Banca de QUALIFICAÇÃO: JUAN CARLOS VARGAS MENA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : JUAN CARLOS VARGAS MENA
DATA : 04/04/2019
HORA: 08:00
LOCAL: Sala de reuniões - DECOL
TÍTULO:

Bat assemblages in the Caatinga Dry Forest: diversity, species composition, temporal dynamics and habitat use in the state of Rio Grande do Norte, Brazil

PALAVRAS-CHAVES:

Chiroptera; conservation; echolocation; new records; Seasonal dry tropical forests; trophic guilds  

PÁGINAS: 1
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

Neotropical seasonally dry tropical forests present a very heterogeneous landscape with a great spatial diversity in their plant communities, but with an availability of resources (water, food, habitats) that fluctuates throughout the year. Such heterogeneity and seasonality present challenges for the different assemblages of bats that inhabit these forests, especially in semi-arid areas such as the Caatinga of Rio Grande do Norte (RN). However, the patterns of diversity and structure of bat assemblages in the state are still poorly explored, particularly in areas Caatinga (occupying 90% of the RN) and in subterranean cavities with more than 1000 registered caves. Therefore, the main objective of this thesis is to determine the patterns of diversity, structure, temporal dynamics and habitat use of different bat assemblages in the Caatinga of RN state. This work is divided in three chapters that analyze the spatial and temporal diversity patterns of the assemblages at different spatial scales, both at the landscape level and at the local level in different habitats and caves. Because RN has one of the largest information gaps in bats in Brazil, in chapter 1 I did a taxonomic revision in collections and bibliographic review to determine the gamma diversity of RN and presenting the first bat species list of the state including new records and discussion on conservation and priority research areas (already published). Chapter 2 explores the α and β (spatial and temporal) diversity, trophic structure, and its relationships with landscape components of bat assemblages through captures using mist-nets and acoustic monitoring of echolocation calls with remote detectors, in 5 different Caatinga habitats in 8 municipalities. A total of 1099 bats of 25 spp. in 55 nights were captured and acoustically detected 12 spp. in 10558 sound files. At the roost level, in chapter 3, I am monitoring 9 caves in 3 municipalities in RN to determine the alpha and temporal beta diversity of cave roosting bat ensembles. A total of 1189 individuals from 16 species on 43 days of sampling were recorded of cave bats. I expect that by understanding of the spatial and temporal dynamics of the different assemblages at the level of the landscape as well as the level of habitats and roosts (caves), besides the natural history of the different bat species occurring in the Caatinga of RN, are of great value in order to generate information more accurate to be used in future strategies and policies for the conservation of both local populations of bats and Caatinga habitats in the state.

MEMBROS DA BANCA:
Presidente - 1718346 - EDUARDO MARTINS VENTICINQUE
Interno - 1451741 - MARCIO ZIKAN CARDOSO
Interno - 1439088 - MAURO PICHORIM