Banca de QUALIFICAÇÃO: LUIZ ANTONIO COSTA GOMES

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : LUIZ ANTONIO COSTA GOMES
DATA : 16/08/2018
HORA: 14:00
LOCAL: Sala 35 do ICBS
TÍTULO:

Metacommunity and metaensembles of phyllostomid bats in Brazil

PALAVRAS-CHAVES:

Atlantic Forest, Brazil, Caatinga, Cerrado, clementsian distribution, gleasonian distribution, nested clumped with species loss distribution, random distribution

PÁGINAS: 84
GRANDE ÁREA: Ciências Biológicas
ÁREA: Zoologia
SUBÁREA: Comportamento Animal
RESUMO:

Knowing the patterns and processes of species distribution in large scale is one of the main point of Ecology and Biogeography. Recently, the Elements of Metacommunity Structure (EMS) have been a used approach to identify patters of species distributions along environmental gradients in large scale. Next to this approach, multivariate analyses have been used to identify the processes that structure the metacommunities. Herein, (1) we determine the idealized pattern of species distribution which best-fit to the observed distributions of phyllostomid bats in Brazil and in the Caatinga, the Cerrado, and the Atlantic Forest biomes; and (2) we identify the composition of the environmental gradient which molds the distributions of these species. Species were classified as metacommunity
(all species) and metaensemble of animalivorous (gleaner and omnivorous species), frugivorous (frugivorous species), and nectarivorous (nectarivorous species). Incidence matrices, ‘municipality x species’, were built with species occurrence data of phyllostomid bats captured in the Brazilian territory, as well as, exclusively in the Caatinga, the Cerrado, and the Atlantic Forest. These data were compiled from literature and Adriano Lucio
Peracchi Mammal Collection, located at Laboratório de Mastozoologia in Federal Rural do Rio de Janeiro, Seropédica, Rio de Janeiro, Brazil. Since sample units need to be maximally sampled to run the analyses of EMS, we considered municipality as sample unit. Only the municipality with more than nine species was considered. Thus, in general, we used 168 municipalities distributed in 22 states and 74 bat species. A total of 23 environmental variables, including climate and spatial variables were used. Three EMS (coherence, species turnover, and boundary clumping) were analyzed in order to identify the responsible environmental gradient for structuring the communities. The gradient
composition was determined via Canonical Correspondence Analysis. The metacommunity and metaensembles of phyllostomid bats in Brazil showed geographical variations in their distribution patterns, with clementsiana model being the most observed in the analyzed regions. This pattern is evinced because the species with similar evolutionary origins present the same distribution boundaries, resulting in clear groups of species constrained in
specific biogeographical regions along an environmental gradient. The other observed patterns were gleasoniana, nested clumped with species loss, and random. For both metacommunity and metaensembles in all sampled regions, the environmental gradient was comprised by variations in latitude and temperature. The different patterns found in this study, for metacommunity and metaensembles, reflect the large environmental heterogeneity that varies among biomes in Brazilian territory.

MEMBROS DA BANCA:
Interno - 012.990.857-68 - ADRIANO LUCIO PERACCHI - UFRRJ
Externo à Instituição - CARYNE APARECIDA DE CARVALHO BRAGA - UFRJ
Presidente - 1728466 - JAYME MAGALHAES SANTANGELO
Externo à Instituição - MARCELO RODRIGUES NOGUEIRA - UENF