Effect of fragmentation on functional diversity of primates
Through this project, we aim at determining how and which landscape metrics affect primate species richness and functional diversity by using functional traits directly linked to seed dispersal. Using a large dataset, the project will enable the comparison of these effects between the Amazon and Atlantic Rainforests of Brazil but also a cross-continental comparison.
Funding: FAPESP
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Movement ecology and seed dispersal by the black-lion tamarins
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In this project, we aim at gathering a maximum of data about the behavior and ecology of black lion-tamarins (BLT) in areas presenting different landscape characteristics. We focus particularly on how the movement of the species affects the spatial seed dispersal pattern, looking for understanding the role of BLT in forest regeneration. Using agent-based models, we plan to determine how landscape characteristics affect the ecological role of BLT in Atlantic Forest.
Funding: FAPESP
Effect of defaunation on dispersal distances and spatial genetic structure of one large-seeded tree of the Atlantic Forest
In this Project, we will determine the effect of defaunation on seed dispersal distances and on the spatial genetic structure of Cryptocarya mandioccana, a long-lived tree of the Atlantic Forest. Using seeds dispersed by three of the most important dispersers of the species (muriqui, howler monkeys and jacutinga) together with leaves from adult C. mandiocanna trees, we will determine the dispersal distances resulting from the activity of each disperser through molecular analyses. In addition, we will determine the spatial genetic structure of C. mandioccana through the genotyping of leaves collected from seedlings and adult trees within 24ha plots along a defaunation gradient. In this manner, and combining with field data of C. mandioccana recruitment, we will be able to link ecological processes to their consequences on plant population genetics.
Funding: CNPq and FAPESP
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Defaunation and post-dispersal seed fate
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Through different connected projects, we search at better understanding 1) how the primary seed dispersers affect the post-dispersal seed fate, 2) what are the effects of defaunation on the community of primary seed dispersers, secondary seed dispersers such as dung beetles and scatter-hoarding rodents, and seed predators, and 3) determine the effects of defaunation on plant recruitment through the analysis of the successive steps of the dispersal process.