Effects of changes in sewage pollution on soft-botiom macrofauna communities in the inner Oslofjord, Norway

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.

This publication has 18 references indexed in Scilit: