Search for dissertations about: "systemekologi"

Showing result 16 - 20 of 50 swedish dissertations containing the word systemekologi.

2. 16. A network perspective on ecosystems, societies and natural resource management

   Author : Örjan Bodin; Jon Norberg; Steve Lansing; Stockholms universitet; []
   Keywords : network; seed dispersal; pollination; natural resource management; lemur catta; social networks; landscape fragmentation; Madagascar; East Africa; fisheries; resilience; co-management; NATURAL SCIENCES; NATURVETENSKAP;

   Abstract : This thesis employs a network perspective in studying ecosystems and natural resource management. It explores the structural characteristics of social and/or ecological networks and their implications on societies’ and ecosystems’ ability to adapt to change and to cope with disturbances while still maintaining essential functions and structures (i. READ MORE

4. 17. Deposit-feeding in benthic macrofauna : Tracer studies from the Baltic Sea

   Author : Lars Byrén; Ragnar Elmgren; Lisa A. Levin; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Deposit-feeding; Macrofauna; Baltic Sea; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

   Abstract : A low content of organic matter, which is largely refractory in nature, is characteristic of most sediments, meaning that aquatic deposit-feeders live on a very poor food source. The food is derived mainly from sedimenting phytodetritus, and in temperate waters like the Baltic Sea, from seasonal phytoplankton blooms. READ MORE

5. 18. Of Mangroves and Middlemen : A study of social and ecological linkages in a coastal community

   Author : Beatrice Crona; Patrik Rönnbäck; Nils Kautsky; Neil Adger; Stockholms universitet; []
   Keywords : mangroves; restoration; ecosystem goods and services; natural resource management; local ecological knowledge; social networks; social-ecological systems; East Africa; co-management; NATURAL SCIENCES; NATURVETENSKAP;

   Abstract : This thesis studies some of the links between the social and ecological components in a coastal Social-Ecological System (SES) of East Africa to gain insight into factors affecting natural resource management at a community level. It does so by assessing the return of ecosystem goods and services in restored mangroves through both ecological and socio-economic measurements, and by empirically studying variations and diversity in content of local ecological knowledge among resource users, its relation to valuation of ecosystem goods and services and its distribution across a social network. READ MORE

6. 19. Humans and Seagrasses in East Africa : A social-ecological systems approach

   Author : Maricela de la Torre-Castro; Nils Kautsky; Carl Folke; Patrik Rönnbäck; Edward H. Allison; Stockholms universitet; []
   Keywords : seagrasses; social-ecological systems; institutions; seaweed farming; artisanal fisheries; common-pool resources; natural resource management; Zanzibar; Tanzania; East Africa; Western Indian Ocean;

   Abstract : The present study is one of the first attempts to analyze the societal importance of seagrasses (marine flowering plants) from a Natural Resource Management perspective, using a social-ecological systems (SES) approach. The interdisciplinary study takes place in East Africa (Western Indian Ocean, WIO) and includes in-depth studies in Chwaka Bay, Zanzibar, Tanzania. READ MORE

7. 20. Global trade, food production and ecosystem support : Making the interactions visible

   Author : Lisa Deutsch; Carl Folke; Karin Limburg; Max Troell; David Waltner-Toews; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; global trade; food production; ecosystem support; resilience; agriculture; ecosystem performance; food consumption; ecological footprint; indicators; aquaculture; agricultural intensification; fishmeal; vulnerability; Sweden; animal feed; critical natural capital; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi;

   Abstract : Modern food production is a complex, globalized system in which what we eat and how it is produced are increasingly disconnected. This thesis examines some of the ways in which global trade has changed the mix of inputs to food and feed, and how this affects food security and our perceptions of sustainability. READ MORE