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During the last two hundred years many wetlands and streams in Sweden have been lowered to provide land for agriculture and forestry. Some of the coastal wetlands and streams probably served as spawning sites for certain species of fish in the Baltic Sea, but the present …
During the last two hundred years many wetlands and streams in Sweden have been lowered to provide land for agriculture and forestry. Some of the coastal wetlands and streams probably served as spawning sites for certain species of fish in the Baltic Sea, but the present …
… with 170 ha together with an urbanization of 311 ha, at the same time as wetlands and arable land has diminished and lakes has suffered from reductions. Wetlands have been reduced with 76 ha and the ones remaining are of insufficient quality from a nutrient removal perspective …
flytande reningsverk?
År 2000 godkände Sverige EUs vattendirektiv. Det innebär att vi måste arbeta för att vattnet ska ha en god kvalité och det får inte ha för höga halter av förorenade ämnen. Vid förorening kan vattnet skada människor, djur och växter. Sverige måste ständigt jobba och förbättra …
Kväve- och fosforrening i anlagda våtmarker.
… andgetting a further understanding on different kinds of constructed treatment wetlands as well astheir nitrogen and phosphorus removal processes. The wastewater from the factory consistedof process water from manufacturing and water used for cleaning, no stormwater or …
en fältstudie på känsliga marker
… is enough consideration taken to sensitive forest areas close to water or wetlands during clear cutting assignments, and to estimate the extent of damage made by forestry machines used at that time. A field and literature study is used to show how to improve and prevent the …
… of sustainable land use. In 2014, applications for funding constructed wetlands were not available. This paper examines the environmental consequences of this lack of funding in one intensively cultivated region Skåne län, southern Sweden. A review of wetland applications …
… that showed a certain tendency to act as carbon sources were the forested wetlands in R?ne?, Lule? and Bj?rk?fj?rden, Sundsvall. The most dominant plant species here were composed of more labile organic matter. If this material contributes to the organic stocks in the sediments …
… coastal carbon sink capacity. However, several studies have shown that coastal wetlands produce and emit large quantities of methane (CH4) and nitrous oxide (N2O) which may counteract the role as a sink for carbon dioxide (CO2). It is therefore important to consider this offset …
… land, effectivization of drainage systems and the declining extent of wetlands. The accumulated amount of nitrogen in water doesn’t only make it unsuitable for use by humans and cattle, but also decreases the biological diversity as well as negatively affect tourism and fish …
The aim of the study was to investigate if methane emission in a constructed wetland changed in a diurnal pattern correlating to temperature, humidity or light conditions. The gas measurements were carried out with a static chamber technique. The wetland (in Nykvarn outside of …
ett exempel på medbestämmande planering
… I have also made two small literature studies regarding planning of wetlands and grazing. One of the biggest changes, which is proposed in the area, is the reintroduction of grazing. The grazing keeps the landscape well groomed, is good for the biodiversity and become an …
… also smaller areas with young broadleaved forest, noble broadleaved forest and wetlands. We describe the Skedalaskogen both according to forest and landscape conditions and according to factors like history, paths, roads and topography. This has been done because we want the …
jämförelse mellan 1940, 1980 och 2000-talet
Populärvetenskaplig sammanfattning: Småvatten i form av dammar och våtmarker har en viktig funktion i både den terrestra och akvatiska miljön. De fungerar till exempel som buffert för näringsämnen från att flöda ut i havet och dem ökar den biologiska mångfalden bland växter och …
Syftet med detta arbete är att, med hjälp av GIS och lagerföljdsdata, utforma en metodik för modellering och förståelse av våtmarker och deras utbredning. Metodiken ska, med hjälp av GIS, underlätta och förbereda för en mera automatiserad analys av lagerföljdsdata. Detta …
