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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.)

Dietary expansion facilitates the persistence of a large frugivore in fragmented tropical forests

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Magioli, Marcelo [1, 2] ; Villar, Nacho [3, 4] ; Jorge, Maria Luisa [5] ; Biondo, Cibele [6] ; Keuroghlian, Alexine [7] ; Bradham, Jennifer [8] ; Pedrosa, Felipe [9] ; Costa, Vladimir [10] ; Moreira, Marcelo Zacharias [11] ; Paschoaletto Micchi de Barros Ferraz, Katia Maria [2, 12] ; Galetti, Mauro [13, 4]
Total Authors: 11
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[1] Inst Chico Mendes Conservacao Biodiversidade ICMB, Ctr Nacl Pesquisa & Conservacao Mamiferos Carnivo, Atibaia, SP - Brazil
[2] Inst Procarnivoros, Atibaia, SP - Brazil
[3] Netherlands Inst Ecol, Dept Aquat Ecol, Wageningen - Netherlands
[4] Univ Estadual Paulista UNESP, Inst Biocrencias, Dept Biodiversidade, Rio Claro, SP - Brazil
[5] Vanderbilt Univ, Earth & Environm Sci, 221 Kirkland Hall, Nashville, TN 37235 - USA
[6] Univ Fed ABC UFABC, Ctr Ciencias Nat & Humanas CCNH, Sao Bernardo Do Campo, SP - Brazil
[7] Fundacao Neotrop Brasil, Peccary Project IUCN SSC Peccary Specialist Grp, Campo Grande, MS - Brazil
[8] Wofford Coll, Dept Environm Studies, Spartanburg, SC - USA
[9] Mao Mata Manejo & Solucoes Ambientais, Sao Paulo, SP - Brazil
[10] Univ Estadual Paulista, Ctr Isotopos Estaveis, Inst Biociencias, Botucatu, SP - Brazil
[11] Univ Sao Paulo, Ctr Energia Nucl Agr, Lab Ecol Isotop, Piracicaba, SP - Brazil
[12] Univ Sao Paulo, Escola Super Agr Luiz de Queiroz ESALQ, Dept Ciencias Florestais, Lab Ecol Manejo & Conservacao Fauna Silvestre LEM, Piracicaba, SP - Brazil
[13] Univ Miami, Dept Biol, Coral Gables, FL 33124 - USA
Total Affiliations: 13
Document type: Journal article
Web of Science Citations: 0

How species persist in fragmented habitats is essential to understanding species resilience in response to increasing anthropogenic pressures. It has been suggested that expansion in dietary niche allows populations to persist in human-modified landscapes, yet this hypothesis has been poorly tested in highly diverse ecosystems such as tropical forests where frugivory is ubiquitous. Here, we measured dietary niche expansion of a large forest-dwelling mammal, the white-lipped peccary (Tayassu pecari), in the Atlantic Forest, Brazil, by comparing its diet using stable carbon (delta C-13) and nitrogen (delta N-15) isotopes. We collected hair of white-lipped peccaries in three continuous and three fragmented forests and compared delta C-13 and delta N-15 values, resource use and isotopic niches among populations and between forest types. We also tested the relationship between isotopic values of the populations and the forest cover percentage. White-lipped peccaries fed mainly on forest sources (C-3 resources), especially in continuous forests, but 28% of the individuals in fragmented sites also incorporated C-4 resources to some extent. In fragmented forests, the populations had isotopic niches from 3- to 3.6-fold the size of those in continuous forests. This niche expansion was due to the consumption of food items with higher delta N-15 values and C-4 crops. Differences among populations were larger among fragmented forests, suggesting variable site-specific strategies to cope with habitat loss. The mean isotopic values of white-lipped peccary populations were negatively correlated with the loss of forest cover. Some small forest fragments might still retain relatively high habitat quality, and white-lipped peccaries might be able to capitalize on such variety of resources, shifting their diets from those observed in continuous forests. We suggest that high dietary flexibility and dietary expansion toward consumption of non-forest resources might facilitate the persistence of large frugivores in fragmented habitats. (AU)

FAPESP's process: 14/01986-0 - Ecological consequences of defaunation in the Atlantic Rainforest
Grantee:Mauro Galetti Rodrigues
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 14/10192-7 - Trophic ecology of carnivorous mammals of the Atlantic Forest: use of stable isotope and functional diversity for conservation
Grantee:Marcelo Magioli
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 14/50434-0 - Assessing ecosystem services of invasive fruits and frugivores
Grantee:Mauro Galetti Rodrigues
Support Opportunities: BIOTA-FAPESP Program - Regular Research Grants
FAPESP's process: 16/15436-7 - Isotope ecology of neotropical ungulates in face of feral pig invasion
Grantee:Felipe Pedrosa Chagas
Support Opportunities: Scholarships abroad - Research Internship - Doctorate (Direct)
FAPESP's process: 15/18381-6 - Reversing defaunation or increasing ecological degradation? Invasion ecology of feral pigs Sus scrofa in a defaunated landscape
Grantee:Felipe Pedrosa Chagas
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 15/11521-7 - Defaunated movement: the role of animal behaviour and spatial interactions in mediating trophic cascades, niche partitioning and community dynamics in the Atlantic Forest
Grantee:Jose Ignacio Fernandez de La Pradilla Villar
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 14/09300-0 - Trophic ecology, functional diversity and occurrence of terrestrial mammals in the Atlantic Forest
Grantee:Katia Maria Paschoaletto Micchi de Barros Ferraz
Support Opportunities: Regular Research Grants