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Effects of sediment disturbance caused by bridge construction on macrobenthic communities in Asan Bay, Korea.
J Environ Biol ; 2008 Jul; 29(4): 559-66
Article Dans Anglais | IMSEAR | ID: sea-113960
ABSTRACT
Changes in soft-bottom macrobenthic communities and the effects of anthropogenic disturbances were studied. We compared biological and environmental samples during and after bridge construction (DBC and ABC). Significant differences were detected in sediment composition at three stations, although hydrographic conditions were similar for DBC and ABC samples. From DBC to ABC, the number of species and density of macrobenthic fauna tended to decrease, whereas biomass increased. Non-metric multidimensional scaling (MDS) analysis identified two sampling period groups from eight temporal samples, plus three station groups and one station from 12 spatial samples, which corresponded to macrobenthic faunal assemblages and theircharacteristic species. In addition, contributions of variables to similarity showed that the DBC and ABC samples differed significantly in the distribution of characteristic species and proportion of polychaete trophic groups, suggesting that the macrobenthic community structure was a factor affecting sediment disturbance caused by bridge construction.
Sujets)
Texte intégral: Disponible Indice: IMSEAR (Asie du Sud-Est) Sujet Principal: Polluants chimiques de l'eau / Dynamique des populations / Surveillance de l'environnement / Écosystème / Sédiments géologiques / Conception et construction de locaux / Géographie / Déchets industriels / Invertébrés / Corée Type d'étude: Étude pronostique Pays comme sujet: Asie langue: Anglais Texte intégral: J Environ Biol Année: 2008 Type: Article

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Texte intégral: Disponible Indice: IMSEAR (Asie du Sud-Est) Sujet Principal: Polluants chimiques de l'eau / Dynamique des populations / Surveillance de l'environnement / Écosystème / Sédiments géologiques / Conception et construction de locaux / Géographie / Déchets industriels / Invertébrés / Corée Type d'étude: Étude pronostique Pays comme sujet: Asie langue: Anglais Texte intégral: J Environ Biol Année: 2008 Type: Article