Manguezal Do Itacorubi (Florianópolis, Sc): Uma Revisão Da Disponibilidade De Dados Ecológicos Visando O Direcionamento De Novos Estudos

Abstract

RESUMOO Manguezal do Itacorubi encontra-se em tal proximidade a núcleos urbanos de Florianópolis, que vem sendo utilizado para atender ao processo de expansão urbana através de atividades, como descarga de esgoto e aterramento. Desde o fim da década de 1960, pesquisas têm caracterizado esse ambiente, estudando o espaço funcional do ecossistema, as comunidades vegetais, animais e microbiológicas, os processos físicos, químicos e biológicos, além do manejo e impactos sobre o ecossistema. No presente trabalho, foi efetuado um levantamento bibliográfico dos dados disponíveis relacionados à ecologia do Manguezal do Itacorubi, com o objetivo de identificar os estudos que existem e quais precisam ser feitos para resultar na melhor compreensão do ambiente para seu uso sustentável. Apesar da certa abundância de dados sobre alguns fatores bióticos, certos grupos bióticos representativos não foram estudados ou o foram de modo insuficiente, além de nem sempre o estudo ser atual. Quanto aos dados abióticos, embora haja boa disponibilidade de dados sobre as mais diversas variáveis, estão levemente defasados, podendo não refletir com precisão as mudanças ocorridas nos últimos anos devido ao grande incremento urbano, principalmente pela construção de um Shopping Center. Assim, o monitoramento temporal periódico de dados físicos, químicos e biológicos é de suma importância para avaliação do ambiente, fundamental para futuras propostas de conservação, manejo e educação ambiental acerca do Manguezal do Itacorubi e da bacia hidrográfica que o inclui. Palavras-chave: Manguezais e marismas, levantamento de dados, fatores bióticos e abióticos, conservação, qualidade de água. ABSTRACT THE MANGROVE SWAMP OF ITACORUBI, FLORIANOPOLIS, BRAZIL: A REVIEW OF THE AVAILABLE ECOLOGICAL DATA FOR DIRECTING NEW STUDIES.The mangrove of Itacorubi is so close to the city centre of Florianopolis, Brazil, that it is directly exploited by the expanding city, for example as repository of wastes and debris. Since the late 1960s the mangrove was the object of studies trying to characterize the local ecosystem, plant and animal biota, physicochemical and biological processes, and management strategies to minimize human impact. The present paper presents a bibliographic survey of the available ecological data on the mangrove swamp of Itacorubi, while appointing areas in need of further investigation. Although the local biota was relatively well studied, some representative living groups were overlooked, and the employed methods are often outdated. Local abiotic parameters were relatively well documented, but most available data is outdated and not reflecting later alterations deriving of urban expansion (eg. construction of a nearby shopping mall). Monitoring physical, chemical and biological parameters in the Itacorubi mangrove is paramount for building robust panorama of the local ecological conditions as to properly evaluate proposals for the conservation, management and ecological education at the mangrove and its hydrographic bay.

Occurrence of Sexual Hormones in Sediments of Mangrove in Brazil

“…When detected, the highest concentration was 129.75±3.89 ng/g and the lowest concentration was 2.02±0.06 ng/g. Interestingly, the presence of EE2 was significantly close to populated areas, and the presence of women is about 50% in the total population and most of them are under 25 years old (Sovernigo 2009). …”

“…3) is the type of mangrove forest-mixed basin, located between coordinates 27°34′14″-27°35′31″ S and 48°30′07″-48°31′33″ W, is in the Central Sector West of the Island of Santa Catarina, Brazil, in the estuarine area of the Itacorubi Basin. It has an area of approximately 2,844.6 ha, being fed by Setaozinho and Itacorubi rivers (Sovernigo 2009). The Itacorubi mangrove is surrounded by many residential neighborhoods.…”

“…The mangrove studied is located in an urban area whose population has increased in a disorderly way in recent years. The study area already has records of frequent contamination by untreated sewage (Sovernigo 2009). The concentration of estrogens found in Itacorubi mangrove are shown in Table 2.…”

Degradation and conservation of Brazilian mangroves, status and perspectives

“…In the Northeast region, several urban Parks with mangroves were created, which save mangroves still not devastated by shrimp culture. Other example exists in Florian opolis (SC) (Sovernigo, 2009) (Table 1). South and Southeast are the most degraded areas, but some forests are relatively well preserved, as some regions between São Paulo (SP) and Paran a (PR) States (Fig.…”