Essays about: "castor fiber"

Showing result 6 - 8 of 8 essays containing the words castor fiber.

1. 6. Retention of nitrogen in beaver ponds depends on colonization history : use of Fontinalis antipyretica as an integrative sampler of nitrogen

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

   Author : Anders Johansson; [2015]
   Keywords : beaver; ; castor fiber; colonization history; fontinalis antipyretica; nitrogen retention; nitrogen; recolonization; Sweden;

   Abstract : Beaver ponds affect the environment in many ways and beaver ponds have the potential to retain macronutrients. The retention of nitrogen in beaver ponds has mainly been suggested to be due to denitrification by bacteria. READ MORE

3. 7. Effects of beaver dams on benthic macroinvertebrates

   University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

   Author : Andreas Johansson; [2014]
   Keywords : ;

   Abstract : In the 1870's the beaver (Castor fiber), population in Sweden had been exterminated. Thebeaver was reintroduced to Sweden from the Norwegian population between 1922 and 1939.Today the population has recovered and it is estimated that the population of C. fiber in all ofEurope today ranges around 639,000 individuals. READ MORE

4. 8. Local and landscape effects on the diversity of plant communities in Swedish beaver ponds

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

   Author : Joel Lönnqvist; [2014]
   Keywords : beaver pond; Castor fiber; aquatic plants; hydrophytes; helophytes; macrophytes; landscape; nitrogen; plant dispersal; catchment;

   Abstract : The European beaver Castor fiber is considered an ecosystem engineer and a key species because of its dam building behavior. Little is known about the factors affecting plant diversity in beaver impounded streams. This study aimed to investigate if local and landscape variables affect plant diversity of beaver ponds. READ MORE