Sökning: "Gammarus pulex"
Hittade 4 uppsatser innehållade orden Gammarus pulex.
1. Does an evolutionary change in the water sowbug Asellus aquaticus L. alter its functional role?
Master-uppsats, Ekologi; Tekniska högskolanSammanfattning : The ecology behind evolutionary diversification is a well studied area of research, whereas the effects of evolution on ecosystems get little attention. In line with ecological theory, evolutionary diversification of a species could influence different ecosystem aspects such as food web composition, energy flow, nutrient cycling etc. LÄS MER
2. How does predation from fish influence the benthic invertebrates’ species composition in the Phragmites australis and Chara vegetation of Lake Takern?
Master-uppsats, EkologiSammanfattning : Predation is one of the important selective factors that regulate the species composition of benthic invertebrate communities. The study objective was to investigate the invertebrate distribution in two contrasting habitats in Lake Takern, southern Sweden, submerged Chara vegetation and emergent Phragmites australis vegetation, and to investigate the influence of predation from fish on certain invertebrates. LÄS MER
3. Ger olika temperaturförhållanden ¨trade off¨- effekter mellan tillväxt och exokutikulans tjocklek hos Gammarus pulex? En pilotstudie
Kandidat-uppsats, Sektionen för ekonomi och teknik (SET)Sammanfattning : I rinnande vatten, så som bäckar och åar, har Gammarus pulex en viktig ställning i näringsväven. Arten bidrar till att bryta ner organiskt material och göra energin i detta tillgänglig för andra organismer. G. pulex är dessutom en viktig föda för ett stort antal predatorer. LÄS MER
4. Sediment toxicity in River Kolbäcksån – toxicity tests with Chironomus riparius and Gammarus pulex
L3-uppsats, SLU/Dept. of Aquatic Sciences and AssessmentSammanfattning : During a long time the river Kolbäcksån has been influenced by mining activities in the catchment area and consequently the lakes in the area have been affected by high metal discharges. The most contaminated lake in river Kolbäcksån is L. Saxen, which is situated in the upper part of the river system. LÄS MER