Banca de DEFESA: MAURÍCIO DÁLIA NETO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : MAURÍCIO DÁLIA NETO
DATA : 26/02/2018
HORA: 08:00
LOCAL: Sala de reuniões do departamento de ecologia
TÍTULO:

Species richness, evolutionary history and functional traits: relationships between the diversity geographic patterns of Caatinga birds.

PALAVRAS-CHAVES:

diversity, birds, Caatinga, species richness, phylogeny, functional

PÁGINAS: 53
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

The biological diversity can be divided into at least three distinct and complementary types, which include taxonomic, phylogenetic, and functional diversity. Understanding how these components vary in space is the key to better understanding the threat to biodiversity.In addition, analyzing communities from a local perspective (alpha component) and between communities (beta component) generate more information on how the various forms of diversity can be distributed geographically. In recent years, the relationship between spatial patterns of diversity has occupied the attention of ecologists, especially to understand how these components change locally and geographically. With this, we aim to describe the geographic patterns of richness, evolutionary history, phylogenetic and functional differences of birds in the Caatinga dry forest, in the alpha and beta components of diversity.We also investigate whether spatial scale and different phylogenetic sources influence the results. For this, we selected 405 bird species from distributions from BirdLife, their phylogenetic information from the online BirdTree database, and the functional data from EltonTrait 1.0. We used measures based on species richness, evolutionary history, phylogenetic and functional mean differences, to represent the alpha component. As well as the turnover of evolutionary species and history and average and functional differences between the eight neighboring communities, to measure beta diversity. Comparing the results of the correlations between the different scales (1, 0.5 and 0.25) and phylogenetic topologies, we identified that they do not interfere in the type of result. Contrary to expectations, species richness does not correlate with other forms of diversity. The phylogenetic mean diversity in the alpha component correlated with evolutionary history (r = 0.5) and with functional mean diversity (r = 0.66). In the beta component, the mean phylogenetic diversity is correlated with the functional mean diversity (r = 0.57), as well as the turnover of species with phylogenetic turnover (r = 0.8). The diversity of birds presents a high heterogeneity in their geographical distribution. Probably, this pattern should be highly influenced by climatic and topographical heterogeneity. In general, our results can create subsidies that support the choice of areas for spatial prioritization for bird conservation in the Caatinga.

MEMBROS DA BANCA:
Interno - 1678202 - CARLOS ROBERTO SORENSEN DUTRA DA FONSECA
Presidente - 1914239 - MIRIAM PLAZA PINTO
Externo à Instituição - Marcos Figueiredo - UNIRIO