Essays about: "biotic and abiotic"

Showing result 11 - 15 of 59 essays containing the words biotic and abiotic.

  1. 11. Comparison of native and introduced tree species in a range from low to high productivity sites in southern Sweden

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Gailene Brazaityte; [2023]
    Keywords : introduced tree species; low productivity sites; moderate productivity sites; high productivity sites; Picea abies; Pinus sylvestris; Betula pendula; Picea glauca; Picea mariana; Picea sitchensis; Pinus contorta; Pseudotsuga menziesii; Abies grandis; Populus balsamifera; Larix x eurolepis; Populus tremula × Populus tremuloides;

    Abstract : The dilemma of climate change, biodiversity conservation and economic efficiency in nowadays forestry leads us to search for the new solutions. Introduction of non-native tree species becomes a more frequently explored field as a solution for the future problems. READ MORE

  3. 12. Biologisk bekämpning av rotgallnematoderna Meloidogyne chitwoodi & Meloidogyne fallax

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Ellen Johansson; [2022]
    Keywords : Växtparasitära nematoder; Sedentära nematoder; Tillsättande biologisk bekämpning; Pasteuria spp.;

    Abstract : Bland de växtparasitära nematoderna är släktet rotgallnematoder ett av de ekonomiskt sett mest betydelsefulla. I Sverige har ett flertal arter av rotgallnematoder påträffats och bland de som senast påträffats hör Meloidogyne chitwoodi och M. fallax som upptäcktes i Sverige år 2017 respektive 2018. Meloidogyne chitwoodi och M. READ MORE

  4. 13. The Biogeographical Extent and Global Synchronicity of the Late Miocene Reticulofenestra pseudoumbilicus Paracme

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Joseph Asanbe; [2022]
    Keywords : late Miocene; biogenic bloom; nannofossil biostratigraphy; paleo-productivity; Reticulofenestra size variation;

    Abstract : Previous biostratigraphic studies in the Indian Ocean, equatorial Pacific, Atlantic Ocean and the Caribbean Sea document the temporal disappearance of Reticulofenestra pseudoumbilicus in the late Miocene (Tortonian age). This interval has been subsequently defined as the R. pseudoumbilicus paracme. READ MORE

  5. 14. BVOC emission variability for Norway spruce (Picea abies) in Hyltemossa, Sweden

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Alexandra Arnsteg; [2022]
    Keywords : BVOC; isoprene; monoterpenes; induced emission; light dependency; temperature; Norway spruce.; Earth and Environmental Sciences;

    Abstract : Biogenic volatile organic compounds (BVOC) are known as hydrocarbons emitted into the atmosphere from the biosphere. They have physiological and ecological functions such as communication within the plant and plant – plant, protection against environmental stress factors and defense against herbivores attack. READ MORE

  6. 15. Effects on natural seed regenerated Silver birch (Betula pendula Roth) and Downey birch (Betula pubescens Ehrh) by mechanical soil scarification and environmental factors : påverkan på naturligt fröföryngrad Glasbjörk (Betula pubescens Ehrh) och Hängbjörk (Betula pendula Roth) av mekanisk markberedning och omgivande faktorer

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Oskar Karlsson; [2022]
    Keywords : natural birch regeneration; Birch seed regeneration; soil scarification;

    Abstract : The awareness of forest biodiversity as well as the demand for a higher proportion of deciduous tree species in Swedish forests increases. As such, focus is shifting towards the management of naturally seed regenerated Silver birch (Betula pendula Roth) and Downey birch (Betula pubescens Ehrh). READ MORE