Banca de DEFESA: RAISSA CAVALCANTE PINTO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : RAISSA CAVALCANTE PINTO
DATE: 04/08/2023
TIME: 14:00
LOCAL: Remoto através de plataforma google meet
TITLE:

MEIOFAUNA COMMUNITY STRUCTURE AS AN INDICATOR OF POLLUTION BY SEWAGE: the state of the art and the responses to sewage entering urban sandy beaches 

KEY WORDS:

Nematoda. Washout. Scientometrics. bibliometrix. biblioshiny

PAGES: 144
BIG AREA: Ciências Biológicas
AREA: Ecologia
SUBÁREA: Ecologia Aplicada
SUMMARY:

Meiofauna, an ecological group formed by organisms of diverse invertebrate taxa with intermediate size between micro- and macrofauna, is an effective tool in the assessment of environmental impacts in aquatic environments due to several factors, many of which are related to their benthic way of life. Based on this information, this dissertation was developed in two chapters: chapter 1 brings a scientometric review on the application of meiofauna as an environmental indicator in cases of sewage pollution and chapter 2 is an application of meiofauna as an indicator of the condition of sandy beaches that receive clandestine sewage dumping. For the development of chapter 1, the Scopus and Web of Science journal databases were consulted, and for the analysis of the data obtained, the R bibliometrix package and its graphic support tool biblioshiny were used. As a result, 63 articles published between 1930 and 2021 were thoroughly evaluated. Most of these articles were developed on sandy beaches receiving domestic sewage, and Nematoda was the dominant group in these researches. It was shown that there are few articles published in the area and that the largest groups of researchers are geographically restricted, with a poor collaboration network. Chapter 2, in turn, was developed in dissipative and reflective beaches of the city of Maceió, Alagoas, where there are washouts, dumping of rainwater effluents polluted by clandestine sewage. The study aimed to assess the effects of beach morphodynamics on meiofauna in direct contact with the fouled tongues, combined also with the effect of the spatial distance of the effluent and the verticality of the communities in the sediments. For this purpose, biological samples were collected from two dirty tongues of each beach type in a dry period in 2021, as well as material and data samples, such as sediment and salinity, for correlation analyzes. As a result, 17 taxonomic groups were found, the most abundant on all beaches being Nematoda. The types of beaches showed significant differences, including with respect to distances from the dirty tongue and strata. The factors that most influenced the dissimilarity of the groups were the number of total coliforms and E. coli, the asymmetry and degree of grain sorting, and salinity. The reflective beach was the one that showed the most negative response to the impacts promoted by sewage, including the decrease in meiofauna density in the upper layers of the sediment. It was proven that the beaches analyzed suffer from the impact of sewage pollution

BANKING MEMBERS:
Presidente - 1544255 - TACIANA KRAMER DE OLIVEIRA PINTO
Interno(a) - 2024367 - MELISSA FONTES LANDELL
Externo(a) à Instituição - ANDRE MORGADO ESTEVES
Externo(a) à Instituição - PAULO JORGE PARREIRA DOS SANTOS