Uppsatser om freshwater pearl mussel

9 uppsatser

Inventering av flodpärlmussla i Fylleån norr om Gyltigesjön

Kandidatuppsats

Freshwater environments are threatened worldwide, of which many of the species associatedwith freshwater. In 2014, 243 freshwater mussels were on the international Red List. One ofthem is the freshwater pearl mussel, Margaritifera margaritifera, which because of itscomplex life …

Flodpärlmusslans status i Laxtjärnbäcken

Effekter på flodpärlmusslan av sedimentbelastning och förekomst av bäckröding

Kandidatuppsats · Umeå universitet

… and sediment load may be a threat against the reproduction anddistribution of freshwater pearl mussel (Margaritifera margaritifera) in a creek located innorthern Sweden. Freshwater pearl mussel is an endangered species and is dependent ofbrown trout (Salmo trutta) to reproduce …

Bottensubstratets inverkan på föryngring av Flodpärlmussla

Kandidatuppsats · SLU

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. We investigated how the substrate composition of the bottom floor affects the …

Rondellen och dess växtmaterial

Examensarbete, grundnivå · Högskolan i Gävle

Common species of freshwater mussels may, like the freshwater pearl mussel (Margaritifera margaritifera) have a drastic decline in number and there is several reasons, like sedimentation, a decline of host fishes, introduction of alien species, nutrition leakages from …

Om behovet av ett avrinningsområdesanpassat skogsbruk

Kandidatuppsats · SLU

… landscapes and catchments. In some of the watercourses lives spieces like the freshwater pearl mussel (Margaritifera margaritifera) and brown trout (Salmo trutta) which both are sensitive for inteference from the forestry. The new EU water framework directive has a goal that all …

Effekt av parasitinfektion på öringens furagering

Kandidatuppsats · Karlstads universitet

Parasiter kan påverka sina värdar på många olika sätt. Flodpärlmusslans (Margaritifera margaritifera L.) glochidielarver lever inkapslade som parasiter på gälarna hos öring (Salmo trutta L.) i flera månader innan de blir frilevande. Genom experiment i ett strömakvarium har denna …