Essays about: "flodpärlmussla"

Found 4 essays containing the word flodpärlmussla.

1. 1. Freshwater pearl mussel as indicators of Swedish streams - a comparison between freshwater pearl mussel and biological quality elements

   University essay from SLU/Dept. of Aquatic Sciences and Assessment

   Author : Kristin Forsell; [2014]
   Keywords : flodpärlmussla; biologiska kvalitetsfaktorer; freshwater pearl mussel; biological quality elements;

   Abstract : The freshwater pearl mussel (Margaritifera margaritifera) is a large freshwater mussel. Because of its sensitivity to human impact, such as eutrophication, acidification and alterations of hydromorphology, the species is considered as a robust indicator of stream water quality and biodiversity. READ MORE

3. 2. Bottensubstratets inverkan på föryngring av Flodpärlmussla

   University essay from SLU/Dept. of Forest Ecology and Management

   Author : Viktor Boström; Hjalmar Holm; [2012]
   Keywords : Margaritifera margaritifera; freshwater pearl mussel; regeneration; bottom substrates;

   Abstract : The freshwater pearl mussel (Margaritifera margaritifera) is threatened throughout its range. There has been a substantial decline of the species and one major reason is habitat degradation. READ MORE

4. 3. Sediment Requirements for Freshwater Pearl Mussel (Margaritifera margaritifera) Recruitment : Sedimentkraven för Rekrytering hos Flodpärlmussla (Margaritifera margaritifera)

   University essay from Institutionen för natur och miljö

   Author : Katrin Wahlström; [2007]
   Keywords : Biology; Ecology; Biologi; Ekologi;

   Abstract : Abstract The sediment requirements for freshwater pearl mussel (Margaritifera margaritifera) recruitment, in 18 rivers in the counties of Västra Götaland, Örebro, Värmland and Västmanland in Sweden, were investigated. The top 4 cm of sediment in the rivers was analysed in terms of size, distribution and organic compound within the fine sediment. READ MORE

5. 4. Is there a link between forestry and the decline of the freshwater pearl mussel Margaritifera margaritifera in central Sweden?

   University essay from Fakulteten för samhälls- och livsvetenskaper

   Author : Alice Jensen; [2007]
   Keywords : ecology; forestry; Sweden; mussel; freshwater pearl mussel; GIS; ekologi; skogsbruk; Sverige; mussla; flodpärlmussla; GIS;

   Abstract : The freshwater pearl mussel, Margaritifera margaritifera, is a species in decline throughout its entire range in Europe and North America. In Sweden, the species has disappeared from one third of the watercourses it was found in a century ago, and recruitment occurs in only one third of the approximately 400 populations of mussels remaining. READ MORE