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The biological diversity of Swedish lakes and rivers is low compared to southern Europe. Our knowledge of how many limnic species have disappeared is inadequate. More knowledge of the composition of species in freshwater ecosystems is needed to detect and
There is a large number of lakes and rivers in Sweden, and due to the low population density, the majority of these are not influenced by point sources of pollution.
The importance of diffuse sources has long been known. The Water Framework Directive demands that the status of all water bodies is established and reported. This has accelerated appreciation of the importance of diffuse sources for release of nutrients, toxic substances and other contaminants harmful to the environment. It has also increased the use of models in determining ecological status, resulting in several projects using monitoring data, land use, discharge, etc.
The biological diversity of Swedish lakes and rivers is low compared to southern Europe. Our knowledge of how many limnic species have disappeared is inadequate. We are in the process of documenting the occurrence of species and are studying threats posed by the introduction of alien species and impacts on habitats. More knowledge of the composition of species in freshwater ecosystems is also needed to detect and follow the expected effects of the climate changes.
For references, please go to https://www.eea.europa.eu/soer/2010/countries/se/freshwater-why-care-sweden or scan the QR code.
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