Sökning: "natural disturbances"

Visar resultat 1 - 5 av 228 avhandlingar innehållade orden natural disturbances.

  1. 1. Interactions between climate, natural disturbances, and regeneration in boreal and hemi-boreal forests

    Författare :Igor Drobyshev; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; conservation strategies; Plant ecology; Växtekologi; taiga; seasonal climate; shoot increment; larch; reconstruction; human; canopy gap; fire history; boreal; natural disturbances; dendrochronology;

    Sammanfattning : Natural disturbance is an important driving force of community dynamics in many forest types around the globe. Understanding spatial and temporal properties of disturbance events in the present and in the past is important in formulating the nature conservation strategies as well as for the modeling of climate and human impacts on forest vegetation. LÄS MER

  2. 2. Disturbances in food webs : Importance of species interactions from an ecological and evolutionary perspective

    Författare :Anna Åkesson; Anna Eklöf; György Barabas; Vasilis Dakos; Linköpings universitet; []

    Sammanfattning : Biodiversity loss is occurring globally at an unprecedented pace. This is not only followed by ethical concerns; it also affects all levels of an ecosystem, with wide-spread implications for ecosystem functioning, services and human well-being. LÄS MER

  3. 3. Ecological restoration of natural disturbances in boreal forests

    Författare :Ruaridh Hägglund; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []

    Sammanfattning : Worldwide declines in biodiversity have accentuated the need for conservation actions. Unfortunately, the decline is unlikely to be reversed by traditional conservation alone. Instead the practice of ecological restoration has come to play an ever increasing role. LÄS MER

  4. 4. Stability and complexity of ecosystems - Global interaction constraints, landscape and extinctions

    Författare :Susanne Pettersson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Complexity; Collapse; Stability; Ecosystems; Extinctions; Population dynamics; spatial heterogeneity; Dynamical systems; dispersal;

    Sammanfattning : Human society's expansion and demand for both biotic and abiotic natural resources exert a large pressure on ecosystems around the globe. Ecosystems are complex networks of species interacting with each other and their physical surroundings. LÄS MER

  5. 5. Managing Mangrove Ecosystem Services for Local Livelihoods and Adaptations in Tanzania

    Författare :Baraka Nyangoko; Håkan Berg; Martin Gullström; Mwita Mangora; Mwanahija Shalli; Johan Hollander; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mangroves; ecosystem services; mangrove management; livelihoods; ecosystem-based adaptation; Tanzania; naturgeografi; Physical Geography;

    Sammanfattning : Recognizing the importance of ecosystem services (ES) for peoples' livelihoods and well-being is important for decision-making processes on conservation. Mangrove ecosystems in Tanzania are protected by law, but they continue to be exposed to degradation and loss, and there is still limited information about the awareness, preferences, status and trends of the ES they provide. LÄS MER