Search for dissertations about: "grassland"

Showing result 1 - 5 of 87 swedish dissertations containing the word grassland.

  2. 1. Grassland restoration : Connectivity, plant community change and cows

    Author : Rozália E. Kapás; Sara Cousins; Adam Kimberley; Lars A. Brudvig; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; biodiversity; colonization; connectivity; dispersal; distance to species pool; diversity; grassland restoration; grassland specialist species; grazing livestock; habitat availability; plant community composition; restoration; semi-natural grassland; species richness; naturgeografi; Physical Geography;

    Abstract : The ecological significance of semi-natural grasslands is high because these habitats provide a home for a diverse flora and fauna and support a range of associated ecosystem services. Due to large-scale land-use changes the extent of grassland habitat has declined. READ MORE

  4. 2. Remote sensing of grassland communities : integrated effects of soil nutrients and habitat age

    Author : Oskar Löfgren; Biodiversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Remote sensing; Plant ecology; semi-natural grassland; Nitrogen; Phosphorus; Semi-natural grassland; Plant ecology; Remote sensing; Nitrogen; Phosphorus; Spectral reflectance; grassland specialists; Succession;

    Abstract : Semi-natural grasslands are characterized by high fine-scale plant species richness. The richest grassland communities, with many habitat-specialist species, are found in ancient grassland sites that have a long continuity of grazing management and low levels of soil nutrients. Grazed grasslands were widespread in the historical landscape. READ MORE

  5. 3. Soil phosphorus – a multidimensional resource that plays an important role for grassland plant species richness

    Author : Jakob Sandberg; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; niche dimension; nutrient limitation; niche differentiation; competition; soil nitrogen; soil phosphorus; plant diversity; species richness; Grassland; land use; landscape scale;

    Abstract : The semi-natural grassland habitats contain an important part of the plant diversity in Europe. Changes in farming practices have lead to drastic decreases in plant species richness. The aim of the present thesis is to contribute to the knowledge about mechanisms governing the plant species richness in grasslands with emphasis on soil nutrients. READ MORE

  6. 4. Plant community assembly during succession from arable fields to semi-natural grassland

    Author : Barbara Christine Schmid; Biodiversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; diversity; arable-to-grassland succession; space-for-time approach; land-use history; plant community assembly; grazing management; connectivity measures; dispersal vector; vascular plants; grassland specialist conservation;

    Abstract : Large areas of grazed, species rich semi-natural grassland were lost in Europe during the last two centuries and as a consequence led to decreases in grassland specialist species. Therefore, today the “restoration” of grassland on previously arable fields is recommended for the protection of grassland specialists. READ MORE

  7. 5. Landscape change and grassland dynamics : retrospective studies based on aerial photographs and old cadastral maps during 200 years in south Sweden

    Author : Helle Skånes; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Kulturlandskapet-- Halland -- Småland;

    Abstract : .... READ MORE