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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Mammal defaunation as surrogate of trophic cascades in hotspot

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Jorge, Maria Luisa S. P. [1] ; Galetti, Mauro [1] ; Ribeiro, Milton C. [1] ; Ferraz, Katia Maria P. M. B. [2]
Total Authors: 4
[1] Univ Estadual Paulista UNESP, Dept Ecol, BR-13506900 Rio Claro, SP - Brazil
[2] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz, Dept Ciencias Florestais, BR-13418900 Piracicaba, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Biological Conservation; v. 163, n. SI, p. 49-57, JUL 2013.
Web of Science Citations: 60

Preserving large tracts of natural habitats is essential to maintain biodiversity. Nevertheless, even large areas may still suffer from less ``visible{''} impacts such as loss of ecological processes. Because mapping ecological processes over large scales is not practical, an alternative is to map surrogate species that are key for those processes. In this study, we chose four species of Neotropical large mammals (the largest apex predator: jaguar - Panthera onca; the largest herbivore: tapir - Tapirus terrestris; the largest seed predator: white-lipped peccary - Tayassu pecan; and the largest arboreal seed disperser: muriqui - Brachyteles spp.) in an ecosystem with an old history of human impact (the Atlantic Forest) to test whether areas with native forest still harbor ecological processes that may guarantee long-term ecosystem maintenance. We gathered 94 locations with recent presence of the four species to map current ranges and model suitable areas. Our results reveal that 96% of the remaining Atlantic Forest is depleted of at least one of the four surrogate species and 88% is completely depleted of all four surrogate species. We also found that only 16% is still environmentally suitable for all four, and 55% is completely unsuitable to all four of them. Our study highlights the importance of looking beyond land cover to fully depict intactness of natural areas, and suggests that ecosystems with a long history of human impact (such as the Atlantic Forest) may be suffering from ecological impacts not seen at a first glance. (C) 2013 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 11/10693-8 - Ecology ánd conservation of a keystone mammal species: “The white-lipped peccary (Tayassu pecari) ín “The Atlantic Forest
Grantee:Maria Luisa da Silva Pinto Jorge
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 10/52315-7 - Top predators of food chain
Grantee:Pedro Manoel Galetti Junior
Support type: BIOTA-FAPESP Program - Regular Research Grants