Sökning: "effect of ice-cover"
Hittade 4 uppsatser innehållade orden effect of ice-cover.
1. Ice cover and spatial distribution of trout (Salmo trutta) in a small stream
Kandidat-uppsats, Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)Sammanfattning : Winter has been generally considered as a bottleneck period for salmonid populations, but recent studies show it might be more context related. The purpose of this study was to examine how surface ice changes spatial distribution of juvenile one-year-old brown trout in a small boreal stream. LÄS MER
2. A modeling study of the impact of climate change on temperature and oxygen profiles in three Swedish lakes
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : Climate change is one the greatest environmental challenges of our time, both due to direct eectssuch as global warming but also due to the potential of the climate acting as a driver for otherenvironmental problems. This thesis aims to evaluate the impact of climate change on thermal properties and the content and distribution of dissolved oxygen in boreal lakes. LÄS MER
3. Spring ice melt effect on benthic oxygen production
Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : In biology, the winter season is less studied than other seasons partly due to technical and logistical difficulties. The Arctic region is undergoing rapid changes with shorter and warmer winters, shorter snow duration and considerable changes in snow and ice cover as a result. LÄS MER
4. Effekter av yttäckande is kontra ljusinsläpp på öringens (Salmo trutta) antipredationsbeteende under vinter
Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Sammanfattning : Previous studies have shown that ice cover has many positive effects on brown trout (Salmo trutta), including protection from endothermic predators. I tested whether it is the cover provided by the ice itself or the reduction in light that causes behavioral changes in juvenile brown trout. LÄS MER