Search for dissertations about: "Plant-soil feedbacks"

Found 3 swedish dissertations containing the words Plant-soil feedbacks.

  1. 1. Plant-soil-herbivore interactions in a high Arctic wetland - Feedbacks to the carbon cycle

    University dissertation from Department of Physical Geography and Ecosystem Science, Lund University

    Author : Julie Maria Falk; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Arctic wetlands; carbon balance; herbivory; increased grazing pressure; methane fluxes; muskox exclusion; substrate avalibility; vegetation composition and density;

    Abstract : Arctic ecosystems hold massive amounts of the global carbon in their soils and are of great importance for the global terrestrial exchange of greenhouse gases to the atmosphere. The arctic region has in general been acting as a C sink for the past 10000 years, however with climate change the C balance in some areas is shifting towards becoming a C source. READ MORE

  2. 2. Long-lasting ecological legacies of reindeer on tundra vegetation

    University dissertation from Umeå : Umeå University

    Author : Dagmar D. Egelkraut; Johan Olofsson; Bruce Forbes; Hans Tømmervik; René van der Wal; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Alternative stable state; Herbivory; Historical contingency; Nutrient cycling; Plant-herbivore interactions; Plant-soil feedbacks; Rangifer tarandus; Reindeer herding; Traditional land use; Tundra vegetation;

    Abstract : Reindeer can have strong effects on the plant species composition and functioning of tundra ecosystems, and often promote a transition towards a graminoid-dominated vegetation type. As a result, they influence many ecological processes, such as nutrient dynamics, soil biotic composition and functioning, and carbon storage. READ MORE

  3. 3. Functional role of fire-derived charcoal in boreal forest ecosystem processes

    University dissertation from ; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences

    Author : Nathalie Pluchon; Sveriges lantbruksuniversitet.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Charcoal is a natural product of wildfires which operate as a major natural disturbance in boreal forested ecosystems. This carbon (C)-rich material is present in most forest soils but its effects on ecosystem processes remain poorly understood. READ MORE