Ecotoxicological quality in sediments of Reloncaví and Corcovado gulfs, Chile

A study of the ecotoxicological quality of surface sediment was carried out on samples collected in the main fjords and interior channels between Reloncaví and Corcovado gulfs. The surface sediment samples were taken with a box corer and analyzed for organic matter content and grain size. Dissolved...

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Autores principales: Rudolph,Anny, Aguirre,Gabriela, Moscoso,Julio, Silva,Nelson, Ahumada,Ramón
Lenguaje:English
Publicado: Escuela de Ciencias del Mar. Pontificia Universidad Católica de Valparaíso 2007
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-71782007000200006
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spelling oai:scielo:S0717-717820070002000062008-01-31Ecotoxicological quality in sediments of Reloncaví and Corcovado gulfs, ChileRudolph,AnnyAguirre,GabrielaMoscoso,JulioSilva,NelsonAhumada,Ramón sediment quality fertilization assays pollution aquaculture southern Chile A study of the ecotoxicological quality of surface sediment was carried out on samples collected in the main fjords and interior channels between Reloncaví and Corcovado gulfs. The surface sediment samples were taken with a box corer and analyzed for organic matter content and grain size. Dissolved oxygen was measured in water samples taken 10 m off the bottom. The ecotoxicological evaluation of the sediments was performed using fertilization assays with gametes of Arbacia spatuligera (EPA/600/4-91/003). A fertilization rate of 95%, similar to that of the controls, was achieved. Therefore, the sediments at the sampled stations located in the middle of the channels were classified as non-toxic. Only the sediment at Station 26 (i.e., sector Dalcahue) was classified as "slightly toxic" (90 ± 41%). The samples were taken from the central zones of the studied channels and fjords. Since toxicologically these central areas are not polluted, any possible effects of aquaculture activities are expected to be more local in scopeinfo:eu-repo/semantics/openAccessEscuela de Ciencias del Mar. Pontificia Universidad Católica de ValparaísoInvestigaciones marinas v.35 n.2 20072007-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-71782007000200006en10.4067/S0717-71782007000200006
institution Scielo Chile
collection Scielo Chile
language English
topic sediment quality
fertilization assays
pollution
aquaculture
southern Chile
spellingShingle sediment quality
fertilization assays
pollution
aquaculture
southern Chile
Rudolph,Anny
Aguirre,Gabriela
Moscoso,Julio
Silva,Nelson
Ahumada,Ramón
Ecotoxicological quality in sediments of Reloncaví and Corcovado gulfs, Chile
description A study of the ecotoxicological quality of surface sediment was carried out on samples collected in the main fjords and interior channels between Reloncaví and Corcovado gulfs. The surface sediment samples were taken with a box corer and analyzed for organic matter content and grain size. Dissolved oxygen was measured in water samples taken 10 m off the bottom. The ecotoxicological evaluation of the sediments was performed using fertilization assays with gametes of Arbacia spatuligera (EPA/600/4-91/003). A fertilization rate of 95%, similar to that of the controls, was achieved. Therefore, the sediments at the sampled stations located in the middle of the channels were classified as non-toxic. Only the sediment at Station 26 (i.e., sector Dalcahue) was classified as "slightly toxic" (90 ± 41%). The samples were taken from the central zones of the studied channels and fjords. Since toxicologically these central areas are not polluted, any possible effects of aquaculture activities are expected to be more local in scope
author Rudolph,Anny
Aguirre,Gabriela
Moscoso,Julio
Silva,Nelson
Ahumada,Ramón
author_facet Rudolph,Anny
Aguirre,Gabriela
Moscoso,Julio
Silva,Nelson
Ahumada,Ramón
author_sort Rudolph,Anny
title Ecotoxicological quality in sediments of Reloncaví and Corcovado gulfs, Chile
title_short Ecotoxicological quality in sediments of Reloncaví and Corcovado gulfs, Chile
title_full Ecotoxicological quality in sediments of Reloncaví and Corcovado gulfs, Chile
title_fullStr Ecotoxicological quality in sediments of Reloncaví and Corcovado gulfs, Chile
title_full_unstemmed Ecotoxicological quality in sediments of Reloncaví and Corcovado gulfs, Chile
title_sort ecotoxicological quality in sediments of reloncaví and corcovado gulfs, chile
publisher Escuela de Ciencias del Mar. Pontificia Universidad Católica de Valparaíso
publishDate 2007
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-71782007000200006
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