Search for dissertations about: "river restoration"

Showing result 1 - 5 of 19 swedish dissertations containing the words river restoration.

  2. 1. 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

  4. 2. The influence of multiscale hyporheic flow on solute transport : Implications for stream restoration enhancing nitrogen removal

    Author : Ida Morén; Anders Wörman; Joakim Riml; Roy Haggerty; KTH; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Hyporheic exchange flow; Hydrological modeling; Solute transport; Stream restoration; Nitrogen; Power spectral analysis; Hydraulic and Hydrologic Engineering; Hydraulik och teknisk hydrologi;

    Abstract : Stream water that flows into and out of streambeds is called hyporheic exchange flow (HEF).It continuously interacts with groundwater and thereby affect the water quality of local streamreaches as well as downstream recipients by providing an environment where solutes andenergy can be retained and degraded. READ MORE

  5. 3. Gradients of time and complexity : understanding how riparian and instream ecosystems recover after stream restoration

    Author : Eliza Maher Hasselquist; Christer Nilsson; Stewart Rood; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; bioassessment; biodiversity; boreal; bryophyte; chronosequence; complexity; diatom; geomorphology; habitat heterogeneity; hydromorphological; macroinvertebrate; macrophyte; nitrogen cycling; river restoration; riparian buffer; stable isotopes; succession; Sweden; Environmental Science; miljövetenskap;

    Abstract : Why evaluations of the ecological outcomes of stream and river restoration have largely reported inconclusive or negative results has been the subject of much debate over the last decade or more. Understanding the reasons behind the lack of positive results is important for bettering future restoration efforts and setting realistic expectations for restoration outcomes. READ MORE

  6. 4. Modeling Atlantic salmon (Salmo salar) and brown trout (Salmo trutta) responses to river habitat alteration

    Author : Kristine Lund Bjørnås; John Piccolo; Olle Calles; Steven F. Railsback; Leif Asbjørn Vøllestad; Karlstads universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Ecohydraulics; Restoration; Natural resource management; Biology; Biologi;

    Abstract : Half the world’s river volume is affected by flow alterations and/or fragmentation, a figure that is likely to increase with the current global surge in hydropower development. At the same time, freshwater biodiversity is in rapid decline. READ MORE

  7. 5. Grow with the flow : Hydrological controls of riparian vegetation in boreal stream networks

    Author : Lenka Kuglerová; Roland Jansson; Hjalmar Laudon; Birgitta Malm-Renöfält; John Stella; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; boreal forest; channelization; groundwater; Krycklan catchment; liverworts; mosses; riparian buffers; riparian vegetation; river restoration; species richness; stream network; stream size; vascular plants;

    Abstract : What drives species diversity across landscapes is one of the most fundamental questions in ecology. Further, understanding the mechanisms underlying species diversity patterns is important not only for forming and challenging ecological theories but also essential for appropriate landscape management and effective nature conservation. READ MORE