Essays about: "B. pubescens"

Found 5 essays containing the words B. 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. Effects of climate warming on the performance of three boreal tree seedling species in interaction with moss cover and fire history

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

    Author : Maria-Theresa Jessen; [2017]
    Keywords : ;

    Abstract : Forest regeneration in the form of successful seedling establishment is a key factor for the persistence of a healthy forest ecosystem. Tree seedlings grow in a complex environment shaped by over- and understory and competition for light, nutrients and water. READ MORE

  3. 3. 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

  4. 4. 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

  5. 5. Blå vägens glasbjörkar : från groning till allé

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Ewa Weise; [2010]
    Keywords : Betula; björkallé; Västerbotten; Arboretum Norr; frövila; stratifiering; frögroning; tillväxt; klimatgradient; birch alley; seed dormancy; stratification; seed germination; growth; climatic gradient;

    Abstract : Det här projektet består av en litteraturstudie på trädformig björk (Betula) i Sverige, samt en studie av glasbjörk (B. pubescens) längs en klimatgradient genom Norra Sverige och Norge. Längs den studerade gradienten skiljer sig vegetationsperiodens längd med över en månad i den kallaste delen av gradienten jämfört med den varmaste. READ MORE