Sammendrag
This report assesses possible environmental impacts from the new channel and marina that is planned constructed at Kileneset in Søgne municipality. Hydro-physical parameters, eelgrass meadows, communities in sediments and in the littoral zone were examined in Indre Kilen and Ytre Kilen 18.-19. August 2014.
A regular mixing of watermasses takes place in Ytre Kilen and oxygen is present throughout the water column. In Indre Kilen the lower water layer (depth >7m) is stagnant without oxygen. At present, a narrow channel, with a strong tidal current, connects Ytre Kilen with the ocean.
Sediment samples were analyzed from two stations. The fauna was dominated by a few, tolerant species and samples from the most shallow location (1,5 m) smelled from hydrogen sulfide. Large meadows with dense eelgrass vegetation were recorded in Indre Kilen and Ytre Kilen. Fast growing, opportunistic algae was abundant, both as epiphytes on the eel grass and on the sea floor. Benthic communities in the littoral zone were studied at five stations and the highest abundance of species and highest density of individuals was found within the tidal channel.
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