Banca de DEFESA: ADRIANA ALMEIDA DE LIMA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : ADRIANA ALMEIDA DE LIMA
DATA : 23/02/2018
HORA: 13:00
LOCAL: sala de vídeo conferência do POP-RN, Centro de Convivência da UFRN
TÍTULO:

Influence of climate change on the alfa and beta diversity of the Atlantic Forest primates


PALAVRAS-CHAVES:

heterogenization; alpha diversity; turnover; nestedness


PÁGINAS: 52
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

Changes in climatic conditions influenced by human activities have an impact on biodiversity. Modifications in species distributions can alter diversity patterns over time and space. The Atlantic Forest is a region of high primate vulnerability due to climate change. We will investigate how these changes, in optimistic and pessimistic scenarios, will influence the patterns of primate diversity in the Atlantic Forest. Specifically: i) where are the largest changes in species richness expected? ii) the spatial pattern of beta diversity will undergo homogenization or heterogenization? and iii) where are the major changes in species composition projected? We generated geographic distributions for species from current climate suitability models. The richest regions in species will be more concentrated on the coast of the biome and the richness will decrease in areas of ecotone. Changes in richness will occur predominantly due to species loss. Spatially, communities will be more heterogeneous in the future, with increased beta diversity. The heterogenization should be driven by the reduction of the area of species geographic distributions. In the future, ecotone regions, especially the central Atlantic Forest and the westernmost region, both in contact with Cerrado, will become more heterogeneous and will undergo great changes in species composition. The changes in the precipitation regime predicted for these areas influence the  primates diversity directly, due to the physiological tolerances of the organisms, and indirectly, through changes in the forest structure and resources availability. The results should be observed with caution, since there are sources of uncertainties in the projections. Nevertheless, we consider that the changes detected are underestimated because the projections were restricted to the known area of the species and the dispersion in the future is extremely compromised by the high loss and fragmentation of habitat in the Atlantic Forest.


MEMBROS DA BANCA:
Externo à Instituição - LEANDRO JERUSALINSKY - ICMBio
Presidente - 1914239 - MIRIAM PLAZA PINTO
Externo à Instituição - SIDNEY FEITOSA GOUVEIA - UFS
Notícia cadastrada em: 31/01/2018 17:00
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