Sökning: "fish demography"

Hittade 3 uppsatser innehållade orden fish demography.

  1. 1. Ecological impacts of dam removal in Swedish inland waters : Effects on water chemistry and fish demography

    Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Författare :Johanna Ekman; [2023]
    Nyckelord :biology; ecology; dam removal; Sweden; impact; inland waters; ecosystem; water chemistry; fish demography; Perca fluviatilis; European perch; biologi; ekologi; dammutrivning; Sverige; påverkan; inlandsvatten; ekosystem; vattenkemi; fiskdemografi; Perca fluviatilis; abborre;

    Sammanfattning : Dams play an important role in our society, but their negative impacts on aquatic ecosystems have led to a need for conservation efforts to mitigate the negative effects. In some instances, dam removal has been suggested to be the most economically and ecologically beneficial restoration method to improve longitudinal connectivity. LÄS MER

  3. 2. Synchronizing migration with birth: an exploration of migratory tactics in female moose

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

    Författare :Linnéa Näsén; [2015]
    Nyckelord :migration; calving; moose; time minimization; energy maximization;

    Sammanfattning : Migration and giving birth are crucial decisions for animals during their life cycle, which may have lasting consequences on their population demography and fitness. Migration can entail a variety of possible effects for an individual, such as access to high quality food and reduced risk for predation. LÄS MER

  4. 3. Hunter demography, trends and correlates of hunting participation in Sweden

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

    Författare :Erik Lindberg; [2010]
    Nyckelord :demography; trends; participation; hunting; Sweden; human dimensions; hunter decline; social factors; foreign; harvest; moose; game;

    Sammanfattning : The concerning issue of declining number of hunters in North America is also apparent in Europe and Sweden. When the bulk of research found on human dimensions and hunting participation has almost exclusively been done in the United States, this report seeks to add to the needed knowledge on a national level focusing on the causes of hunter declines related to social factors within Sweden. LÄS MER