Sökning: "productivity rates"

Visar resultat 1 - 5 av 149 avhandlingar innehållade orden productivity rates.

  1. 1. Seagrass productivity : from plant to system

    Författare :Diana Deyanova; Mats Björk; Mirta Teichberg; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Seagrass; Chlorophyll a fluorescence; Ageing; Productivity; Seasonality; Stress response; Plant Physiology; växtfysiologi;

    Sammanfattning : Seagrasses form one of the most productive habitats on earth and are recognized as very efficient carbon sinks. The levels and patterns of productivity within and across different seagrass systems vary widely due to natural or human-induced factors. LÄS MER

  3. 2. The role of nutrients for stream ecosystem function in Arctic landscapes : drivers of productivity under environmental change

    Författare :Maria Myrstener; Ryan A. Sponseller; Reiner Giesler; Ann-Kristin Bergström; Tenna Riis; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nutrients; Stream; Arctic; Boreal; Primary productivity; Algae; Biofilm; Nutrient limitation; Nitrogen; Phosphorus;

    Sammanfattning : Arctic and sub-Arctic freshwaters are currently experiencing substantial ecosystem changes due to the effects of global warming. Global warming effects on these freshwaters include increasing water temperatures, altered hydrological patterns, shifts in riparian vegetation and changes in the export of nutrients and carbon from soils. LÄS MER

  4. 3. Technological breakthroughs and productivity growth

    Författare :Harald Edquist; Handelshögskolan i Stockholm; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

    Sammanfattning : This dissertation consists of four self-contained studies concentrating on the productivity development following major technological breakthroughs. All four studies are concerned with measurement issues of productivity. LÄS MER

  5. 4. Macroeconomic Studies on Fiscal Policy and Real Exchange Rates

    Författare :Göran Hjelm; Nationalekonomiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; econometrics; economic theory; Total factor productivity; Economics; Real exchange rates; Structural VAR models; Partisan models; Fiscal policy; Fiscal contractions; economic systems; economic policy; Nationalekonomi; ekonometri; ekonomisk teori; ekonomiska system; ekonomisk politik;

    Sammanfattning : This thesis contains four empirical macroeconomic studies and the papers may briefly be summarized as follows. In the first paper, we use both descriptive statistics and regression analysis to investigate whether movements in real exchange rates and money supply before and during fiscal contractions matter for the macroeconomic outcome. LÄS MER

  7. 5. Essays on Exchange Rates and Macroeconomic Stability

    Författare :Anders Bergvall; Philip Lane; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Exchange rates; Monetary policy; Macroeconomic stability; Nationalekonomi; Economics; Nationalekonomi; nationalekonomi; Economics;

    Sammanfattning : This thesis consists of three self-contained essays.Essay 1 investigates the relevance of the exchange rate regime for macroeconomic stability. I simulate hypothetical macroeconomic developments under different hypothetical regimes in Sweden during the period 1974-1994. LÄS MER