{"refrec":{"BRefID":311152,"RR":"<b>Carreño Rosario, H.N.</b> (2019). Contaminación por Coliformes totales y <i>Escherichia coli</i> en ostiones (<i>Crassostrea columbiensis</i>), concesión de manglares, Puerto Salinas - Golfo de Guayaquil- Ecuador. Ir Thesis. Universidad de Guayaquil, Facultad de Ciencias Naturales: Guayaquil.  67 pp.","BEntID":303513,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". Ir Thesis. Universidad de Guayaquil, Facultad de Ciencias Naturales: Guayaquil.  67 pp.","DocTypID":5,"DocType":"Book/Monograph","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Carreño Rosario, H.N.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Carreño Rosario, H.N.","Englishabstract":"In the present research work, the main objective is to determine the level of contamination by total coliforms and Escherichia coli, using as a bioindicator of the environmental conditions in the mangroves, the bivalve mollusc species Crassostrea columbiensis that lives attached to the roots of trees of red mangrove (Rhizophora sp). In the mangroves that are under the Custody of the community of Puerto Salinas within the Gulf of Guayaquil Estuary, eight sampling points were established in the month of November 2018, after a microbiological analysis resulted in the absence of E. coli, however it was evidenced that there is contamination by total Coliforms in the eight sampling points over the maximum permissible limit, showing a higher contamination index for those located closest to the community of Puerto Salinas, where it is located directly to the estuarine system, affecting not only water quality, but also to species with filtering characteristics that also develop in the mangrove ecosystem, concluding that the species of bivalves Crassostrea columbiensis can’t be considered safe for human consumption without prior treatment of purification before sale or consumption.","AbstractOtherLang":null,"BibLvlCode":"M","StandardTitle":"Contaminación por Coliformes totales y <i>Escherichia coli</i> en ostiones (<i>Crassostrea columbiensis</i>), concesión de manglares, Puerto Salinas - 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