Sökning: "shade"

Visar resultat 1 - 5 av 35 avhandlingar innehållade ordet shade.

  1. 1. Shedding Light on Shade- and Dark-Induced Leaf Senescence

    Författare :Bastiaan Brouwer; Per Gardeström; Karin Krupinska; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Arabidopsis; darkness; light; photosynthesis; phytochrome; shade; senescence;

    Sammanfattning : Leaf senescence is the final stage of leaf development, during which the leaf relocates most of itsvaluable nutrients to developing or storing parts of the plant. As this process progresses, leaves losetheir green color and their capacity to perform photosynthesis. LÄS MER

  2. 2. The role of regeneration in plant niche differentiation and habitat specialization

    Författare :Dirk-Jan ten Brink; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; seed mass; seed size; drought; shade; seed germination; seed dormancy; seedling establishment; plant community ecology; assembly rules; habitat specialization; plant recruitment; Regeneration; niche differentiation; phylogenetic independent contrasts; plant traits; soil fertility; comparative ecology;

    Sammanfattning : To predict the effects of environmental change and nature management on the distribution of plant species, it is crucial to understand the mechanisms of plant niche differentiation and habitat specialization. The importance to habitat specialization of particular plant traits and requirement of the regenerative phase of the plants life has received scanty interest. LÄS MER

  3. 3. A Lighter Shade of Dark : Exploring the Value Adding and Value Subtracting Effects of Headquarters Attention and Involvement in Subsidiary Activities

    Författare :Amalia C. Nilsson; Henrik Dellestrand; Francesco Ciabuschi; Ram Mudambi; Uppsala universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; multinational corporation; headquarters-subsidiary relationship; attention-based view; parenting; issue selling;

    Sammanfattning : Headquarters of multinational corporations are presented with a diverse range of stimuli that influences the issues that they pay attention to and ultimately get involved in. However, headquarters have to prioritize since their attention and resources are limited, and they cannot pay attention to all issues and get equally involved in all subsidiaries. LÄS MER

  4. 4. Under the same shade - Popular perceptions of political change and the challenges of consolidating multiparty democracy in Tanzania

    Författare :Petri Ruotsalainen; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; democracy transition; consolidation of democracy; popular perceptions; customary leadership; political change; elections; peace; unity; harmony; Tanzania;

    Sammanfattning : This thesis deals with the question of how people in rural areas have perceived the change of political system from one-party to multi-party during the 1990s in Tanzania. Tanzania has to this date performed three general elections but still the ruling party CCM has a strong grip over politics in the country. LÄS MER

  5. 5. Evolution of Dispersal and Habitat Exploration in Butterflies

    Författare :Ulf Norberg; Hans Van Dyck; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Ethology and behavioural ecology; Etologi och beteendeekologi; etologi; Ethology;

    Sammanfattning : The development of wings may be one of the most important reasons for the great diversity among insects. Being able to move makes it possible to colonise new areas and explore resources in the surroundings. However, developing dispersal-related traits, like wings or flight muscles, is costly and moving can also be dangerous. LÄS MER