Sökning: "timber-floating"
Visar resultat 1 - 5 av 16 uppsatser innehållade ordet timber-floating.
1. “It was a free and healthy job” : timber floating on the river Ångermanälven in the 20th century
Master-uppsats, SLU/Dept. of Forest Ecology and ManagementSammanfattning : The exploitation of northern Sweden's forests began in about the 1830s and continued expanding northwards over the following decades. A key factor that enabling the exploitation of these forests was the natural infrastructure, such as the network of rivers, creeks and flooding during the summer, which made it possible to float timber from the forests to the sawmills on the coast. LÄS MER
2. Characteristics of instream wood following alluvial river restoration : Using Uncrewed Aerial Vehicles
Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : River restoration is something that is often used to help restore watercourses that were historically used for timber floating. In these restorations, instream wood (IW) plays a big role in increasing biodiversity and habitat heterogeneity in watercourses. LÄS MER
3. The end of the timber frontier in northern Sweden : early logging, natural forests and the frontier concept
Master-uppsats, SLU/Dept. of Forest Ecology and ManagementSammanfattning : The Fennoscandian forests experienced drastic changes in the 19th century. The high demand for timber during the European industrialization pushed the timber companies towards increasingly remote forest landscapes for resource extraction. LÄS MER
4. Restaureringens effekt på öringpopulationen
Kandidat-uppsats, SLU/Dept. of Forest Ecology and ManagementSammanfattning : Until the 1970s, rivers in Sweden were used for timber floating. In order for the floating to be as efficient as possible, with a minimum of timber getting stuck, many rivers were cleared. Large rocks and boulders were removed from the main channel and tributaries, backwaters and shallow areas were secluded. LÄS MER
5. Biodiversity and habitat conditions in reaches with high flow velocity along gradients in hydrological and geomorphological alteration : A study of six rivers in Sweden
Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : The vast majority of rivers in the developed world are affected by human alteration, which in turn negatively affects the species that rely on these highly diverse and species rich areas to survive. Homogenization of previously heterogenic areas due to a change in water discharge and the substrate availability in the rivers is often regarded as the main reason for the loss of species richness in rivers and the riparian zone. LÄS MER
