Search for dissertations about: "ecological restoration"

Showing result 1 - 5 of 33 swedish dissertations containing the words ecological restoration.

2. 1. Grassland restoration : Connectivity, plant community change and cows

   Author : Rozália E. Kapás; Sara Cousins; Adam Kimberley; Lars A. Brudvig; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; biodiversity; colonization; connectivity; dispersal; distance to species pool; diversity; grassland restoration; grassland specialist species; grazing livestock; habitat availability; plant community composition; restoration; semi-natural grassland; species richness; naturgeografi; Physical Geography;

   Abstract : The ecological significance of semi-natural grasslands is high because these habitats provide a home for a diverse flora and fauna and support a range of associated ecosystem services. Due to large-scale land-use changes the extent of grassland habitat has declined. READ MORE

4. 2. 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

5. 3. Use of phytometers for evaluating ecological restoration

   Author : Anna L. Dietrich; Christer Nilsson; Martin Wassen; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bioassay; Channelization; Ecosystem change; Ecosystem response; ekologisk botanik; Ecological Botany;

   Abstract : The increase in ecological restoration can be attributed to valuation of healthyecosystems and concerns for future climate changes. Freshwaters belong among theglobally most altered ecosystems and are restored to counteract human impacts. READ MORE

6. 4. Ecosystem response to dam removal

   Author : Anna G.C. Lejon; Christer Nilsson; Birgitta Malm Renöfält; Emily Stanley; Umeå universitet; []
   Keywords : dam removal; macroinvertebrates; plant species; plant succession; restoration; riparian zone; sediment deposition; species richness; Sweden; biology; biologi; ekologisk botanik; Ecological Botany; hydrologi; Hydrology;

   Abstract : This thesis aims to improve our understanding of how riverine ecosystems respond to dam removal. Riverine and particularly riparian ecosystems are among the most variable and important features of all landscapes. READ MORE

7. 5. Evolving ecological communities in changing environments

   Author : Jacob Johansson; Evolutionär ekologi; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; adaptive dynamics; competition; community evolution; ecological communities; environmental change; evolutionary branching;

   Abstract : This thesis consists of theoretical studies of the evolutionary consequences of environmental change in ecological communities. Paper I and II are concerned with the origin of diversity, i.e. how a single lineage can split into two, under the influence of selection induced by competitive interactions (evolutionary branching). READ MORE