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Pervasive Defaunation of Forest Remnants in a Tropical Biodiversity Hotspot

Show simple item record Kierulff, Maria Cecilia M. Gatto, Cassiano A. Ferreira Guidorizzi, Carlos E. Peres, Carlos A. Canale, Gustavo R. 2016-02-19T09:46:34Z 2016-02-19T09:46:34Z 2012
dc.identifier.citation Canale GR, Peres CA, Guidorizzi CE, Gatto CAF, Kierulff MCM (2012) Pervasive Defaunation of Forest Remnants in a Tropical Biodiversity Hotspot. PLoS ONE 7(8): e41671. doi:10.1371/journal.pone.0041671 es_CR
dc.identifier.uri doi:10.1371/journal.pone.0041671
dc.description.abstract Tropical deforestation and forest fragmentation are among the most important biodiversity conservation issues worldwide, yet local extinctions of millions of animal and plant populations stranded in unprotected forest remnants remain poorly explained. Here, we report unprecedented rates of local extinctions of medium to large-bodied mammals in one of the world’s most important tropical biodiversity hotspots. We scrutinized 8,846 person-years of local knowledge to derive patch occupancy data for 18 mammal species within 196 forest patches across a 252,669-km2 study region of the Brazilian Atlantic Forest. We uncovered a staggering rate of local extinctions in the mammal fauna, with only 767 from a possible 3,528 populations still persisting. On average, forest patches retained 3.9 out of 18 potential species occupancies, and geographic ranges had contracted to 0–14.4% of their former distributions, including five large-bodied species that had been extirpated at a regional scale. Forest fragments were highly accessible to hunters and exposed to edge effects and fires, thereby severely diminishing the predictive power of species-area relationships, with the power model explaining only ~9% of the variation in species richness per patch. Hence, conventional species-area curves provided over-optimistic estimates of species persistence in that most forest fragments had lost species at a much faster rate than predicted by habitat loss alone. es_CR
dc.language.iso en es_CR
dc.publisher PLOS one es_CR
dc.subject extinction es_CR
dc.subject population size es_CR
dc.subject tropical diversity es_CR
dc.subject forest fragmentation es_CR
dc.subject tropical deforestation es_CR
dc.subject deforestación tropical es_CR
dc.subject fragmentación del bosque es_CR
dc.subject diversidad tropical es_CR
dc.subject tamaño de la población es_CR
dc.subject extinción es_CR
dc.title Pervasive Defaunation of Forest Remnants in a Tropical Biodiversity Hotspot es_CR
dc.type Article es_CR
dc.type Dataset es_CR

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    Artículos de Acceso Abierto y Manuscritos de Investigadores entregados a ACG

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