86 uppsatser · sida 1 av 6
Statusbedömning enligt EU:s ramdirektiv för vatten
… quality of River Lillån based on water chemistry analyses and benthic fauna investigations. The aim was also for the benthic fauna to compere different samplingsites and sampling methods with each other in order to see how the species composition changes in the river, and to see …
en utvärdering
… hos utter har Trafikverket och Länsstyrelserna satsat på att bygga anpassade faunapassager vid broar och vägtrummor. Enligt Naturvårdsverkets åtgärdsprogram för utter ska dessa utvärderas med tanke på effekt, kostnad och regionala anpassningar. Syftet med min studie var att …
… Inventory" in the county of Värmland. It was also determined if the benthic fauna composition had been changed downstream from the tracks, in the parts of the stream that had been affected by erosion. This data was then compared with the parts of the stream that had not been …
Ett examensarbete i samarbete med NQA Nordic AB
… which ISO 14 001 defines as the environment: land, water, air, flora, fauna, natural resources and man and his collaboration with those. The chosen organisations all have a connection to the environment, directly or indirectly. The authorities are chosen from Sweden’s 16 …
… this study was to investigate how elevated levels of heavy metals affect the faunal species composition, abundance and species-diversity. The bentic macroinvertebrate fauna in the highly polluted lake Tisken was compared with the bentic macroinvertebrate fauna in the unpolluted …
… Våtmarkerna inventerades vid flera tillfällen för att flora och fauna som är synliga vid olika tider under året skulle komma med i inventeringen. Inventeringarna låg sedan till grund för förslag på lämpliga inriktningar för den biologiska mångfalden i de olika våtmarkerna …
… is a moderate humic mesotrophic lake that is not acidified. The fish fauna was investigated by using a standard method for sampling freshwater fish with multi mesh gill nets. The fish fauna was diverse with perch, pike, tench, common whitefish, and roach. Perch and roach …
- en undersökning av tre lokaler
The purpose of this study has been to examine whether the bottom fauna of the stream Stensjöån, has been negatively influenced since the harvesting of peat began on the nearby peat moss Skäftesmyr or not. Comparison has been made with the results of index calculations from …
Förstudie och datainsamling
A fauna passage is a way for animals to cross roads separated from the traffic. In Sweden, there are an unknown number of passages with different functions and appearances. These passages would, with the question ?Which fauna passages can be found in Sweden, and how well do they …
How animals cross roads
A fauna passage is a way for animals to cross roads separated from the traffic. In Sweden, there are an unknown number of passages with different functions and appearances. These passages would, with the question ?Which fauna passages can be found in Sweden, and how well do they …
… to compare to the restored site. The method used for sampling of benthic fauna in the stream was kick sampling. ASPT, Berger-Parker and Renkonen-indices were used to find out if there was any difference between the reference areas and the restored area. In addition to indices …
indirekta effekter på bottenfaunan nedströms
This research aims to investigate the effects that dredging may have on benthic fauna. The dredging took place in the stream Ireån on northern Gotland during the early summer 2010. My area of research was taking place in a scenic area downstream in Ireån close to the Baltic Sea …
Med faunapassage
In Sweden there are 1894 small-scale hydropower plants in operation, which together generate 4.3 TWh of electricity per year according to Swedish hydropower compound (SVKF, 2011). This corresponds to the annual consumption of about 860,000 Swedish households (based on an annual …
Mina mönster rör sig kring naturen, skogen och dess invånare.Flamingon står framför en blomma som slingrar sig uppåt, bredvid ser hjorten på oss med en bestämd blick och en snigel rör sig långsamt fram över en yta av växtlighet. Det här är min egen värld som jag skapar med …
… with several indices and parameters of the biological quality elements benthic fauna, diatoms and fish. Then, values and classes for indices and parameters were compared across water bodies where freshwater pearl mussels were recorded as being present or not present. The …
