Sökning: "ecological boundary"

Visar resultat 1 - 5 av 20 avhandlingar innehållade orden ecological boundary.

1. 1. Living on the edge : effectiveness of buffer strips in protecting biodiversity on boreal riparian forests

   Författare :Kristoffer Hylander; Christer Nilsson; Bengt Gunnar Jonsson; Ellen Macdonald; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; boreal forest; bryophyte; buffer strip; ecological boundary; edge effect; headwater stream; land snail; liverwort; moss; phytometer; riparian forest; substrate; terrestrial gastropod; Ekologi; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi; ekologisk botanik; Ecological Botany;

   Sammanfattning : The objective of this thesis is to evaluate the ecological consequences of buffer strip retention on riparian and terrestrial biodiversity. Earlier studies on forest buffer strips have evaluated their effectiveness in relation to water quality and aquatic biota. However, forests along streams are species rich habitats for many organism groups. LÄS MER

3. 2. Air mass boundary identification : improvement of precipitation phase determination in surface based modeling

   Författare :James Feiccabrino; Per-Erik Jansson; Luleå tekniska universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Applied Geology; Tillämpad geologi;

   Sammanfattning : Snowpack properties derived from hydrological models play an important role for many ecological, water resource, and climate applications; such as winter survival of plants, reindeer, small mammals and birds, avalanche hazards, glaciers and polar ice accumulation, growth of sea and lake ices, climate change, snow melt flooding etc. These hydrological models need accurate precipitation phase discrimination schemes to closely portray e. LÄS MER

4. 3. Reef Futures : Exploring the dynamics of transformative change in marine social-ecological systems

   Författare :Franciska von Heland; Per Olsson; Beatrice Crona; Marja Spierenburg; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; transformative change; marine governance; multi-stakeholder collaboration; multi-level governance; institutional entrepreneurship; boundary work; narratives; Coral Triangle; Sustainability Science; vetenskap om hållbar utveckling;

   Sammanfattning : The thesis explores issues relating to transformative change in the context of marine governance in the Coral Triangle, and the effects of such change processes on policy, stakeholder relations and management activities. Paper 1 studies how change-oriented actors (institutional entrepreneurs) operating at the international level can introduce and purposefully navigate large-scalechange processes. LÄS MER

5. 4. Rowing social-ecological systems: morals, culture and resilience

   Författare :Jacob von Heland; Carl Folke; Sverker Sörlin; Paul Sinclair; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; resilience; culture; moral; complex social-ecological systems; southern Madagascar; Planetary Boundaries; naturresurshushållning; Natural Resources Management;

   Sammanfattning : The shift from management and governance of ecosystems to relational complex adaptive social-ecological systems (SES) emphasizes a dynamic and integrated humans-in-nature perspective. Such a shift also needs to investigate how diversity and differences in cultures and morals relate to the existence of SES. LÄS MER

7. 5. Making transformation happen : Institutional entrepreneurship and boundary management in the Coral Triangle

   Författare :Franciska Rosen; Per Olsson; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This licentiate thesis sets out to investigate the dynamics of transformative change in social-ecological systems. That is, how large-scale sustainability transitions can be initiated and purposefully navigated. LÄS MER