Search for dissertations about: "riparian zone"

Showing result 1 - 5 of 22 swedish dissertations containing the words riparian zone.

  1. 1. Effects of climate change on boreal wetland and riparian vegetation

    University dissertation from Institutionen för ekologi, miljö och geovetenskap, Department of Ecology and Environmental Sciences

    Author : Lotta Ström; Roland Jansson; Christer Nilsson; Sarah Gergel; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biomass; flooding; hydrologic niche; invasibility; riparian zone; riparian plant species; river margin; climate scenario; seed sowing experiment; species composition; species richness; transplant experiment; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Terrestrial ecology; NATURVETENSKAP Biologi Terrestrisk; limnisk och marin ekologi Terrestrisk ekologi;

    Abstract : Models of climate change predict that temperature will increase during the 21th century and the largest warming will take place at highnorthern latitudes. In addition to warming, predictions for northern Europe include increased annual precipitation and a higher proportion of the precipitation during winter falling as rain instead of snow. READ MORE

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

    University dissertation from Institutionen för ekologi, miljö och geovetenskap, Department of Ecology and Environmental Sciences

    Author : Dmytro Siergieiev; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Geochemistry; hyporheic zone; hydrology; riparian zone; Element transport; Lule River; Kalix RIver; Northern Sweden; Earth sciences - Atmosphere and hydrosphere sciences; Geovetenskap - Atmosfärs- och hydrosfärsvetenskap; 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

  3. 3. Water quality modeling based on landscape analysis: importance of riparian hydrology

    University dissertation from Institutionen för ekologi, miljö och geovetenskap, Department of Ecology and Environmental Sciences

    Author : Thomas Grabs; Jan Seibert; Kevin Bishop; Hjalmar Laudon; Brian McGlynn; Georgia Destouni; Irena Creed; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Water quality model; terrain analysis; geographical information system GIS; riparian zone; total organic carbon TOC; boreal catchments; NATURAL SCIENCES Earth sciences Atmosphere and hydrosphere sciences Hydrology; NATURVETENSKAP Geovetenskap Atmosfärs- och hydrosfärsvetenskap Hydrologi; Physical Geography; geografi med naturgeografisk inriktning;

    Abstract : Several studies in high-latitude catchments have demonstrated the importance of near-stream riparian zones as hydrogeochemical hotspots with a substantial influence on stream chemistry. An adequate representation of the spatial variability of riparian-zone processes and characteristics is the key for modeling spatio-temporal variations of stream-water quality. READ MORE

  4. 4. Ice, wood and rocks regulating elements in riverine ecosystems

    University dissertation from Umeå : Umeå universitet, Institutionen för ekologi, miljö och geovetenskap

    Author : Johanna Engström; Christer Nilsson; Roland Jansson; James Helfield; Tenna Riis; [2010]
    Keywords : riparian zone; timber floating; river restoration; cut-off side channels; hydrochory; large wood; anchor ice; fish;

    Abstract : Riparian ecosystems are of great importance in the landscape, connecting landscape elements longitudinally and laterally and often encompassing sharp environmental gradients in ecological processes and communities. They are influenced by fluvial disturbances such as flooding, erosion and sediment deposition, which create dynamic and spatially heterogeneous habitats that support a high diversity of species. READ MORE

  5. 5. Forest-stream linkages Experimental studies of foraging and growth of brown trout (Salmo trutta L)

    University dissertation from Fakulteten för samhälls- och livsvetenskaper

    Author : Pär Gustafsson; Eva Bergman; Larry Greenberg; John Armstrong; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Brown trout; diet; growth; riparian zone; forest-stream linkages; terrestrial invertebrates; light; primary production; NATURAL SCIENCES Biology; NATURVETENSKAP Biologi; Biology; Biologi;

    Abstract : Riparian vegetation along streams and rivers affects the aquatic community in numerous ways and often operates as a link for energy flux between forest and streams. The studies presented in this licentiate thesis focus on light and terrestrial invertebrates, two factors influenced by riparian zone structure, which potentially affect stream ecosystems and thus also brown trout (Salmo trutta). READ MORE