Effects of changes in sewage pollution on soft-botiom macrofauna communities in the inner Oslofjord, Norway
- 20 June 1990
- journal article
- Published by Taylor & Francis in Sarsia
- Vol. 75 (2) , 169-190
- https://doi.org/10.1080/00364827.1990.10413446
Abstract
The macrobenthic fauna of Vestfjorden, inner Oslofjord was sampled in 1980 and 1985 at 19 stations. The aim of this study was to detect possible faunal changc:s following the start of a sewage treatment plant in 1982. The faunal data were analyzed by a variety of methods including diversity indices, log-normal distribution of individuals among species and classification and ordination analysis. The results show a decline in species number and abundance which may be related to increased pollution. However, the diversity and the evenness have increased. The area within a radius of 2-3 km from the outlet of the treatment plant shows clear pollution effects while the marginal areas show improved conditions.Keywords
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