Sökning: "implications from predation"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden implications from predation.

  1. 1. Hur påverkar storskarv (Phalacrocorax carbo) och skäggdopping (Podiceps cristatus) fisksamhället i grunda, näringsrika sjöar?

    Kandidat-uppsats, Linköpings universitet/Biologi

    Författare :Victor Spjern; [2020]
    Nyckelord :Great Cormorant; Great Crested Grebe; diet composition; foraging competition; diving predatory birds; implications from predation; prey size selection; prey species selection;

    Sammanfattning : Piscivorous birds are an integrated part of lake and coastline ecosystems. Despite decades of research it is yet unclear what influence fish eating birds have on the fish community. LÄS MER

  3. 2. Fire effects in a landscape of fear : food availability and perceived predation risk as potential determinants of patch utilization by herbivore prey

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :David Kymmell; [2019]
    Nyckelord :landscape of fear; forest fire effects; herbivore prey; camera trapping;

    Sammanfattning : Context: A major effect of climatic change is the global increase in forest fires, which potentially creates an increase in food availability for herbivorous species. Also vegetation density and the numbers of tree logs increase in burned sites, and this is thought to influence the perceived risk of herbivore prey species, which affects their anti‐predator behaviour and thereby the patch utilization. LÄS MER

  4. 3. Harbour porpoise (Phocoena phocoena) predation on cod (Gadus morhua) in the Kattegat : a review of current knowledge and implications for stock assessments

    Kandidat-uppsats, SLU/Dept. Of Aquatic Resources

    Författare :Adam Wallin; [2017]
    Nyckelord :Atlantic cod; diet; Gadus morhua; harbour porpoise; Kattegat; Phocoena phocoena; prey;

    Sammanfattning : Kattegat is an area between Denmark and Sweden that connects the Atlantic Ocean to the Baltic Sea. It has long been an important source for fishery of cod (Gadus morhua). LÄS MER

  5. 4. Prey choice of great cormorants (Phalacrocorax carbo) in a marine protected area : potential impact on collapsed fish stocks and implications for future monitoring

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Elin Ljunggren; [2017]
    Nyckelord :cormorant; Phalacrocorax carbo; diet; predation; 8-fjords area; fisheries; conflict;

    Sammanfattning : Great cormorant (Phalacrocorax carbo) populations have experienced a rapid growth in Europe since the 1980s, resulting in conflicts with fisheries over local fish resources. The 8-fjords area is a marine protected area on the Swedish west coast, where long term overfishing has led to a collapse of several local demersal fish stocks. LÄS MER

  7. 5. Spatiotemporal competition patterns of Swedish roe deer and wild boar during the fawning season

    Magister-uppsats, SLU/Dept. of Ecology

    Författare :Staffan Melberg; [2012]
    Nyckelord :Sus scrofa; Capreolus capreolus; interspecific competition; predation; spatiotemporal;

    Sammanfattning : Abstract This study was performed on Bogesund research area, Sweden, in order to determine whether wild boar (Sus scrofa) predates on fawns of roe deer (Capreolus capreolus) and if the spatial and temporal patterns of roe deer are related to wild boar activity. A behav-ioural response is beneficial for many organisms when they are exposed to interspecific competition. LÄS MER