Sökning: "stream biodiversity"
Visar resultat 1 - 5 av 35 uppsatser innehållade orden stream biodiversity.
1. Riparian plant biodiversity and community composition of ditches and straightened streams : identifying key environmental drivers in a boreal forest setting
Master-uppsats, SLU/Dept. of Forest Ecology and ManagementSammanfattning : Modified ecosystems are typically seen as degraded and having no ecological value. In many cases, the modification of the ecosystem was done more than 100 years ago and may have had time to recover and become a refugia for species that were once more common in the landscape. LÄS MER
2. Naturbaserad dagvattenhantering : gestaltningsförslag för främjandet av Bäcklösabäckens mångfald och rekreation
Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Urban and Rural DevelopmentSammanfattning : I takt med att Uppsalas utvecklingsområde Södra staden expanderas, minskar stadens grönområden och permeabla ytor för dagvattnet att infiltrera. Detta leder både till en förlust av biologisk mångfald, ekologiska spridningsvägar och en större belastning på Bäcklösas avrinningsområde som täcker stora delar av Södra staden. LÄS MER
3. Consequences of alternative forest management in riparian buffer zones : a GIS analysis
Master-uppsats, SLU/Dept. of Forest Ecology and ManagementSammanfattning : With increasing pressure from policymakers and the general public to conduct alternative forest management throughout the European Union (EU), Sweden needs to find ways to best prioritize the implementation of this alternative management. Alternative management is a term used to describe alternative management methods to clear-cut rotation forestry and can include silvicultural methods such as continuous cover forestry, management increasing proportion tree diversity and presence of broadleaves, and extended rotation lengths. LÄS MER
4. Effects of summer peaks on brown trout and Atlantic salmon growth and survival in hydropower-regulated Gullspång River
Kandidat-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Sammanfattning : Daily demands for electrical power are met through sub-daily release of turbined water in the form of hydropeaking. Hydropeaking’s changes to stream flow are listed as a threat to biodiversity in river ecosystems as it causes rapid habitat alteration such as increased depth and velocity, affecting the species living downstream. LÄS MER
5. Riparian vegetation ecology : an observational study into the effects of forest management on understory vegetation communities along boreal headwaters
Master-uppsats, SLU/Dept. of Forest Ecology and ManagementSammanfattning : Riparian forests along headwater streams have long been recognized for their role as an interface between the terrestrial and aquatic ecosystem. The over- and understory vegetation performs essential ecological and biochemical functions, which are important for stream functions. LÄS MER
