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Survival and rebound of Antillean dry forests: role of forest fragmentsAuthor(s): I.A. Ramjohn; P.G. Murphy; T.M. Burton; A.E. Lugo
Source: Forest Ecology and Management 284:124-132.
Publication Series: Scientific Journal (JRNL)
Station: International Institute of Tropical Forestry
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DescriptionAntillean dry forests have experienced high levels of human impact for almost five centuries. Economic changes in the second half of the 20th century have facilitated forest recovery in Puerto Rico. We quantified the extent of forest cover and the community composition of representative forest fragments in the subtropical dry forest life zone (sensu Holdridge, 1967) in southwestern Puerto Rico. Forest cover, which was largely eliminated by the 1940s, stood at 48% in the western dry forest life zone in 1993. Fragments varied in land-use history and supported from 1% to 86% of the reference species sampled in Guánica Forest, a 4000-ha protected area. Reference species were well represented in forest fragments, even those smaller than 1 ha, if they had never been completely cleared, but were uncommon in forests regenerating on previously cleared sites. The studied fragments are novel ecosystems which combine native and introduced elements; Leucaena leucocephala (Lam.) De Wit, an introduced legume, was the most common species, regardless of land-use history.
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CitationRamjohn, I.A.; Murphy, P.G.; Burton, T.M.; Lugo, A.E. 2012. Survival and rebound of Antillean dry forests: role of forest fragments. Forest Ecology and Management 284:124-132.
KeywordsForest fragmentation, Land-use change, Puerto Rico, Subtropical dry forest, Novel ecosystems
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