Sökning: "saproxylic"
Visar resultat 16 - 20 av 52 uppsatser innehållade ordet saproxylic.
16. Lövskogsgynnande åtgärders effekt på vitryggig hackspett : En studie över hur lövskogsåtgärder påverkar födoinsekter för den vitryggiga hackspetten (Dendrocopos leucotos) i Västerbotten
Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : Due to heavily managed forests in Sweden, there has been a rapid decline of deadwood and deciduous-rich areas since the 1950s. As a result of this, 2000 forest species are now red-listed of which 700 is in heavy need of deadwood. LÄS MER
17. The importance of Ecoparks for saproxylic beetles : a study on general ecological hypotheses in differently managed landscapes
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : Current forestry practices have led to a decline of deadwood availability in Swedish forests. Even though deadwood has increased somewhat in Swedish forests in later years, it is still far from estimated deadwood threshold levels and of those found in natural systems. This has in turn led to a decline in species associated with deadwood e.g. LÄS MER
18. Saproxylic beetles in Populus tremula fauna depots - how do you construct the best depot?
Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : The biodiversity of saproxylic organisms and in the case of this study, saproxylic beetles, is dependent on the amount and quality of course woody debris (CWD) in the environment. Over the past decades the quantity of CWD in Swedish forests has increased, yet the quality has decreased, forests are managed and exploited, and old-growth forests are rarer. LÄS MER
19. Effect of distance to urban areas on saproxylic beetles in urban forests
Master-uppsats, Karlstads universitet/Avdelningen för biologiSammanfattning : Urban forests play key roles in animal and plant biodiversity and provide important ecosystem services. Habitat fragmentation and expanding urbanization threaten biodiversity in and around urban areas. Saproxylic beetles can act as bioindicators of forest health and their diversity may help to explain and define urban-forest edge effects. LÄS MER
20. Dödved och artrikedom : påverkar dödvedssubstratformen artrikedomen av vedlevande skalbaggar i luckhuggna restaureringsbestånd?
Kandidat-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : Volym och diversitet av dödved påverkas negativt av skogsbruk, vilket i sin tur leder till negativa effekter på det mycket stora antal arter som lever i död ved. För att reducera de negativa effekterna på vedlevande arter krävs att rätt åtgärder utförs, t.ex. att rätt typ av habitat för dessa arter skapas. LÄS MER