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Previous issue date: 2011-08-08 / The municipality of Guamar? is located on the north coast of RN, Salineira zone, with
a land area of 259 km2 and a population of approximately 12,500 inhabitants (IBGE, 2010).
Presents strong morphological instability caused mainly by the influence of human activities
in the region. The present study aims to assess the existing levels of salts in the springs of the
region, by evaluating the electrical conductivity, pH, salinity, chlorides, hardness, calcium,
magnesium and heavy metals in the water. The collection and analysis methods adopted in the
survey are based on APHA (2005). The electrical conductivity, salinity and chloride behaved
similarly throughout the study. Some points suffered the direct effect of the salt ponds and
others. Given the existence of a drainage ditch between the saline and monitored region, there
was little change in the environment, including the native vegetation. The opposite situation
occurred in farms where the region is fully committed local vegetation and water holes and
wells used in the past for domestic use are practically disabled (high salt content). In Rio
Miassaba formation of an estuary is reversed, with the farther out from the sea showing higher
salt concentracions, which may be associated with the discharge of organic matter and natural
evaporation rate. In periods of no rainfall had a few points higher than the levels of salts
found in seawater and may be associated with high evaporation in the region. Detected a
positive factor is the high resilience and reducing salt, after periods of rainfall incidence / O munic?pio de Guamar? est? localizado no litoral norte do RN, subzona salineira, com
uma ?rea territorial de 259 km2 e popula??o de aproximadamente 12.500 habitantes (IBGE,
2010). Apresenta acentuada instabilidade morfol?gica ocasionada principalmente pela
influ?ncia de atividades antr?picas na regi?o. O presente estudo tem por finalidade avaliar os
?ndices de sais existentes nos mananciais da regi?o, atrav?s da avalia??o da condutividade
el?trica, pH, salinidade, cloretos, dureza, c?lcio e magn?sio na ?gua. As metodologias de
coletas e an?lises adotadas na pesquisa est?o baseadas no APHA (2005). A Condutividade
El?trica, a Salinidade e o Cloreto apresentaram comportamento semelhante ao longo da
pesquisa. No estudo observou-se que alguns pontos sofrem influ?ncia direta dos viveiros e
outros das salinas. Tendo em vista a exist?ncia de uma vala de drenagem entre a salina e a
regi?o monitorada, observou-se pouca altera??o no meio, inclusive na vegeta??o nativa.
Situa??o inversa ocorreu na regi?o dos viveiros onde a vegeta??o local est? completamente
comprometida e os po?os e cacimbas, utilizados no passado para uso dom?stico estarem
praticamente desativados (alto teor salino). No Rio Miassaba h? forma??o de um estu?rio
invertido, com os pontos mais distanciados do mar apresentando concentra??es salinas
maiores, o que pode estar associado ? descarga de mat?ria org?nica e taxa de evapora??o
natural. Em per?odos de aus?ncia de chuvas alguns pontos apresentaram teores de sais
superiores aos encontrados na ?gua do mar, podendo ser associado ? alta taxa de evapora??o
na regi?o. Um fator positivo detectado ? o alto poder de recupera??o e redu??o salina, ap?s
per?odos de incid?ncia pluviom?trica
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/17654 |
| Date | 08 August 2011 |
| Creators | Ferreira, Douglisnilson de Morais |
| Contributors | CPF:50073788449, http://lattes.cnpq.br/7275955550556570, Silva, Djalma Ribeiro da, CPF:13893734449, http://lattes.cnpq.br/2791074318745945, Ara?jo, Andr? Luis Calado, CPF:37695045268, http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4799320A6, Costa Neto, Le?o Xavier da, CPF:24181790444, http://lattes.cnpq.br/1059276496317561, Melo, Jailson Vieira de |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Qu?mica, UFRN, BR, F?sico-Qu?mica; Qu?mica |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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