Banca de DEFESA: ANA LILIANE DOS SANTOS ARAUJO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ANA LILIANE DOS SANTOS ARAUJO
DATE: 11/07/2024
TIME: 14:30
LOCAL: Video Conferência pelo Google Meet
TITLE:

EVALUATION OF ENVIRONMENTAL IMPACTS CAUSED BY HUMAN USE AND OCCUPATION ON ECOSYTEMIC SERVICES SURROUNDING THE MINISTER JOÃO ALVES RESERVOIR

KEY WORDS:

Ecosystem services; reservoirs; semiarid; environmental impacts; use and occupation.

PAGES: 75
BIG AREA: Ciências Agrárias
AREA: Agronomia
SUMMARY:

When relating to the nature of human beings, it generates environmental impacts, mainly to the services that are offered by ecosystems and which are of great importance for environmental balance and the quality of life of all populations. The use of ecosystem services, as well as human occupation on the banks of reservoirs, has been occurring for a long time due to the practicality of meeting their needs. However, the economic activities carried out in the area also cause impacts, which can directly affect the quality of water resources, as well as the biodiversity and aesthetics of the place, damaging the quality of life and health. These impacts will most of the time be irreversible, if mitigating measures cannot be taken during recovery of the damaged areas. Therefore, this research has as a delimited area for the development of its study the Ministro João Alves reservoir, popularly known as Boqueirão in the municipality of Parelhas/RN. This is of great importance for Seridó as it has a greater water storage capacity in the region, supplying other municipalities in addition to Parelhas, and also, in theory, it is a Conservation Unit. The objective of this work is to identify which ecosystem services are provided by Minister João Alves, and how they are being impacted. Furthermore, evaluate the environmental impacts that occur in the study area and environment through human use and occupation, and then propose mitigating actions for these problems. For this, the methodological procedures were: bibliographical survey; field control list; classification of services through CICES (v. 5.1); application of the DPSIR method to assess impacts; identification of areas without dense vegetation on the banks of the reservoir, identification and quantification of the type of buildings and specific potentials, quantification and mapping of roads close to the cemetery. The results reveal the occurrence of new services (even if only at certain periods of the year), and, in addition, the impacts that these services suffer are agreed, such as pollution of water bodies, deforestation and compromised human supply. and animals are the most visible. Furthermore, there is soil manipulation and possibly a compromise in water quality, which, as a consequence, causes low plant density. The NDVI and SAVI indices indicate that the area surrounding the dam has vegetation considered to be of low to moderate density. Through NDWI, a reduction in the reservoir's water surface was noted. Regarding the number of occupations around the reservoir, they are distributed in around 44 buildings within the 100m area created for the designation of the buffer zone. Impacts such as exposed soil, siltation, risk of contamination and increased trophic status of water were also identified in these areas of occupation. To mitigate this damage, it is important to adopt public policies aimed at coexistence with the semi-arid region, together with integrated management applied to the reservoir. It is also worth highlighting the need for inspections, monitoring of water quality and projects aimed at maintaining and restoring the study area and restoration. The development of a management plan for the construction of a Buffer Zone with appropriate legislation, thus preventing degradation, is also relevant. Therefore, it is concluded that the reservoir suffers impacts at different levels and scales, triggering serious environmental problems in the short term.

COMMITTEE MEMBERS:
Presidente - 2966354 - DIOGENES FELIX DA SILVA COSTA
Interna - 1298966 - RAQUEL FRANCO DE SOUZA
Externo à Instituição - ILTON ARAUJO SOARES - IDEMA