Search for dissertations about: "establishment limitation"
Showing result 1 - 5 of 16 swedish dissertations containing the words establishment limitation.
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1. Plant community assembly in grazed grasslands
Abstract : 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. READ MORE
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2. Metapopulation and metacommunity processes, dispersal strategies and life-history trade-offs in epiphytes
Abstract : The aim of this thesis was to increase knowledge about metapopulation and metacommunity processes in patchy, dynamic landscapes, using epiphytic bryophytes as a model system. Host trees and deciduous forest stands in the coniferous landscape are patchy, temporal and undergo changes in habitat quality during succession. READ MORE
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3. Plant responses after drainage and restoration in rich fens
Abstract : Rich fens are an important, but threatened, habitat type in the boreal landscape. In this thesis I have examined responses of rich fen vascular plants and bryophytes after drainage and restoration.The effects of drainage on the rich fen flora were observed in a long time study and the responses were rapid and drastic. READ MORE
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4. Reproductive patterns of birches (Betula spp.) in northern Sweden
Abstract : The aim of this thesis was to study patterns of reproduction of Betula pendula and B. pubescens coll. along an altitudinal, coastal-inland, gradient in northern Sweden. The altitudinal variation was related to the distribution of the birch taxa along the gradient. READ MORE
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5. Nitrogen, parasites and plants : key interactions in boreal forest ecosystems
Abstract : In the work described in this thesis I studied how increases in nitrogen (N) inputs may affect plant community structure in boreal forest understorey vegetation. These phenomena were investigated in N fertilization experiments and along a national N deposition gradient. READ MORE