Sökning: "plant community assembly"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden plant community assembly.

1. 1. Plant community assembly in grazed grasslands

   Författare :Bryndís Marteinsdóttir; Eriksson Ove; Cousins Sara A. O.; Johan Ehrlén; Meelis Pärtel; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Assembly rules; dispersal limitation; environmental filtering; establishment limitation; ex-arable fields; functional traits; landscape history; semi-natural grasslands; seed bank; seed augmentation; seed rain; trait based filtering; Plant Ecology; växtekologi;

   Sammanfattning : Species assembly into local communities from the surrounding region can be caused either by species failure to reach the site (i.e. seed limitation) or to establish (i.e. LÄS MER

3. 2. The role of regeneration in plant niche differentiation and habitat specialization

   Författare :Dirk-Jan ten Brink; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; seed mass; seed size; drought; shade; seed germination; seed dormancy; seedling establishment; plant community ecology; assembly rules; habitat specialization; plant recruitment; Regeneration; niche differentiation; phylogenetic independent contrasts; plant traits; soil fertility; comparative ecology;

   Sammanfattning : To predict the effects of environmental change and nature management on the distribution of plant species, it is crucial to understand the mechanisms of plant niche differentiation and habitat specialization. The importance to habitat specialization of particular plant traits and requirement of the regenerative phase of the plants life has received scanty interest. LÄS MER

4. 3. Grassland restoration : Connectivity, plant community change and cows

   Författare :Rozália E. Kapás; Sara Cousins; Adam Kimberley; Lars A. Brudvig; Stockholms universitet; []
   Nyckelord :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;

   Sammanfattning : 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. LÄS MER

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

   Författare :Barbara Christine Schmid; Biodiversitet; []
   Nyckelord :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;

   Sammanfattning : 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. LÄS MER

7. 5. Community and food web assembly on virgin habitat islands - The nunatak saga

   Författare :Maria Ingimarsdottir; Biologiska institutionen; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; allochthonous material; arthropods; community assembly; corridor; dispersal; Iceland; metacommunity; nunataks; primary succession; stable isotopes.;

   Sammanfattning : The classical view of primary community assembly is that colonisation by plants is essential before invertebrates can establish. It has been recognised, however, that invertebrates can establish before plants, and that they may be important in the first steps of community assembly. LÄS MER