Sökning: "metapopulation dynamics"

Hittade 5 uppsatser innehållade orden metapopulation dynamics.

  1. 1. A computational model of metapopulation dynamics and organism-mediated nutrient flow

    Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Författare :Amanda Hansson; [2023-08-07]
    Nyckelord :computational model; population dynamics; metapopulation dynamics; nutrient flow; simulation; spatially explicit; individual-based;

    Sammanfattning : The aim of this project was to assess, using in-silico experiments, how different life history char-acteristics, such as age at maturity and dispersal ability of individuals, influence the dynamics of a metapopulation. To achieve this, a novel model of a spatially explicit metapopulation, with organ-ism-mediated nutrient flow between fragmented habitat patches, was implemented by means of computer simulations. LÄS MER

  3. 2. Spatiotemporal Fidelity of a Metapopulational Model Evaluated on the COVID-19 Pandemic in Sweden

    Kandidat-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Filip Skogh; [2021]
    Nyckelord :Epidemiology; COVID-19; Sweden; Metapopulation; SEIR; Model;

    Sammanfattning : A modified SEIR compartmental model is constructed for COVID-19 in a metapopulational setting with fine-scaled population data. The model is stochastically simulated with GLEAMviz that provides realistic short and long distance mobility based on real-world data. LÄS MER

  4. 3. Predatoriska fåglars effekt på populationsdynamiken hos amfibier

    Kandidat-uppsats, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Författare :Lovisa Melander; [2021]
    Nyckelord :Amphibian population dynamics; amphibian population ecology; birds amphibians; populationsdynamik amfibier; populationsekologi amfibier; predation amfibier; fåglar amfibier;

    Sammanfattning : The global amphibian population is rapidly declining. Although many threats that affect amphibians are known, there are many contributing factors which are not fully understood. For adult amphibians, the largest part of the mortality comes from predation. LÄS MER

  5. 4. Pedigree reconstruction reveals large scale movement patterns and population dynamics of wolverines (Gulo gulo) across Fennoscandia

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

    Författare :Stephanie Higgins; [2019]
    Nyckelord :wolverine; pedigree; dispersal; genomics; connectivity;

    Sammanfattning : Dispersal is a biological imperative for many species, facilitating gene flow and influencing population dynamics. Modern landscapes are increasingly fragmented, leaving species that rely on dispersal trapped in ever shrinking areas. LÄS MER

  7. 5. Effect of restoration and surrounding grassland proportion on the dung beetle metapopulation abundance in the fragmented semi-natural grasslands : dung beetles in restored semi-natural grasslands

    Master-uppsats, SLU/Dept. of Ecology

    Författare :Vivek Babu; [2018]
    Nyckelord :dung beetle; grassland proportion; restoration; Aphodius; Geotrupes; abundance; semi-natural grassland; Scarabaeidae; metapopulation; habitat fragmentation; landscape ecology;

    Sammanfattning : The importance of landscape composition surrounding the local habitats is increasingly recognized, especially with goal of enhancing the understanding about its role in various conservation frameworks. The dung beetles which depend on human mediated ephemeral resources (Dung from domestic animal) gives a valuable opportunity for understanding landscape moderated effects of both the landscape structure as well as sensitive grazing management on the local populations of semi-natural grasslands in Sweden. LÄS MER