Assessment of Lipid Compounds and Phosphorus in Mangrove Sediments of Santa Catarina Island, SC, Brazil
نویسندگان
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.
منابع مشابه
The Effect of Water Pressure and Chlorine Concentration on Microbiological Characteristics of Spray Washed Broiler Carcasses
The objective of this study was to evaluate the efficiency of water pressure and concentration of dichloromethane after the evisceration system under the fecal decontamination of chicken carcasse surfaces with and without apparent contamination. From a total of 322 carcasses, 50% were intentionally added chicken droppings in an area of more than 2 cm2 and the rest of carcasses were kept with...
متن کاملDiagnosis of the noise emission in a plastic recycling plant located in the municipality of Caçador, Santa Catarina, Brazil
Background: With industrial development, many production processes emit high levels of noise, presenting problems for society. This emission causes an environmental impact on employees and also on the surrounding environment. Materials and Methods: The present study was performed with the objective of analyzing the noise emission in a plastic recycling plant in the municipality of Caçador, San...
متن کاملSource correlation of biomarkers in a mangrove ecosystem on Santa Catarina Island in southern Brazil.
The relative distribution of several compounds identified in four samples of recently deposited sediments of the Itacorubi Mangrove located on the Santa Catarina Island, southern Brazil, was compared with similar data on compounds extracted from fresh leaves of three mangrove species (Avicennia schaueriana, the dominant species in the area, Rhizophora mangle and Laguncularia racemosa) and the G...
متن کاملSanta Catarina Island mangroves 4 – xylophilous basidiomycetes
Itacorubi, Ratones, Rio Tavares and Saco Grande are natural mangrove forests in the western part of Santa Catarina Island, in southern Brazil. Thirty-three basidiomycetes were identified during a survey of xylophilous basidiomycetes in these mangrove forests from May 2005 to August 2006. The species are distributed among 9 families and 24 genera. Fifteen species are new records from mangrove ...
متن کاملThe Power of Classic Music to Reduce Anxiety in Rats Treated with Simvastatin
Introduction: This study was designed to investigate the effects of music in Wistar rats after sub-chronic treatment of simvastatin. The rats were orally administered with either simvastatin or saline (controls). After 4 weeks of drug treatment, the rats were selected for behavioral studies. The rats were exposed to music 24 hours before behavioral tests (Mozart’s piano sonata, KV361, Largo). R...
متن کامل