Sökning: "predator-prey"

Visar resultat 16 - 20 av 33 uppsatser innehållade ordet predator-prey.

  1. 16. Play behaviour in Urial (Ovis orientalis bocharensis) lamb

    Master-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Irene Guanyabens Garrido; [2018]
    Nyckelord :play behaviour; ural lamb;

    Sammanfattning : Welfare constitutes of health, physiology, behaviour and reproduction. It becomes very important when a species suffers in any of these parameters and thus, the assessment of welfare should be carried out. Play behaviour has been identified as a positive behaviour performed when satisfactory circumstances are present. LÄS MER

  3. 17. Have wolves (Canis lupus) finally scared moose (Alces alces) in Sweden?

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Mark Jamieson; [2018]
    Nyckelord :landscapes of fear; predator-prey interactions; habitat selection; resource selection functions; ecology;

    Sammanfattning : Carnivores are coming back to Europe and the repercussions of their return on prey species is not fully understood. Research from North American studies suggests predators can indirectly affect how ungulates will select their habitat which can result in a change in vegetation growth as browsing pressure is relaxed in risky areas. LÄS MER

  4. 18. Interspecies animal "friendships"

    Master-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Nadil Silva; [2017]
    Nyckelord :species; stress; animal bonds; play; behaviour;

    Sammanfattning : Even though conspecific close relationships are well documented, scientific studies done on interspecies close relationships are scarce. There is no agreement of using the word friendships without inverted commas when describing close relationships of animals. LÄS MER

  5. 19. Dinosaur Warfare: Ankylosaur and Theropod Coevolution

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Christopher Freer; [2017]
    Nyckelord :ankylosaur; theropod; coevolution; phenotypic mismatch; red queen; tyrannosaurid; ankylosaurier; theropoder; samevolution; phenotypic mismatch; röd drottning; tyrannosaurid;

    Sammanfattning : Ankylosauria is a clade of armoured dinosaurs that, throughout the Mesozoic, demonstrates divergent evolution of defensive traits, between the robust spikes and osteoderms of nodosaurids to the ankylosaurid tail clubs and lightweight armour. One of the longer-standing hypotheses, which is supported by histological data, stipulates that armament was a direct result of a predator-prey relationship between theropods and ankylosaurians. LÄS MER

  7. 20. Smågnagare I Boreonemorala Habitat I Mellansverige : Artsammansättning Och Populationskondition

    Kandidat-uppsats, Uppsala universitet/Zooekologi

    Författare :Daniel Tooke; [2017]
    Nyckelord :Microtine; Rodent; Population; Species; Predator-prey cycle;

    Sammanfattning : Microtine rodents are a key component in the boreal ecosystem. Due to unique yearly fluctuation in population numbers, in addition to their central placement within boreal foodwebs, microtine rodent population dynamics control a wide variety of predator populations. LÄS MER