Forest structure in a mosaic of rainforest sites: the effect of fragmentation and recovery after clear cut

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dc.contributor.authorFaria, Deborah
dc.contributor.authorMariano-Neto, Eduardo
dc.contributor.authorZanforlin Martini, Adriana Maria [UNIFESP]
dc.contributor.authorOrtiz, Jose Vicente
dc.contributor.authorMontingelli, Rodrigo
dc.contributor.authorRosso, Sergio
dc.contributor.authorBarradas Paciencia, Mateus Luis
dc.contributor.authorBaumgarten, Julio
dc.contributor.institutionUniv Estadual Santa Cruz
dc.contributor.institutionUniv Estadual Sudoeste Bahia
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionInst Driades Pesquisa & Conservacao Biodiversidad
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniv Paulista
dc.date.accessioned2016-01-24T13:52:32Z
dc.date.available2016-01-24T13:52:32Z
dc.date.issued2009-05-10
dc.description.abstractA variety of human-induced disturbances such as forest fragmentation and recovery after deforestation for pasture or agricultural activities have resulted in a complex landscape mosaic in the Una region of northeastern Brazil. Using a set of vegetation descriptors, we investigated the main structural changes observed in forest categories that comprise the major components of the regional landscape and searched for potential key descriptors that could be used to discriminate among different forest categories. We assessed the forest structure of five habitat categories defined as (I) interiors and (2) edges of large fragments of old-growth forest (>1000 ha), (3) interiors and (4) edges of small forest fragments (<100 ha), and (5) early secondary forests. Forest descriptors used here were: frequency of herbaceous lianas and woody climbers, number of standing dead trees, number of fallen trunks, litter depth, number of pioneer plants (early secondary and shade-intolerant species), vertical foliage stratification profile and distribution of trees in different diameter classes. Edges and interiors of forest fragments were significantly different only in the number of standing dead trees. Secondary forests and edges of fragments showed differences in litter depth, fallen trunks and number of pioneer trees, and secondary forests were significantly different from fragment interiors in the number of standing dead trees and the number of pioneer trees. Horizontal and vertical structure evaluated via ordination analysis showed that fragment interiors, compared to secondary forests, were characterized by a greater number of medium (25-35 cm) and large (35-50 cm) trees and smaller numbers of thin trees (5-10 cm). There was great heterogeneity at the edges of small and large fragments, as these sites were distributed along almost the entire gradient. Most interiors of large and small fragments presented higher values of foliage densities at higher strata ( 15-20 m and at 20-25 m height), and lower densities at 1-5 m. All secondary forests and some fragment edge sites showed an opposite tendency. A discriminant function highlighted differences among forest categories, with transects of large fragment interiors and secondary forests representing two extremes along a disturbance gradient determined by foliage structure (densities at 15-20 m and 20-25 m), with the edges of both large and small fragments and the interiors of small fragments scattered across the gradient. the major underlying processes determining patterns of forest disturbance in the study region are discussed, highlighting the importance of forest fragments, independently of its size, as forests recovery after clear cut show a greatly distinct structure, with profound implications on fauna movements. (C) 2009 Elsevier BY. All rights reserved.en
dc.description.affiliationUniv Estadual Santa Cruz, Dept Ciencias Biol, BR-45650000 Ilheus, BA, Brazil
dc.description.affiliationUniv Estadual Sudoeste Bahia, Dept Ciencias Biol, BR-45206190 Jequie, BA, Brazil
dc.description.affiliationUniversidade Federal de São Paulo, Dept Ciencias Biol, BR-09972270 Diadema, SP, Brazil
dc.description.affiliationInst Driades Pesquisa & Conservacao Biodiversidad, BR-45654480 Ilheus, BA, Brazil
dc.description.affiliationUniv São Paulo, Inst Biociencias, Dept Ecol, BR-05508900 São Paulo, Brazil
dc.description.affiliationUniv Paulista, Herbaria UNIP, BR-01310100 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, Dept Ciencias Biol, BR-09972270 Diadema, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipPROB10PRONABIO/MMA
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent2226-2234
dc.identifierhttp://dx.doi.org/10.1016/j.foreco.2009.02.032
dc.identifier.citationForest Ecology and Management. Amsterdam: Elsevier B.V., v. 257, n. 11, p. 2226-2234, 2009.
dc.identifier.doi10.1016/j.foreco.2009.02.032
dc.identifier.issn0378-1127
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/31517
dc.identifier.wosWOS:000265970700004
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofForest Ecology and Management
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.subjectAtlantic rainforesten
dc.subjectEdges effecten
dc.subjectForest regenerationen
dc.subjectForest structureen
dc.titleForest structure in a mosaic of rainforest sites: the effect of fragmentation and recovery after clear cuten
dc.typeinfo:eu-repo/semantics/article
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