Sökning: "species richness"

Visar resultat 16 - 20 av 262 uppsatser innehållade orden species richness.

  1. 16. Claws and Effect : how Small Carnivore Richness Responds to Habitat Diversity and Ecological Productivity

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

    Författare :Emilia Arkdalen; [2023]
    Nyckelord :small carnivore; camera trap; occupancy model; species richness; productivity; habitat richness; habitat evenness;

    Sammanfattning : Species distribution and composition research has gained significance in light of global warming and its impact on biodiversity. Understanding the factors shaping species richness is crucial for wildlife ecology and conservation. LÄS MER

  3. 17. Beetle Diversity – Land Sparing or Land Sharing? : the effects of timber extraction and restoration method on saproxylic beetle assemblages in mature managed pine forests

    Kandidat-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Ella Amnéus; Sebastian Hjelström; [2023]
    Nyckelord :Saproxylic Beetles; Ecological Restoration; Deadwood; Biodiversity; Boreal Forest; Fire Ecology; Land-sparing; Land-sharing; Conservation Management;

    Sammanfattning : The impoverishment of saproxylic beetle communities is a growing concern for management of boreal forest biodiversity. Past research has found active restoration methods, such as creating deadwood and conducting prescribed burnings, to have a short-term positive effect on the species richness and compositional diversity of saproxylic beetle assemblages. LÄS MER

  4. 18. Pollinator communities on a landscape complexity gradient in southern Sweden

    Magister-uppsats, SLU/Dept. of Ecology

    Författare :Hanna Olsson; [2023]
    Nyckelord :pollinator; bumblebee; rough pasture; semi-natural pasture; unimproved grazing; landscape complexity;

    Sammanfattning : Investigating how pollinator populations are affected by land use changes is crucial for predicting their persistence in the landscape and thereby the persistence of the significant service they provide to crop production. Pollinator populations are subjected to multiple threats, particularly overall intensification of cropping systems and landscape simplification. LÄS MER

  5. 19. Plant community responses to 15 years of nitrogen and phosphorus fertilization along an elevational gradient in the subarctic tundra

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Gaya Ten Kate; [2023]
    Nyckelord :arctic tundra; climate change; fertilization; nitrogen; phosphorus; plant community composition; species richness; Simpson’s diversity; Shannon-Wiener diversity; elevational gradient;

    Sammanfattning : Climate change in the Arctic has profound effects on tundra vegetation, directly through increasing temperatures and indirectly through changes in plant community composition and nutrient cycling. Fertilization experiments are widely used to study the effects of increased nutrient availability on arctic tundra vegetation. LÄS MER

  7. 20. Competition between managed honeybees and wild bumblebees - Quantifying dietary overlap in semi-natural grasslands

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

    Författare :Emma Rosberg; [2023]
    Nyckelord :Earth and Environmental Sciences;

    Sammanfattning : The decline of bees, such as bumblebees, over the last decades raises concerns as they are key pollinators in both agricultural and natural ecosystems. One proposed cause for the decline of wild bees is competition for food resources with managed honeybees. LÄS MER