Sökning: "kanaliserade vattendrag"

Hittade 2 uppsatser innehållade orden kanaliserade vattendrag.

1. 1. Kanalisering och restaurering av vattendrag och dess påverkan på mossamhällen i strandzonen

   Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

   Författare :Carola Knudsen; [2019]
   Nyckelord :Bryophytes; liverworths; mosses; channelization; restoration; stream ecosystem; bryophyte communities; riparian zone; Mossa; mossor; kanaliserade vattendrag; restaurering; mossamhällen; sötvattensekosystem; levermossor; strandzonen;

   Sammanfattning : In the 1850s when the timber floating began in Sweden many streams were channelized, which meant that the streams were straightened out, side channels were closed, and stones, trees and boulders were moved out to the banks of the streams. These measures altered the morphology of the streams, causing impediments to water moving in from the stream to the riparian zone, and reduced flooding frequency. LÄS MER

3. 2. Flottledsåterställning i norra Sverige : effekter på habitatkvalitet och populationstätheter av juvenil öringar (Salmo trutta L.)

   L3-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

   Författare :Johan Styffe; [2008]
   Nyckelord :flottledsrestaurering; salmo trutta; juvenila öringar; populationstäthet; habitatpreferenser;

   Sammanfattning : In an effort to evaluate the effects of restorations of float ways on population density of stream dwelling fish in relation to the changes in habitat, I studied the physical habitat restored and channalized sites and their population density of brown trout (Salmo trutta L.) in three streams in the municipality of Sorsele. LÄS MER