Search for dissertations about: "RIVER"

Showing result 1 - 5 of 429 swedish dissertations containing the word RIVER.

2. 1. Iron in the Lena River basin, NE Russia : Insights from microscopy, spectroscopy and isotope analysis

   Author : Catherine Hirst; Carl-Magnus Mörth; Per Andersson; Mats Erik Åström; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; iron; reactivity; isotopes; permafrost; river; Arctic; Marine Geology; maringeologi;

   Abstract : Iron is an important mediator of biotic and abiotic processes on the Earth’s surface, being an electron acceptor in organic matter degradation, a surface for organic matter and trace element adsorption, and a required element for enzymatic processes during primary production. Yet, the role of iron as a mediator of carbon and trace element cycling in high latitude, permafrost-dominated regions remains poorly investigated. READ MORE

4. 2. Indirect effects of river regulation : consequences for landbirds of reduced numbers of aquatic insects

   Author : Darius Strasevicius; Björn Malmqvist; Tapio Eeva; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Boreal region; Simuliidae; Leucocytozoon; pied flycatcher; aquatic insects; breeding success; blood parasites; bird communities; river regulation; impoundment; Biology; Biologi;

   Abstract : Abstrakt: Jag har undersökt hur älvreglering påverkar mängden knott (Tvåvingar: Simuliidae) längs flera norrlandsälvar och vilka konsekvenser denna påverkan får för den landlevande fågelfaunan. Studien visar att utbyggnad av älvar har en negativ effekt på mängden knott. READ MORE

5. 3. A Spatial Scale Approach to Fish Habitat Ecology and Impacted Rivers

   Author : Henry H. Hansen; Eva Bergman; Max Lindmark; Dana Infante; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fish Habitat Models; River Ecology; Novel Riverscapes; Spatial Scale; Fish Communities; Anthropogenic Impacts; Sustainability; River Management; River Restoration; Biology; Biologi;

   Abstract : Fish biodiversity in rivers is threatened by continual habitat loss. Evidence to support management and restoration of rivers requires information about the specific habitat requirements for entire fish communities. READ MORE

6. 4. Environmental considerations in the planning of large dam projects : a study on Environmental Impact Statements and the Southeastern Anatolia Project

   Author : Anna Brismar; Jan-Olof Lundqvist; Linköpings universitet; []
   Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Atatürk Dam. EIA; ecosystem services; environmental impact; Euphrates River; GAP; hydropower; river system; sustainable development; Tigris River; Turkey; Dammar; Miljöaspekter; Tigris; Turkiet; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

   Abstract : Large dam projects have played a key role in supporting societal development in the past and continue to be launched, primarily in developing countries. However, large dam projects also cause extensive environmental impacts in the river system, which may reduce the river system's capacity to provide goods, services, and other values apart from those generated by the project. READ MORE

7. 5. Hydrogeochemical effects of hydropower regulation on river-aquifer continuum in boreal rivers

   Author : Dmytro Siergieiev; Hjalmar Laudon; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Geochemistry; hyporheic zone; hydrology; riparian zone; Element transport; Lule River; Kalix RIver; Northern Sweden; Earth sciences; Applied Geology; Tillämpad geologi;

   Abstract : Hydropower infrastructure affects many large rivers worldwide, threatening riverine and coastal ecosystems by fragmenting flow, disturbing landscapes and water retention and altering sedimentation and primary production. This thesis investigated major impacts of hydropower regulation on hydrological and geochemical processes in large boreal rivers. READ MORE