Banca de QUALIFICAÇÃO: MARIA GEOVANA DE MESQUITA LIMA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : MARIA GEOVANA DE MESQUITA LIMA
DATE: 30/11/2023
TIME: 09:00
LOCAL: https://meet.google.com/joi-tdvt-qnu   
TITLE:

CANARIAS ISLAND (MARANHÃO): EXPLORING THE DYNAMICS OF COLLEMBOLA COMMUNITIES IN A DISTINCTIVE ENVIRONMENT

KEY WORDS:

 Marine environment; conservation; soil fauna; mangrove; restinga.

 

PAGES: 42
BIG AREA: Ciências Biológicas
AREA: Ecologia
SUBÁREA: Ecologia Aplicada
SUMMARY:

Springtails are small arthropods widely distributed in terrestrial ecosystems, being found from tropical forests to polar deserts. In Brazil, there is a clear knowledge gap regarding this fauna, as most biomes are undersampled. The Delta of Parnaíba region constitutes a unique ecotone in the Neotropical Region, combining Caatinga, Cerrado, and marine ecosystems. In this specific environment, the Collembola fauna remains completely unknown. Thus, this project aimed to sample the Collembola fauna in the Environmental Protection Area of Delta of Parnaíba – Ilha das Canárias (EPADP) and evaluate the diversity patterns of the group and how their populations are affected by seasonal variations and other environmental factors in the region. Two samples were made using pitfall traps, one during the rainy and another during the dry season, along with gathering data on environmental variables. The sampled material was sorted, morphotyped, and fixed on slides for taxonomic identification. Ecological index analyses were conducted using the R software. A total of 5,350 specimens were collected for this study, distributed in three orders, 8 families, 23 genera, and 28 morphospecies during the two collection seasons. The ecological analyses showed that the diversity patterns of epedaphic Collembola in EPADP are strongly associated with soil moisture content and environmental heterogeneity. Areas with higher plant richness and moisture content, such as the riparian forest (lagoon), exhibited significant values of diversity (H'). The Pielou's evenness index indicated significant differences in the phytophysionomy and period interaction. Additionally, the restinga and mangrove areas of APADP shelter an adapted fauna to their environmental conditions, which shows tolerance to acid soils and high temperatures. Thus, this study provides preliminary data on the taxonomic composition and ecology of Collembola in APADP, as well as for the entire Delta do Parnaíba, which had not been explored for this fauna until now   

 

COMMITTEE MEMBERS:
Externo à Instituição - ALEXANDRE DE OLIVEIRA MARQUES - UFRN
Presidente - 1879211 - BRUNO CAVALCANTE BELLINI
Externo à Instituição - CLÉCIO DANILO DIAS DA SILVA - UFRN