Sökning: "habitat preferences"

Visar resultat 1 - 5 av 59 uppsatser innehållade orden habitat preferences.

  1. 1. Analys av föda för vitryggig hackspett och rödlistade vedlevande skalbaggar : utvärdering av tre olika behandlingar

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

    Författare :Emma Mattsson; Lena Ostermann; [2023]
    Nyckelord :Vitryggig hackspett; vedlevande skalbaggar; paraplyart; rödlista; biologisk mångfald; död ved; restaurering;

    Sammanfattning : Den vitryggiga hackspetten har sedan 1950-talet blivit en sällsynt art i det svenska landskapet. Nedgången beror främst på det moderna skogsbruket där barrskog till stor del har ersatt blandbestånd och gammal lövskog. LÄS MER

  3. 2. A comparative study of the mosses Ptychostomum pseudotriquetrum and P. bimum : Investigating morphological characters, habitat, and distribution across northern Sweden

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

    Författare :Isabell Sjölander; [2023]
    Nyckelord :Ptychostomum pseudotriquetrum; Ptychostomum bimum; Crypsis; Leaf decurrency; northern Sweden;

    Sammanfattning : The mosses Ptychostomum pseudotriquetrum and P. bimum (syn: Bryum, Bryophyta) are difficult to distinguish from each other, as they appear morphologically identical besides their difference in sexual condition. Because of their similarities, some researchers treat both as P. pseudotriquetrum, while others treat them as two distinct species. LÄS MER

  4. 3. Effects of soil factors on pioneer bryophyte species composition

    Master-uppsats, Lunds universitet/Examensarbeten i biologi

    Författare :Dora Mijić; [2023]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : Bryophytes play a significant role in various ecological processes, including soil succession and colonization after disturbances. Although they are commonly believed to take up nutrients from soil solutions rather than the soil itself, the influence of soil on their growth and distribution is evident from previous studies. LÄS MER

  5. 4. The diversity of moths in a nature reserve in the Northern Cape, South Africa : Variation over time, depending on abiotic factors and differences between areas with different grazing types

    Kandidat-uppsats, Linnéuniversitetet/Institutionen för biologi och miljö (BOM)

    Författare :Nellie Jarl; [2023]
    Nyckelord :Moth diversity; grazing effects; land use; biodiversity;

    Sammanfattning : Land use changes globally have significant impacts on flora and fauna. In South Africa, extensive land is used for grazing by both domestic livestock and farmed native grazers. However, the effects of different grazing types on vegetation and fauna remain poorly understood. LÄS MER

  7. 5. Gäddans val av lekvikar : Vilka faktorer bestämmer tätheterna av vuxna gäddor i Bottenhavets vikar?

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

    Författare :Simon Ingvald; [2023]
    Nyckelord :Northern pike; Esox lucius; pike recruitment; spawning habitat; rod fishing inventory;

    Sammanfattning : Northern pike (Esox lucius L) populations have been declining along the east coast of Sweden, including the Gävleborg coast. This negative trend is believed to be caused by factors related to pike recruitment including loss of suitable spawning habitats. LÄS MER