Phenotypic changes and small mammal impoverishment on a Brazilian Atlantic Forest Island

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorBovendorp, Ricardo Siqueira
dc.creatorNeves, Carolina Lima
dc.creatorGaletti, Mauro
dc.date2014-05-27T11:28:20Z
dc.date2016-10-25T18:43:29Z
dc.date2014-05-27T11:28:20Z
dc.date2016-10-25T18:43:29Z
dc.date2013-02-01
dc.date.accessioned2017-04-06T02:12:27Z
dc.date.available2017-04-06T02:12:27Z
dc.identifierMammalia, v. 77, n. 1, p. 51-58, 2013.
dc.identifier0025-1461
dc.identifier1864-1547
dc.identifierhttp://hdl.handle.net/11449/74532
dc.identifierhttp://acervodigital.unesp.br/handle/11449/74532
dc.identifier10.1515/mammalia-2011-0099
dc.identifierWOS:000314753700005
dc.identifier2-s2.0-84878148025.pdf
dc.identifier2-s2.0-84878148025
dc.identifierhttp://dx.doi.org/10.1515/mammalia-2011-0099
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/895297
dc.descriptionFaunal impoverishment and distorted species compositions are common phenomena in oceanic islands; however, many land-bridge islands are poorly inventoried, especially in the Neotropics. We sampled a small mammal community on a land-bridge island (Anchieta Island) along the Brazilian coast. We found only one marsupial Didelphis aurita (Wied-Neuwied, 1826) and two rodent species Oligoryzomys nigripes (Olfers, 1818) and Trinomys iheringi (Thomas, 1911) during 12 months of live trapping and 9195 trap-nights. The diversity of rodents and marsupials was not explained by species-area relations, indicating possible past extinctions. The abundance of D. aurita and O. nigripes was approximately three times higher, while the abundance of T. iheringi was approximately four times lower than abundances reported from other Brazilian Atlantic Forest sites. The population of D. aurita exhibited many phenotypic changes; males were on average 8 % smaller and females produced 30 % less litters than those from the mainland and other land-bridge islands. The long history of forest disturbance, habitat loss, reduction in forest productivity, and the recent introduction of mesopredators may be the major drivers that explain the small mammal community composition on this island. © 2013 Walter de Gruyter GmbH, Berlin/Boston.
dc.languageeng
dc.relationMammalia
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectDefaunation
dc.subjectLand-bridge island
dc.subjectMark and recapture method
dc.subjectMesopredator release
dc.subjectPredation
dc.subjectabundance
dc.subjectforest inventory
dc.subjectforestry production
dc.subjecthabitat fragmentation
dc.subjecthabitat loss
dc.subjectmark-recapture method
dc.subjectNeotropical Region
dc.subjectphenotype
dc.subjectsmall mammal
dc.subjectspecies diversity
dc.subjectspecies-area relationship
dc.subjectAtlantic Forest
dc.subjectBrazil
dc.titlePhenotypic changes and small mammal impoverishment on a Brazilian Atlantic Forest Island
dc.typeOtro


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