Banca de QUALIFICAÇÃO: RAFAELA DE SOUSA GOMES GONÇALVES

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : RAFAELA DE SOUSA GOMES GONÇALVES
DATE: 28/09/2021
TIME: 10:30
LOCAL: on-line
TITLE:

Sepetiba Bay: Spatial and temporal assessment of the ichthyofauna and their environmental relationships

KEY WORDS:

coastal fish, functional diversity, beta diversity, environmental variables

PAGES: 67
BIG AREA: Ciências Biológicas
AREA: Zoologia
SUBÁREA: Zoologia Aplicada
SUMMARY:

Shallow water estuarine environments have many habitats that favor colonization and
use by different fish species. These coastal ecosystems are undergoing increasingly
anthropogenic impacts resulting from industrial and urban developments in the
surroundings, resulting in a growing loss of biodiversity, which may be accompanied by
the losses of important ecological functions. Investigating the patterns and processes
that act on biodiversity is essential to obtain a more detailed view of the dynamics and
roles of communities in the ecosystems, and for this, short and long-term studies are
essential. Studies have mainly addressed the taxonomic structure, requiring a more
integrated approach, aiming to understand the dynamics and roles of functional
groups in space and time. The present study, divided into two chapters, aims to
understand the spatiotemporal dynamics of the ichthyofauna of shallow areas in a
tropical bay in a growing process of environmental change, exploring taxonomic and
functional aspects. In chapter 1, we seek to describe the relationship between beta
diversity and environmental heterogeneity, to test the hypothesis that environmental
heterogeneity would be positively related to beta diversity. In Chapter 2, we assess
temporal changes (1983-1985, 1999-2001, and 2017-2019) in taxonomic and
functional indices. Previous studies have already reported a decline in the fish richness
in the shallow areas of Sepetiba Bay, but the investigation of how the functional
groups have been affected has not yet been investigated. We tested the hypothesis
that functional diversity indices also changed over time, as a result of environmental
changes in the recent decades. We hope to contribute to the understanding of the
functioning of the ecosystem, aiming at establishing measures for the biodiversity
conservation.

BANKING MEMBERS:
Externa à Instituição - BIANCA POSSAMAI - FURG
Externa ao Programa - 106.191.167-57 - ELLEN MARTINS CAMARA - UFRRJ
Interno - 387200 - FRANCISCO GERSON ARAUJO
Interno - 387289 - ILDEMAR FERREIRA