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The potential leakage of phosphorus from sediment in Lake Bornsjön, south western Stockholm
Lake Bornsjön is situated 30 km southwest of Stockholm in a rift valley lake and consist three basins outstretched in northwest-southeast direction. The surface area is 6,7 km2 with a maximum depth of 18,3 meters, a mean depth of 9,8 meters and a retention time of the water of …
provtagning, analys och förslag till åtgärder
… When the mining activities ceased the pit was filled with water forming a pit lake. Waste rock dumps, which are partly contaminated with the sulphide mineral pyrite, and covered by till material surround the pit lake. Despite previous remediation measures, there is still a …
Bedömning av sulfidmalmgruvan Enåsens eventuella påverkan på sjöns vattenkvalitet
… hazard due to its tendency to cause acid waters and heavy metal leakage. Lake Ensjön is situated one kilometer from the mine area. Due to the hydrological conditions it was not expected to receive inflowing water from the mining area. A study done in 2005 showed high amounts of …
… that control the solubility of Hg and the production of MeHg in a contaminated lake sediment. The lake Ala-Lombolo, Kiruna municipality, is well-known to be contaminated by mercury from different sources. Sediment cores were sampled at three different locations (N, SW and SE) in …
… mercury in fish, set by health authorities, is exceeded in about half of the lakes in Sweden. Methyl mercury (MeHg) is the most toxic form of mercury and accumulates in fish. Therefore transformation of inorganic mercury (Hg) to methylmercury (MeHg) is an important process that …
Samband mellan sänkningsnivåer och vattenkemi i sjöar på sulfidrika sedimentjordar
Lake lowering in sulphide-rich areas is currently a major environmental impact for surface water. This study focuses on whether there is a relationship between a gradient of lake lowering and surface water impacts in areas of sulphide-rich sediments, in order to better …
En undersökning av kvicksilverkoncentrationer i daterat bottensediment.
… of this study was to examine the current and historic mercury(Hg) load of the lake Storjuktan due to its recent exposure to a local potential source of Hg in form of the Sulphide mine Blaikengruvan(2006) and an earlier potential sources of Hg-load, the damming of the …
… A warmer climate in many ways is associated with changing conditions for lake ecosystems. An expected higher water temperature and a stronger summer stratification of the water column increases the risk of anoxic conditions at the lake bottom. Thus anoxic conditions are likely …
… samples from the area indicated that the peat surrounding the river and the lake Fursjön, has intermediate levels of nitrogen, but high level of ash constituents and relatively high pH values. The water in the stream and the lake also showed high pH and alkalinity, but no signs …
The plants in the genus Elatine are characteristic for oligo and mesotrophic lakes. This study focuses on Elatine hexandra one of the four species in Sweden. It is stated as vulnerable by the National Environment Agency and a conservation plan with guidelines to preserve the …
… by moving one of the basin walls further out in to the nearby lake, Naalojärvi. A lake investigation has been preformed, with focus on parameters important for lake water-quality, in sediments and open water. The results have been evaluated and classified based on the …
en fallstudie hur miljöpåverkan av en dagvattendamm intill ett Natura 2000-område kan bedömas
… areas stormwater can consists of major amounts pollutants and when reaching a lake or watercourse it can cause damages on vegetation and animals. Therefore it is important to treat polluted stormwater before it reaches the recipient. The municipality of Örebro have since the …
… risk assessment will be attempted for Nerån and its outlet in the lake Filmsjön. The method went through steps and started with data analyses after which calculations for new mass balances were made. Beginning by acknowledge the increase of metals from the groundwater, both …
förslag till anläggning för ekologisk hantering samt metodöversikt
… in Steningedalen nature reserve, which streches from central Märsta toward lake Mälaren. The creek of Rosersbergsbäcken has its natural outflow into the stream of Märstaån, which runs through Steningedalen valley. But it is led into a culvert a little further upstream. The idea …
studier av Vattenparken i Enköpings kommun
… Swedish Environmental Protection Agency. Previous studies of stormwater- and lake sediments from Uppsala County had metal concentrations of the same magnitude as the sediments in Vattenparken except for Pb, which was found in higher concentrations in Vattenparken. According to …
