Banca de QUALIFICAÇÃO: ISLÂNDIA SILVA PEREIRA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : ISLÂNDIA SILVA PEREIRA
DATA : 02/04/2024
HORA: 07:30
LOCAL: Google Meet
TÍTULO:

Patterns of variation in phylogenetic diversity in tree communities in Brazil

PALAVRAS-CHAVES:

Evolutionary history. Environmental filtration. Dispersion limitation. Brazilian Biomes. Variation Partition

PÁGINAS: 58
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
SUBÁREA: Ecologia Teórica
RESUMO:

One of the central goals of ecology is to quantify the relative importance of different community assembly mechanisms in tropical tree communities. Recent work in this field has focused solely on the importance of environment and space. Although important, these works do not simultaneously address the role of kinship relationships between species, the environment and space in explaining floristic variation. Phylogenetic structure offers important insights into the different processes that shape the community. We assessed the relative importance of phylogenetic, environmental and spatial components in explaining the floristic variation of trees in Brazil. We constructed eigenvectors to operationalize the predictor variables (phylogeny, environment and space) of our models. We used variation partitioning based on canonical models, predicting that the phylogenetic component would play a stronger role on floristic variation in relation to the environment and the spatial component, and would better explain floristic variation in the different biomes of Brazil. Our results confirmed these hypotheses, showing that variations in species composition in tree communities are strongly influenced by kinship relationships between species. This evidence constitutes elements to recommend the incorporation of the phylogenetic relationships of species in ecological studies that aim to understand the causes that influence patterns of variation in species composition in tree communities.

MEMBROS DA BANCA:
Presidente - 253812001 - PEDRO VASCONCELLOS EISENLOHR
Externo à Instituição - JOÃO AUGUSTO ALVES MEIRA NETO - UFV
Externo à Instituição - VANESSA LEITE REZENDE - UFLA