Sökning: "loss of habitat"

Visar resultat 6 - 10 av 197 uppsatser innehållade orden loss of habitat.

  1. 6. Är det storleken som räknas? : Hur påverkar värdväxtens bladform och bladstorlek äggkläckningsfrekvensen hos ägg av violett guldvinge (Lycaena helle)?

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Sigrid Sjösteen; [2023]
    Nyckelord :Lycaena helle; Lycaenidae; habitat quality; Bistorta vivipara; ;

    Sammanfattning : The violet copper (Lycaena helle) is one of the most endangered butterflies in Europe, with a population pattern of steady decline despite consevation efforts. The main threat to the species is believed to be habitat fragmentation and loss due to changes in land use practices. LÄS MER

  3. 7. Assessment of the invasive Himalayan balsam (Impatiens glandulifera) distribution in Sweden : The effects of latitudinal location and land cover on the distribution

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

    Författare :Daniel Penttinen; [2023]
    Nyckelord :Himalayan balsam; Impatiens glandulifera; distribution; Jättebalsamin; Impatiens glandulifera; utbredning;

    Sammanfattning : Invasive alien species are recognized as a major problem worldwide. They affect native flora and fauna negatively, resulting in loss of biodiversity and increased economic costs of the species’ themselves and management efforts. LÄS MER

  4. 8. Identification of restoration hotspots in landscape-scale green infrastructure planning based on model-predicted connectivity forest

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Xiaoming Wang; [2023]
    Nyckelord :boreal forest; conservation; restoration; connectivity; green infrastructure; GIS; Sweden; Earth and Environmental Sciences;

    Sammanfattning : Boreal forest landscapes have undergone severe anthropogenic fragmentation and their enormous values concerning, e.g., ecosystem service, biodiversity and culture are hazarded. LÄS MER

  5. 9. The ecological impact of artificial light at night in landscape architecture : strategies and guidelines for street lights for the benefit of biodiversity and local wildlife

    Kandidat-uppsats, SLU/Dept. of Urban and Rural Development

    Författare :Zozan Altun; [2023]
    Nyckelord :light pollution; artificial light at night; ecology; biodiversity; local wildlife; landscape architecture; guidelines; strategies;

    Sammanfattning : Artificial light at night (ALAN) is an increasingly common form of light pollution that contributes to biodiversity loss, loss of dark habitats, disrupting populations both on an individual- and population level by invading biodiversity hot spots. Recent studies show that artificial light is increasing at a rate of approximately 6% annually over Earth’s surface, and 88% of Europe and 47% of the United States experience light pollution on a nightly basis. LÄS MER

  7. 10. Investigating the influence of the tidal regime on harbour porpoise Phocoena phocoena distribution in Mount’s Bay, Cornwall

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Duncan Jones; [2023]
    Nyckelord :Geography; Geographical Information Systems; GIS; Habitat Modelling; Harbour Porpoise; MaxEnt; Tidal Processes; Conservation; Earth and Environmental Sciences;

    Sammanfattning : Investigating the influence of the tidal regime on harbour porpoise Phocoena phocoena distribution in Mount’s Bay, Cornwall Abstract Unintentional by-catch in fishing gear is a significant cause of mortality of harbour porpoises in UK waters. Understanding the spatial distribution of harbour porpoises at fine scales and how this changes over time is essential when trying to understand where these lethal interactions might occur. LÄS MER