Essays about: "grassland ecology"

Showing result 16 - 20 of 27 essays containing the words grassland ecology.

  1. 16. Växter på övergivna betesmarker : förekomst, överlevnad och utdöende på 21 lokaler i Västmanland

    University essay from SLU/Dept. of Ecology

    Author : Erik Kohlström; [2015]
    Keywords : växter; betesmarker; igenväxning; restaurering; utdöende; överlevnad;

    Abstract : Over the past century, changes in land use have led to large scale abandonment of semi-natural grasslands throughout northern Europe. During the ensuing succession species richness declines as grassland specialist plants are out-competed by a few dominant species. READ MORE

  3. 17. Integrerat växtskydd i rapsodling

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Annika Nilsson; [2014]
    Keywords : integrerat växtskydd; direkta metoder; ogräs; förebyggande åtgärder; rapsodling; växtskadegörare;

    Abstract : Under andra delen av 1900-talet utvecklades ett stort antal kemiska bekämpnings-medel (pesticider) som gav goda kontrolleffekter mot ogräs och växtskadegörare. Dessa medel blev vanliga att använda inom det konventionella lantbruket. Under senare år har dock resistens mot bekämpningsmedel börjat utvecklas hos insekter, svampar och ogräs. READ MORE

  4. 18. Artrika vägkanter - hur påverkas de av slåtter och underhållsdikning?

    University essay from SLU/Dept. of Ecology

    Author : Hannah Brandin; [2014]
    Keywords : vägkanter; artrikedom; skötsel;

    Abstract : ABSTRACT This study is an exam work at the Department of Ecology at the Swedish Agricultural University, Ultuna, Uppsala. The field work was performed in the counties of Uppsala and Västmanland. Grassland areas, exposed to annual mowing, are known to host a variety of rare and red-listed vascular species. READ MORE

  5. 19. Restaurerade ängs- och betesmarker : restaureringseffekten på växter och insekter

    University essay from SLU/Dept. of Ecology

    Author : Anna Minnefors; [2013]
    Keywords : restaurerade naturbetesmarker; insekter; restaureringsrespons; växter; responsvariabler; tid;

    Abstract : Semi-natural grasslands have a high biodiversity and host ecologically and economically valuable ecosystems and species. Restoration on these types of land is often done by removing trees and scrubs, mowing, grazing, changing the soil by removing nutrition or changing the structure of the ground. READ MORE

  6. 20. Restoration of semi-natural grasslands, a success for phytophagous beetles (Curculionidae)

    University essay from SLU/Dept. of Ecology

    Author : Magdalena Steiner; [2013]
    Keywords : weevils Circulionidae ; semi-natural grasslands; restoration success; phytophagous beetle composition; biodiversity; specialist; generalist; feeding preferences; Sweden;

    Abstract : Semi-natural grasslands have rich plant and animal communities of high conservation value. The continuity and maintenance of these habitats depend on traditional agricultural methods, which nowadays give low economic output. READ MORE