Essays about: "Threatened species"

Showing result 1 - 5 of 196 essays containing the words Threatened species.

  1. 1. The forgotten sand bee. A follow up on the status of the golden sand bee Andrena marginata in municipality of Mark, a decade later

    University essay from Göteborgs universitet / Instiutionen för biologi och miljövetenskap

    Author : Monika Böttcher; [2024-03-19]
    Keywords : Golden sand bee; Andrena marginata; Devil´s bit scabious; Succisa pratensis; Oligolectic bees; Inventory; Meadow land; Conservation;

    Abstract : Over a decade ago, a conservation project aimed at preserving the endangered golden sand bee (Andrena marginata) populations in the Storån valley of the municipality of Marks was initiated. The species, red-listed in Sweden as well as in many other European country, specializes in pollen from Devil's bit. READ MORE

  3. 2. Arbete med biologisk mångfald på Kungliga Djurgården : med fokus på rödlistade och invasiva arter

    University essay from SLU/Dept. of Ecology

    Author : Vanda Barkstedt; [2023]
    Keywords : biologisk mångfald; rödlistade arter; invasiva arter; skötselåtgärder; bekämpningsåtgärder; Kungliga Djurgården; Kungliga Djurgårdens förvaltning;

    Abstract : Fler och fler arter hotas av förändrad markanvändning, klimatförändringar, spridning av invasiva arter m.m. För att motverka den negativa utvecklingen har urbana grönområden blivit allt viktigare. READ MORE

  4. 3. Evaluation of River Restoration Measures: Interstitial Habitat Variables and Salmon Hatching Rates as Indicators of Success

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning; Uppsala universitet/Limnologi

    Author : Jonas Emanuelsson; [2023]
    Keywords : ;

    Abstract : River ecosystems are some of the most complex ecosystems on Earth, characterized by a highly heterogenous environment which is able to sustain a disproportionally high level of biodiversity in relation to the area of which they occupy. However, anthropogenic activities are encroaching on the highly diverse riverine landscape, threatening freshwater biodiversity. READ MORE

  5. 4. Assessing the accuracy of a spatial model of habitat suitability for Calypso bulbosa

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Michael Doorly; [2023]
    Keywords : Calypso bulbosa; norna; orchid; conservation; Sweden; alpine region; habitat suitability; distribution model; ecology; biodiversity;

    Abstract : Calypso bulbosa is a rare and visually striking orchid that grows in older mesic to moist forests in the northern half of Sweden. C. bulbosa is red listed as a threatened species (Vulnerable, VU) with a reduction in numbers linked to modern forestry practices and exacerbated by the warming climate. READ MORE

  6. 5. Relations between tree and habitat characteristics and the epiphytic lichen flora on oak : a case study from Lövön, Bohuslän

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Julia Siegel; [2023]
    Keywords : Epiphytic lichens; Tree characteristics; Habitat characteristics; Oak; Biodiversity; Natural values; Light availability;

    Abstract : Oak-rich forests and wooded pastures harbor diverse and distinct epiphytic lichen flora with many rare and threatened species. As these habitats have been subject to a substantial decline and degradation over the past centuries, oak woodlands have progressively come into focus for preservation. READ MORE