Sökning: "Predator"

Visar resultat 6 - 10 av 227 uppsatser innehållade ordet Predator.

  1. 6. Behavioral response of reindeer (Rangifer tarandus) to acoustic stimuli

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Johanna Börs; [2023]
    Nyckelord :reindeer; Rangifer tarandus; acoustic stimuli; behavioral response; flight response; induced fear;

    Sammanfattning : Scare systems based on acoustic stimuli have been tested on several ungulates in recent years. The aim has been to investigate whether the method can be useful in situations where the animals must quickly be displaced from a specific site, for example, to prevent wildlife accidents. LÄS MER

  3. 7. Brunifiering av akvatiska ekosystem: En experimentell studie som undersöker tröskelvärde för predator- och bytesförhållande vid en gradient från klart till brunt vatten

    Kandidat-uppsats, Lunds universitet/Centrum för miljö- och klimatvetenskap (CEC)

    Författare :Erik Nilsson; [2023]
    Nyckelord :Brunifiering; tröskelvärde; födointag; predator- och bytesförhållande; Earth and Environmental Sciences;

    Sammanfattning : Browning of water has increased over the last couple of decades on the northern hemisphere. Research show that possible drivers for this change are land use change, climate change, increased precipitation and increased temperatures. LÄS MER

  4. 8. The effects of fishing on stability of a food web under climate warming

    Master-uppsats, SLU/Dept. Of Aquatic Resources

    Författare :Gabriel Nordström; [2023]
    Nyckelord :fishing; climate change; temperature; predator; consumer; resource; stage-specific; food webs; ontogenetic assymetry; biomass overcompensation; emergent Allee effects; limit cycles;

    Sammanfattning : Predicting the effects of fishing in a warmer environment caused by climate change requires knowledge of what trophic level is fished on, the physiological effects of temperature on fish, and how these two affect ecological interactions. Both temperature and fishing are known to affect the stability of food webs in several ways. LÄS MER

  5. 9. Change in uptake and transfer of zinc in the food chain when predatory fish disappear from the system

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Sara Westerström; [2023]
    Nyckelord :Aquatic food web; Food chain structure; Trophic transfer; Decline of top predators; Stage-structured biomass model; Pollutants; Heavy metals; Zinc; Akvatisk födoväv; Födovävsstruktur; Trofisk överföring; Minskning av toppredatorer; Stegstrukturerad biomassamodell; Föroreningar; Tungmetaller; Zink;

    Sammanfattning : There is a widespread distribution of possibly toxic heavy metals, such as zinc, in aquatic ecosystems. Simultaneously aquatic food webs are changing due to declining predatory fish stocks. LÄS MER

  7. 10. Wolverine Scavenging Behaviour : At their southern range in Sweden

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Camille gautier; [2023]
    Nyckelord :Gulo gulo; scavenger; wolverine; adaptative management; Sweden.;

    Sammanfattning : Over the past decades, wolverines in Sweden have made a recovery from near extinction to recolonization large part of their historic range. Effective conservation of large carnivores, which inhabit extensive territories, necessitates adaptative management that considers the diverse ecological and societal factors spanning their entire range. LÄS MER