Assessment of Lipid Compounds and Phosphorus in Mangrove Sediments of Santa Catarina Island, SC, Brazil

نویسندگان

  • Luciana Mater
  • Marcelo R. Alexandre
  • Fabrício A. Hansel
  • Luiz A. S. Madureira
چکیده

Lipídios provenientes de sete estações sedimentares foram usados para avaliar fontes de matéria orgânica em dois manguezais localizados na Ilha de Santa Catarina, SC. O manguezal de Ratones encontra-se em uma área de preservação permanente, com pouca influência humana. Em contraste, o manguezal do Itacorubi tem sofrido sérios impactos por atividades antrópicas devido à sua proximidade da cidade de Florianópolis. Os maiores níveis de carbono orgânico (2,13 mmol g) e fósforo total (14,9 μmol g) foram encontrados em Ratones. Entretanto, o percentual de fósforo inorgânico determinado no manguezal de Itacorubi (84%) foi maior do que o de Ratones (58%), possivelmente devido à contaminação urbana. A importância do aporte de esgoto doméstico para o manguezal do Itacorubi foi avaliada a partir da concentração do coprostanol que variou, em média, de 7,7 ng g em Ratones para 1,42 μg g no Itacorubi. Esse nível elevado é compatível com valores encontrados em outros ambientes contaminados.

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تاریخ انتشار 2004