Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/18243
Título: The fate of Amazonian forest fragments: A 32-year investigation
Autor: Laurance, William F.
Camargo, José Luís Campana
Luizâo, Regina Celi Costa
Laurance, Susan G.W.
Pimm, Stuart
Bruna, Emilio M.
Stouffer, Philip C.
Williamson, G. Bruce
Benítez-Malvido, Julieta
Vasconcelos, Heraldo L.
Van Houtan, Kyle
Zartman, Charles Eugene
Boyle, Sarah Ann
Didham, Raphael K.
Andrade, Ana C.S.
Lovejoy, Thomas E.
Palavras-chave: Anthropogenic Effect
Carbon Sequestration
Community Dynamics
Drought
Ecosystem Management
Edge Effect
Experimental Study
Extinction Risk
Fire
Habitat Conservation
Habitat Fragmentation
Hunting
Management Practice
Matrix
Microclimate
Persistence
Regrowth
Secondary Forest
Thunderstorm
Tropical Forest
Amazonia
Bos
Data do documento: 2011
Revista: Biological Conservation
É parte de: Volume 144, Número 1, Pags. 56-67
Abstract: We synthesize findings to date from the world's largest and longest-running experimental study of habitat fragmentation, located in central Amazonia. Over the past 32. years, Amazonian forest fragments ranging from 1 to 100. ha have experienced a wide array of ecological changes. Edge effects have been a dominant driver of fragment dynamics, strongly affecting forest microclimate, tree mortality, carbon storage, fauna, and other aspects of fragment ecology. However, edge-effect intensity varies markedly in space and time, and is influenced by factors such as edge age, the number of nearby edges, and the adjoining matrix of modified vegetation surrounding fragments. In our study area, the matrix has changed markedly over the course of the study (evolving from large cattle pastures to mosaics of abandoned pasture and regrowth forest) and this in turn has strongly influenced fragment dynamics and faunal persistence. Rare weather events, especially windstorms and droughts, have further altered fragment ecology. In general, populations and communities of species in fragments are hyperdynamic relative to nearby intact forest. Some edge and fragment-isolation effects have declined with a partial recovery of secondary forests around fragments, but other changes, such as altered patterns of tree recruitment, are ongoing. Fragments are highly sensitive to external vicissitudes, and even small changes in local land-management practices may drive fragmented ecosystems in markedly different directions. The effects of fragmentation are likely to interact synergistically with other anthropogenic threats such as logging, hunting, and especially fire, creating an even greater peril for the Amazonian biota. © 2010.
DOI: 10.1016/j.biocon.2010.09.021
Aparece nas coleções:Artigos

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.