Essays about: "GPP"

Showing result 16 - 20 of 40 essays containing the word GPP.

  1. 16. A remote-sensing approach to studying drought resistance in Swedish old-growth and production forests

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Julika Wolf; [2020]
    Keywords : Physical Geography and Ecosystem Analysis; drought impacts; old-growth forests; forest management; remote sensing; Earth and Environmental Sciences;

    Abstract : Boreal forest ecosystems are predicted to experience hotter and drier summers due to climate change, leading to more frequently reduced soil water availability and an increased risk of droughts, as was already the case in Northern Europe during the severe summer drought of 2018. Prolonged water stress in forest ecosystems can lead to impacts ranging from reduced photosynthesis to forest dieback. READ MORE

  3. 17. The role of wood ants (Formica rufa) in the Arctic tundra and how climate change may alter this role

    University essay from

    Author : Michael Meijer; [2020]
    Keywords : Wood ants; ants; mounds; climate change; arctic tundra; ecosystem; ecology; vegetation; arthropods;

    Abstract : In the Arctic tundra, wood ants play an important ecological role in aerating the soil, cycling nutrients, for seed dispersal and, as biological control by preying on forest pest insects during outbreaks. The increase in temperature, caused by climate change, is positively associated with ant abundance. READ MORE

  4. 18. The role of wood ants (Formica rufa) in the Arctic tundra and how climate change may alter this role

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

    Author : Michael Meijer; [2020]
    Keywords : Wood ants; ants; mounds; climate change; arctic tundra; ecosystem; ecology; vegetation; arthropods;

    Abstract : In the Arctic tundra, wood ants play an important ecological role in aerating the soil, cycling nutrients, for seed dispersal and, as biological control by preying on forest pest insects during outbreaks. The increase in temperature, caused by climate change, is positively associated with ant abundance. READ MORE

  5. 19. Comparison of soil CO2 efflux between different surface covers on a clear-cut and forest stand in southern Sweden, Hyltemossa

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Pamela Huskin Okinedo; [2020]
    Keywords : Soil CO2 efflux; Soil respiration; Soil moisture; Soil temperature; Clear-cut; Forest stand; Net ecosystem exchange; Photosynthetically active radiation; Carbon.; Earth and Environmental Sciences;

    Abstract : Large amounts of carbon in the terrestrial biosphere are stored in forest ecosystems and its soil. Once the forest ecosystem is disturbed the release of this carbon can drive positive feedback to global warming. Humans impact the forest ecosystem through clear-cutting for wood production and other commercial purposes. READ MORE

  6. 20. Implications of a dynamic vertical root distribution for modelled water and carbon fluxes across selected ecosystems : incorporating a novel rooting scheme into LPJ-GUESS

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Lasse Keetz; [2019]
    Keywords : Physical Geography and Ecosystem Analysis; Ecosystem Modelling; LPJ-GUESS; Vertical Root Distribution; Dynamic Root Distribution; Carbon and Water Fluxes; Earth and Environmental Sciences;

    Abstract : Roots play a key role in terrestrial carbon and water cycles, and therefore for the global climate system. They mediate plant evapotranspiration, influence photosynthetic processes and are responsible for atmospheric carbon transport into the pedosphere. Fine roots, in particular, are chiefly regulating water and nutrient uptake. READ MORE