDate	2001
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000400005
work_keys_str_mv	AT keltdouglasa differentialeffectsofhabitatfragmentationonbirdsandmammalsinvaldiviantemperaterainforests
_version_	1718439515987640320

Differential effects of habitat fragmentation on birds and mammals in Valdivian temperate rainforests

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