Essays about: "Betula pubescens"

Showing result 1 - 5 of 26 essays containing the words Betula pubescens.

  1. 1. Reforestation in the far north : comparing effects of the native tree species Betula pubescens and the non-native Pinus contorta in Iceland

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Elin Fries; [2017]
    Keywords : Iceland; non-native tree species; understory vegetation; P. contorta; B. pubescens;

    Abstract : The use of non-native tree species in forestry is both praised and questioned. Foresters have often promoted their use, mainly because of higher growth rates, resilience to pests and diseases and improved survival under harsh conditions. READ MORE

  2. 2. Natural regeneration on clear cuts in Southern Sweden : how fencing, soil treatment and distance from broad-leaved forest affect tree regeneration and ground vegetation

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Jón Ásgeir Jónsson; [2016]
    Keywords : natural regeneration; forest restoration; pioneers; noble broadleaves; Picea abies; soil scarification; fencing; distance from broad-leaved forest; Raslångens ekopark;

    Abstract : The forests of Europe have seen a dramatic shift in structure, species composition and area coverage in the last centuries. Large areas previously covered by a mixed broad-leaved forest are now used for agriculture or other land uses. READ MORE

  3. 3. Riparian vegetation responses to hydropeaking : Experimental study on germination and performance of plants along rivers regulated by hydropower dams in northern Sweden

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Emelie Fredriksson; [2016]
    Keywords : Hydropeaking; riparian vegetation; germination; survival; performance; phytometer; restoration; mitigation;

    Abstract : Riparian vegetation is one of the most complex and abundant ecosystems in the world and it provides important ecosystem services. These services are affected by electricity production from hydropower dams. Hydropower accounts for 16% of the global electricity production and almost 50% in Sweden. READ MORE

  4. 4. The survival of moth larvae feeding on different plant species in northern Fennoscandia

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Ulrika Belsing; [2015]
    Keywords : winter moth; ecosystem analysis; physical geography; autumn moth; northern Fennoscandia; outbreaks and sub-arctic environment; Earth and Environmental Sciences;

    Abstract : Northern Fennoscandia belongs to the sub-arctic environment and its forests are mostly composed of mountain birch trees (Betula pubescens ssp. czerepanovii). READ MORE

  5. 5. Impacts of hydropower dams operations on plants : A greenhouse experiment on the response of germination and performance and survival of plant seedlings to direct and indirect effects of hydrological alterations resulting from hydropower dam operations

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Guillermo Guindal Estévez; [2015]
    Keywords : hydropower; riparian; erosion; Sweden; seed; flow alteration.;

    Abstract : This work helps increasing our general understanding of how plants behave under altered hydrological conditions which occur along rivers regulated by hydropower dams. Usually, natural-real environments are highly unpredictable. Consequently, research based on field data becomes challenging and results may contain uncertainty. READ MORE