Essays about: "ekologi"

Showing result 1 - 5 of 541 essays containing the word ekologi.

  1. 1. Land reclamation by reindeer lichens : On the complexity of substrate and reindeer grazing on Cladonia spp. dispersal

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

    Author : Christine Godeau; [2019]
    Keywords : Artificial dispersal Quartzite quarry; Reindeer lichens; Reindeer winter grazing; Substrate.;

    Abstract : Reindeer lichens are on a dramatic decline in Sweden, with a 71 % decrease in abundance over the last 60 years. Reindeer (Rangifer tarandus tarandus L.) management, undertaken by indigenous Sámi people, depend upon extensive winter grazing grounds with abundant reindeer lichen cover. READ MORE

  2. 2. Effects of land use on wetland carbon storage and ecosystem services in the tropics : A first estimation investing rural wetlands in central and eastern Uganda

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

    Author : Astrid Hedman; [2019]
    Keywords : tropical ecosystems; wetlands; carbon stocks; ecosystem services; climate change;

    Abstract : Wetlands provide important ecosystem services (ES) by storing large amounts of organic carbon (OC) and being of high biological, cultural, and economical value. Uganda is covered by vast wetland areas but has with a booming population rapidly been decreasing due to pressure on lands. READ MORE

  3. 3. Examining the competitive abilities of cornflower (Centaurea cyanus) in a growth chamber experiment.

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

    Author : Emil Karlsson; [2019]
    Keywords : Centaurea cyanus; Papaver rhoeas; Avena sativa; Cornflower; Growth chamber; Plant competition; Plant ecology; LAI; Root biomass; Root length; Biomass; Dry weight; Interspecific competition; Blåklint; Kärlväxter; Konkurrensförmåga; Ekologi;

    Abstract : Competition between different species (interspecific competition) is an important factor to consider when estimating population trends, geographic distributions, and management options of species. Many historically common vascular plant species found in agricultural environments have been negatively affected by changes in community composition and in turn, changes in competition pressures. READ MORE

  4. 4. Flygmekanik i sidledsmanöver hos Svartvit flugsnappare (Ficedula hypoleuca)

    University essay from Lunds universitet/Examensarbeten i biologi

    Author : Ludwig Nilsson; [2019]
    Keywords : Biology and Life Sciences;

    Abstract : There is not much research done regarding maneouvering flight on Birds. What has been done surrounding the area usually involves steady flight and not maneuvering. For the most part studies concern bats, insects or hummingbirds. READ MORE

  5. 5. Vegetation responses to summer- and winter warming : flower power in the Alaskan tussock tundra?

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

    Author : Maja Wressel; [2018]
    Keywords : Arctic vegetation; snow depth; warming; vertical root distribution; tundra;

    Abstract : Plants have an important role in the tundra carbon (C) cycle by storing C in primary production and thus potentially counteract the C released from thawing permafrost. Tundra vegetation is limited by nitrogen (N), which is predicted to increase with rising temperatures and increased snow depth. READ MORE