Sökning: "Sphagnum"

Visar resultat 1 - 5 av 18 avhandlingar innehållade ordet Sphagnum.

  1. 1. Evolutionary Processes and Hybridization within the Peat Mosses, Sphagnum

    Detta är en avhandling från Apelsin Publishing

    Författare :Rayna Natcheva; Lunds universitet.; Lund University.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; taxonomi; morfologi; kemotaxonomi. Växters fysiologi inte kärlväxter .; Sphagnum; bryophytes; morphology; phytogeography; chemotaxonomy. Physiology of nonvascular plants; Systematisk botanik; growth rate; regeneration; evolution; Systematic botany; taxonomy; introgression; maternal inheritance; recombination; hybridizarion;

    Sammanfattning : The aim of this thesis was to reveal details of the interspecific hybridization among bryophytes as exemplified by Sphagnum capillifolium and S. quinquefarium. LÄS MER

  2. 2. Surface Energy Exchange and Hydrology of a Poor Sphagnum Mire

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Erik Kellner; Uppsala universitet.; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Earth sciences; Sphagnum; Geovetenskap; myr; energibudget; ytresistans; vitmossa; hydrologiska modeller; TDR; NATURAL SCIENCES Earth sciences; NATURVETENSKAP Geovetenskap; Hydrology; hydrologi;

    Sammanfattning : Mires surface energy and water budgets govern the conditions for climatic, hydrological, ecological and carbon balance processes. The components of the water and surface energy budgets were quantified over two growing seasons for an open boreal mire. LÄS MER

  3. 3. Responses of peatland vegetation to enhanced nitrogen

    Detta är en avhandling från Umeå : Ekologi, miljö och geovetenskap

    Författare :Magdalena Wiedermann; Umeå universitet.; [2008]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Sphagnum; nitrogen; peatlands; soluble amino acids; gradient study; field experiment; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi;

    Sammanfattning : Human alteration of the global nitrogen (N) cycle has had major impacts on naturally N-limited ecosystems worldwide. Peatlands, dominated by peat mosses, Sphagnum species, represent one such sensitive ecosystem. LÄS MER

  4. 4. Vegetation structure and interactions on mires

    Detta är en avhandling från Crister Albinsson, Dept of Natural Sciences, Högskolan i Kalmar, Box 905, S-391 29 Kalmar, Sweden

    Författare :Crister Albinsson; [1996]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; soligenous water supply; sloping fen; ordination; niche breadth; Narthecium ossifragum; liverwort; light competition; life strategy; hepatic; environmental gradient; classification; Association analysis; autecology; southern Sweden; Sphagnum; vegetation; Plant ecology; Växtekologi;

    Sammanfattning : The distribution of sloping fens in southern Sweden was mapped, their vegetation sampled and related to the environmental variables recorded. This mire type is distributed further to the east than previously reported, namely around the highest post-glacial limit of the sea level. LÄS MER

  5. 5. Vegetation changes on Swedish mires Effects of raised temperature and increased nitrogen and sulphur influx

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Urban Gunnarsson; Uppsala universitet.; [2000]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Developmental biology; Acidification; growth; long-term studies; mires; nitrogen; species richness; Sphagnum; succession; sulphur; temperature; Utvecklingsbiologi; NATURAL SCIENCES Biology Organism biology Developmental biology; NATURVETENSKAP Biologi Organismbiologi Utvecklingsbiologi; ekologisk botanik; Ecological Botany;

    Sammanfattning : Since the start of the industrialisation, the deposition of nitrogen and sulphur and the atmospheric concentrations of greenhouse gases have increased. The main objectives of this study were to find how these changes in climate and deposition can change the vegetation of mire ecosystems and the growth of Sphagnumspecies. LÄS MER