Banca de DEFESA: FERNANDO SILVA DOS SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : FERNANDO SILVA DOS SANTOS
DATE: 29/05/2024
TIME: 08:30
LOCAL: h`ps://meet.google.com/upu-ijvr-pas
TITLE:

Water security analysis at Farm Mutum, in the city of Eunápolis, Bahia, Brazil

KEY WORDS:

socio-environmental conflicts; conservation; water resources; land use and occupation.

PAGES: 80
BIG AREA: Outra
AREA: Multidisciplinar
SUMMARY:

Water resources are an element of fundamental importance in the composidon of natural ecosystems, for human survival and in various contexts. In view of the above, the project's general objecdve was to analyze aspects related to water security in a rural community in the city of Eunápolis/BA, in the context of the Socio-environmental Development for Family Farming project. 5 points were selected for water collecdon within the boundaries of Associação 2 de Julho in 2019, a|er collected and transported, the samples were processed using the filter membrane technique using the procedures of the American Public Health Associadon of the United States of America, described in the Standard Methods for the Examinadon of Water and Wastewater (APHA, 2012). To obtain the results of physical, chemical and biological parameters, different methodologies were used. The Turbidimeter model 2100AN (HACH) for turbidity, the HANNA Muldparameter Probe model HI 9828 for the parameters (hydrogen potendal, temperature, dissolved oxygen, total dissolved solids, conducdvity and salinity) and laboratory steps using methodologies from the Standard Methods for the Examinadon of Water and Wastewater (APHA, 2005) for the parameters (biochemical oxygen demand, total nitrogen, total phosphorus, phosphate, dissolved phosphorus, nitrate, nitrite, total iron, chloride and ammonium), for Chlorophyll-a the Carmouze methodology was used ( 1994). Semi-structured quesdonnaires were applied for the socio-environmental characterizadon of the study area, submi`ed and approved by the Research Ethics Commi`ee under registradon CAAE 59782422.9.0000.8467. Monitoring of the flow of a secdon of the Pedra Branca river took place within the limits of Associação Nova Vitória between April 2023 and March 2024 with the aid of a one-dimensional micro-window from the MedirTM brand with serial number 7554 and propeller 54, values of flow were also obtained through the regionalizadon of the Buranhém river as it has a monitoring database, enabling possible contextualizadon with the values obtained in loco. Through mapping of land use and coverage carried out by Dialogue Forest/Forão Forest, a map of the study area was prepared, in addidon to providing data on the history of land use and coverage of the legal reserve (RL) and the permanent preservadon area (APP). The results of the microbiological parameters showed that all monitored points were contaminated. The physical-chemical parameters presented some values higher than the reguladon by resoludon 357 of Conama and/or Ordinance 888/2021 of the Ministry of Health, with the parameters being turbidity, total nitrogen, total phosphorus, dissolved oxygen and total iron. The results of the quesdonnaires applied in the Associadons made it possible to idendfy pracdces that could compromise the soil, the water table and, consequently, the health of members, such as the use of rudimentary sepdc tanks in environments where surface water is widely used without treatment, in addidon to other contexts that makes the Associadons studied suscepdble to negadve impacts due to low water availability and/or contact with water resources of inadequate quality. Flow values ranged between 1.838 m3s-1 and 0.298 m3s-1, in December 2023 there was not enough water velocity for data collecdon. The average flow and Q90 values obtained through regionalizadon were 0.8851 and 0.270 m3s-1, respecdvely. Soil use and coverage indicate a predominance of pastures (dirty and clean), areas with inidal and medium forestry stages and other uses that can negadvely impact soil and water resources when devoid of conservadon acdons. By analyzing the history of land use and coverage in RL and APP, it is possible to nodce an increase in forest vegetadon in their respecdve successional stages. Therefore, the set of variables analyzed in the two Associadons point to a non-opdmisdc scenario, in this way, members can have access to technologies that aim to increase the quality and quandty of water resources for consumpdon in the various demands required, replacing inadequate pracdces with those that aimed at soil-water conservadon.

COMMITTEE MEMBERS:
Externo à Instituição - FRANCISCO RAMON ALVES DO NASCIMENTO
Externo à Instituição - ALLISON GONÇALVES SILVA - IFBA
Externo ao Programa - 3028619 - FABIO DA SILVA DO ESPIRITO SANTO - nullExterna ao Programa - 1642871 - FLORISVALDA DA SILVA SANTOS - nullPresidente - ***.905.818-** - GABRIELA CABRAL REZENDE - USP
Interno - 1932539 - JOAO BATISTA LOPES DA SILVA
Externo ao Programa - 1563747 - MARCOS EDUARDO CORDEIRO BERNARDES - null