Sökning: "Ecological Botany"

Visar resultat 1 - 5 av 80 avhandlingar innehållade orden Ecological Botany.

  1. 1. Recruitment and understorey herb dynamics in deciduous and mixed coniferous forest

    Detta är en avhandling från Stockholm : Department of Botany, Stockholm University

    Författare :Heléne Fröborg; Stockholms universitet.; [2001]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecological Botany; ekologisk botanik;

    Sammanfattning : The distribution and abundance of plant species is determined by the ability to disperse, recruit and persist in a suitable habitat. Plant-animal interactions influence recruitment by reducing seeds and seedlings through predation and herbivory. LÄS MER

  2. 2. Wood-inhabiting fungi of alder forests in north-central Scandinavia 1, Aphyllophorales (Basidiomycetes). Taxonomy, ecology and distribution

    Detta är en avhandling från Umeå : Umeå Universitet

    Författare :Åke Strid; Umeå universitet.; [1975]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Basidiesvampar; ekologisk botanik; Ecological Botany;

    Sammanfattning : Wood-inhabiting fungi were collected on different trees in 99 loca-' lities of alder woods, dominated by Alnus incana or occasionally A. glutinosa, in N-C Sweden and C Norway. Most of the localities are situated near the east coast of Sweden where the prevailing land elevation creates conditions suitable for colonization by alder. LÄS MER

  3. 3. Island biogeography of young land uplift islands - viewed through the lens of bryophytes in a northern Swedish archipelago

    Detta är en avhandling från Umeå : Umeå University

    Författare :Andreas Karlsson Tiselius; Umeå universitet.; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; functional data analysis; metacommunity; isolation; mosses; liverworts; sporophyte production; dispersal-establishment trade-off; ekologisk botanik; Ecological Botany; Conservation Biology; naturvårdsbiologi; Statistics; statistik;

    Sammanfattning : Increasing habitat fragmentation and rapid global warming is changing the conditions for species populations and ecological communities around the world. This presents challenges for the maintenance of biodiversity and a dominant paradigm for conservation in fragmented habitats is given by island biogeography and metapopulation (or metacommunity) ecology. LÄS MER

  4. 4. Phytoplankton in Swedish oligotrophic lakes, affected by acidification, metals and liming

    Detta är en avhandling från Stockholm : Stockholm University

    Författare :Einar Hörnström; Stockholms universitet.; [1999]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecological Botany; ekologisk botanik;

    Sammanfattning : Anthropogenic airborne acidification has seriously affected thousands of lakes in Sweden, an alarming fact which was first noticed in the early 1970s, when pH had decreased to values below 5, especially in areas poor in limestone such as the Swedish west coast. This development was critical to phytoplankton, the diversity of which being markedly reduced, and where the groups Cyanophyceae, Bacillariophyceae and Conjugatophyceae were totally eliminated. LÄS MER

  5. 5. Evolution of seed attributes, dispersal and population dynamics of plants,with special emphasis on fragmented habitats

    Detta är en avhandling från Stockholm : Stockholm University

    Författare :Katariina Kiviniemi; Stockholms universitet.; [1999]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecological Botany; ekologisk botanik;

    Sammanfattning : Theory predicts that life history traits that reduce the impact of environmental variation will exhibit a pattern of negative covariation (trade-offs). In plants, such traits are seed size, spatial seed dispersal and seed dormancy which interact to reduce risk in a variable environment. LÄS MER