Sökning: "halichoerus grypus"
Visar resultat 1 - 5 av 9 uppsatser innehållade orden halichoerus grypus.
1. Temporal trends of Polybrominated diphenyl ethers (PBDE) and Hexabromocyclododecane (HBCDD) in Swedish Otter (Lutra lutra) and Grey Seals (Halichoerus grypus)
Magister-uppsats, Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)Sammanfattning : Polybrominated diphenyl ethers (PBDE) and hexabromocyclododecane (HBCDD) are brominated flame retardants. These compounds are lipophilic, persistent and have been shown to bioaccumulate. LÄS MER
2. Gråsälen - en skyddsvärd art, ett problem eller en resurs? : En rättsvetenskaplig undersökning om artskydd, säljakt och handel med sälprodukter i EU
Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Juridiska institutionenSammanfattning : .... LÄS MER
3. Development of northern pike (Esox lucius) populations in the Baltic Sea, and potential effects of grey seal (Halichoerus grypus) predation
Master-uppsats, SLU/Dept. Of Aquatic ResourcesSammanfattning : Worldwide, marine mammal populations are increasing after considerable efforts to turn the downward trends caused by hunting, accidental mortality and pollution. The ecosystem effects from the increases of these top predators may be pronounced, but are in most cases poorly known. LÄS MER
4. Impact of Great cormorant (Phalacrocorax carbo sinensis) on post-smolt survival of hatchery reared salmon (Salmo salar) and sea trout (Salmo trutta)
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : To compensate for the losses due to altered stream habitat large amounts of hatchery-reared Atlantic salmon (Salmo salar) and sea trout (Salmo trutta) are released into the Baltic Sea each year. During the last decades there have been an overall declining trend in the post-smolt survival of both hatchery reared and wild salmon in the Baltic Sea. LÄS MER
5. Analysing the seal-fishery conflict in the Baltic Sea and exploring new ways of looking at marine mammal movement data
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : A comprehensive analysis of the available data reveals that there is currently not enough information for making informed management decisions regarding the seal-fishery conflict in the Baltic Sea. Knowledge of hidden and visual damages is limited, which means that the actual cost to the fishing industry from damages is not known. LÄS MER