Bottenfaunan i Stensjöån och dess tillflöde Bokån
- en undersökning av tre lokaler
The purpose of this study has been to examine whether the bottom fauna of the stream Stensjöån, has been negatively influenced since the harvesting of peat began on the nearby peat moss Skäftesmyr or not. Comparison has been made with the results of index calculations from earlier examinations in the stream, two calculated indexes has been made, Danish fauna index and ASPT-index. The sampling was made with the kick sampling method, SS-EN 27 828. Three locations were chosen for the examination, one upstream from the peat moss, one just downstream from where the brook from the peat moss joins Stensjöån and a third location near the outlet of the stream to the lake Stensjön. The samples were sorted and the found animals identified to the taxonomic level required for the calculation of the two indexes. The results showed that two locations (Ulvsnäs and Axlarp) had unchanged very good index values, but the location near brook from the peat moss showed signs of negative influence. If it is the harvesting of peat on the peat moss that has been the cause of the negative influence or not is not covered in this study.