Sökning: "pellet count"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden pellet count.

  1. 1. Scots pine for fika : the role of local moose density in determining browsing damages to pine across commercial forests in Sweden

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Rebecca Partemi; [2022]
    Nyckelord :moose; Scots pine; browsing damage; forestry; Äbin;

    Sammanfattning : By browsing on young Scots pine (Pinus sylvestris), moose (Alces alces) can cause significant damage to commercial forests. The National Forest Agency monitors browsing damage and moose faecal pellet groups annually on pre-defined plots throughout Sweden. LÄS MER

  3. 2. Movement ecology of ungulate communities : effect of species densities and habitat selection

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

    Författare :Linda Zetterkvist; [2020]
    Nyckelord :step-selection; wildlife management; diurnal activity; moose Alces alces ; red deer Cervus elaphus ; roe deer Capreolus capreolus ;

    Sammanfattning : Animal movement is a topic important in various different ecological perspectives. Ungulate species are an important source of income, hunting game and subject for protection and management all across the globe. LÄS MER

  4. 3. How does species density affect activity patterns of three sympatric ungulate species in a Scandinavian boreal forest?

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

    Författare :Linda Zetterkvist; [2020]
    Nyckelord :telemetry; pellet count; camera trap; linear mixed model; ungulate management; red deer; roe deer; moose;

    Sammanfattning : Ungulate management becomes more complex when new species are being introduced and favorable habitats are created by commercial forestry and other forms of land use, resulting in increasing populations. Climate change is also affecting their distributions by altering their ability to spread from their historical range. LÄS MER

  5. 4. Comparison of existing ZOI estimation methods with different model specifications and data.

    Master-uppsats, Högskolan Dalarna/Mikrodataanalys

    Författare :Shraddha Mukhopadhyay; [2020]
    Nyckelord :Zone of Influence; reindeer; pellet group count; logistic regression; segmented model; Hierarchical Likelihood; Adaptive Lasso; threshold; breakpoint;

    Sammanfattning : With the increasing demand and interest in wind power worldwide, it is interesting to study the effects of running windfarms on the activity of reindeers and estimate the associated Zone of Influence (ZOI) relative to these disturbances. Through simulation, Hierarchical Likelihood (HL) and adaptive Lasso methods are used to estimate the ZOI of windfarms and catching the correct threshold at which the negative effect of the disturbances on the reindeer behaviour disappears. LÄS MER

  7. 5. Comparison of three different indirect methods to evaluate ungulate population densities

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

    Författare :Sabine Pfeffer; [2016]
    Nyckelord :wildlife ecology; density estimates; camera trapping - random encounter model; dung pellet group counts;

    Sammanfattning : Reliable species population estimates are important for population conservation and management. Information about population sizes is needed to introduce certain preservation and regulation approaches. Several different methods, both performed in the field and analytical, can be used to estimate species densities. LÄS MER