Miljödammars funktion som kväve- och fosforfälla samt som bevattningsdamm i Sölvesborgs kommun

Abstract: A study was made on four environmental ponds in Sölvesborgs municipality. The reason forthis was to see if the ponds had fulfilled some of the questions that was mentioned in theproject “Rädda Hanöbukten”. The questions were as following; do the environmental pondsdecrease the leakage of nitrogen and phosphorus into Hanöbukten, do the ponds decrease theuse of groundwater in Sölvesborgs Municipality and are there any restrictions on what thewater in the ponds is allowed to be used for. In order to answer these questions aquestionnaire was made and interviews were held. Also data from 19 different test sitesaround Sölvesborg were analysed. Discussions were held concerning how well the pondsworked as a trap for nitrogen and phosphorus. Possible connections between the soil, thesurrounding environment, precipitation and the collected data were studied. In thequestionnaire and in the interviews it was asked if there existed any restrictions on how to usethe water from the ponds. The last point that was examined was if the ponds had managed todecrease the use of groundwater in Sölvesborg municipality. The results showed that therewere no restrictions on how to use the water from the ponds. It also showed that the ponds hadnot decreased the use of groundwater significantly, but that they had hindered an increase inthe use of groundwater. Furthermore the results showed that the ponds worked well as a trapfor nitrogen and phosphorous but how large the effects were could not be seen in the results.