Data/hora: 10/06/2024 13:30:14

Provedor de dados: | 20
País: | Belgium
Título: | Estado ambiental de la zona costera Manzanillo-desembocadura del Río Cauto
Autores: | Concepción-Villanueva, J.; Arencibia-Carballo, G.; Carballo Hondal, O.; Sánchez, F.; Capetillo-Piñar, N.; Hernández Fariñas, T.; Isla Molleda, M.; Almeida, R.
Data: | 2010-05-28
Ano: | 2009
Palavras-chave: | Insecticides; Insecticides; Http://aims.fao.org/aos/agrovoc/c_3887.
Resumo: | The coastline extended between Manzanillo city and the mouth of Cauto River is a widely man-modified region by the urban-industrial-fishing activities. The present study in shows the results obtained in this zone on summer 2002, May and November 2007 and November 2008. Conditions of sediments and tenors was analyzes, starting from the effects of insecticide and other contaminant compounds, either of organic or inorganic nature, and also exposes the decreasing tendency in the production of species of economic interest, like the blank shrimp (Litopenaeus schmitti), pink shrimp (Farfantepenaeus notialis) and oyster (Cras sostrea rhizophorae). The negative relationship between the shrimp’s capture and water dam volumes was demonstrated and explained, with 0.81 correlation coefficient valor. Over the last years, organic carbon and organic nitrogen values in surface sediments (2.41 as an average) have proven the impact caused by these activities on the coastline. Samples taken during 2007 reported the presence of endosulphan, with mean concentration values of 22.6 μg/kg in the lacunar system, while no detectable endosulphan concentrations were found during samples taken from the Cauto River and its estuarine zone.
Tipo: | Preprint
Idioma: | Espanhol
Identificador: | http://hdl.handle.net/1834/3525