The community-level response to sewage impact in intertidal mytilid beds of the Southwestern Atlantic, and the use of the Shannon index to assess pollution
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| Format: | Artículo científico |
| Sprache: | es |
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Universidad de Valparaíso
2002
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| author | Ma. Silvia Rivero |
| author_facet | Ma. Silvia Rivero |
| contents | The community-level response to sewage impact in intertidal mytilid beds of the Southwestern Atlantic, and the use of the Shannon index to assess pollution Ma. Silvia Rivero Ma. Carola Gravina Rodolfo Elías Eduardo Alberto Vallarino Ciencias de la Tierra mytilid beds univariate index intertidal sewage community structure Southwestern Atlantic A study of an intertidal mytilid community in the Southwestern Atlantic shore was carried out in order to characterize the mytilid beds response to an intertidal sewage discharge. Four Stations were sampled around the outfall, with a Control site. Total Weight and Organic Carbon content of sediments among mussels, as well as water quality variables were measured. All macrofauna were counted, and species number, Shannons diversity index and evenness were calculated. The mytilid Brachidontes rodriguezi increases it density inversely to distance to the effluent. The polychaetes Capitella capitata and Boccardia polybranchia characterized the most impacted Stations, while crustaceans (Corophium insidiosum, Jassa falcata and Caprella sp.) were dominant at medial distances. Both environmental and biological data show significative differences between Stations. The most impacted Station has the lowest species number, but the highest values of both diversity and evenness; while control Station has the lowest values of diversity and evenness. The study reject the use of univariate indices to assess organic pollution in this community, being the presence of indicator species with mytilid proportion the best tool for sewage impact assessment. 2002 artículo científico 0717-3326 https://www.redalyc.org/articulo.oa?id=47937104 es http://www.redalyc.org/revista.oa?id=479 Revista de Biología Marina y Oceanografía application/pdf Universidad de Valparaíso Revista de Biología Marina y Oceanografía (Chile) Num.1 Vol.37 |
| format | Artículo científico |
| id | redalyc_47937104 |
| institution | Redalyc |
| language | es |
| publishDate | 2002 |
| publisher | Universidad de Valparaíso |
| spellingShingle | The community-level response to sewage impact in intertidal mytilid beds of the Southwestern Atlantic, and the use of the Shannon index to assess pollution Ma. Silvia Rivero Ciencias de la Tierra mytilid beds univariate index intertidal sewage community structure Southwestern Atlantic The community-level response to sewage impact in intertidal mytilid beds of the Southwestern Atlantic, and the use of the Shannon index to assess pollution Ma. Silvia Rivero Ma. Carola Gravina Rodolfo Elías Eduardo Alberto Vallarino Ciencias de la Tierra mytilid beds univariate index intertidal sewage community structure Southwestern Atlantic A study of an intertidal mytilid community in the Southwestern Atlantic shore was carried out in order to characterize the mytilid beds response to an intertidal sewage discharge. Four Stations were sampled around the outfall, with a Control site. Total Weight and Organic Carbon content of sediments among mussels, as well as water quality variables were measured. All macrofauna were counted, and species number, Shannons diversity index and evenness were calculated. The mytilid Brachidontes rodriguezi increases it density inversely to distance to the effluent. The polychaetes Capitella capitata and Boccardia polybranchia characterized the most impacted Stations, while crustaceans (Corophium insidiosum, Jassa falcata and Caprella sp.) were dominant at medial distances. Both environmental and biological data show significative differences between Stations. The most impacted Station has the lowest species number, but the highest values of both diversity and evenness; while control Station has the lowest values of diversity and evenness. The study reject the use of univariate indices to assess organic pollution in this community, being the presence of indicator species with mytilid proportion the best tool for sewage impact assessment. 2002 artículo científico 0717-3326 https://www.redalyc.org/articulo.oa?id=47937104 es http://www.redalyc.org/revista.oa?id=479 Revista de Biología Marina y Oceanografía application/pdf Universidad de Valparaíso Revista de Biología Marina y Oceanografía (Chile) Num.1 Vol.37 |
| title | The community-level response to sewage impact in intertidal mytilid beds of the Southwestern Atlantic, and the use of the Shannon index to assess pollution |
| topic | Ciencias de la Tierra mytilid beds univariate index intertidal sewage community structure Southwestern Atlantic |
| url | https://www.redalyc.org/articulo.oa?id=47937104 |