Essays about: "pioneer species"

Showing result 16 - 20 of 26 essays containing the words pioneer species.

  1. 16. Svartgran – ett alternativ när allt ser mörkt ut? : en kartmodell för att visa lämpliga ståndorter för odling av svartgran

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

    Author : André Ahlberg; Björn-Erik Lilja; [2013]
    Keywords : Picea mariana; föryngringsproblem; torvmark; frost; Åsele kommun;

    Abstract : A common problem in forestry is plant death caused by frost. The risk of frost is highest on wind protected, flat or low-lying areas in the terrain. Here you often have regeneration problems with Norwegian spruce which is especially sensitive to spring frost. READ MORE

  3. 17. The effects of mother trees and site conditions on the distribution of natural regeneration establishment in a Bornean rainforest disturbed by logging and fire

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

    Author : Sebastian Backlund; [2013]
    Keywords : Dipterocarpaceae; Dipterocarps; dispersal; mother trees; natural regeneration; site factors; tropical rainforest; Dipterocarper; moderträd; naturlig föryngring; spridning; ståndortsfaktorer; tropisk regnskog;

    Abstract : In the tropics, logging and wild fire can result in degraded secondary forests with lower biodiversity than in the natural forest. One way to limit forest degradation is to rehabilitate the present large areas of secondary forests. READ MORE

  4. 18. The influence of active bomas on habitat choice of the common warthog (Phacochoerus africanus)

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Pärerik Thorp; [2012]
    Keywords : common warthog; behaviour; active bomas; habitat choice;

    Abstract : The common warthog (Phachocoerus africanus) is a relatively long-legged pig with noticeable curved tusks, a short neck and three pairs of facial warts. It has four recognized subspecies. The common warthog is a non-migratory ungulate living on the African savannah. It is a hindgut fermenter and predominantly dependent on high-quality foods. READ MORE

  5. 19. Klibbalens gödslingseffekt på volymproduktionen i ett blandbestånd av gran och klibbal : en simulering i Heureka

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

    Author : Therese Andersson; Ronja Jägbrant; [2012]
    Keywords : kväve; kvävefixering; blandskog; blandskogseffekt; Picea abies; Alnus glutinosa; StandWise; biologisk gödsling;

    Abstract : A secondary and a pioneer tree species can with advantage be included in a mixed stand to increase the use of sunlight. Nitrogen-fixing plants have been shown to increase the supply of nitrogen in the soil by, for example, litter fall. This deposition acts as a biological fertilization, which may be used by non-fixing plants. READ MORE

  6. 20. Comparison of growth, basal area and survival rates in ten exotic and native species in Northern Sweden

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

    Author : Kevin Del Rey Morris; [2010]
    Keywords : exotic species; forest regeneration; growth; northern Sweden; survival;

    Abstract : As choice of species is important to reforest harvested areas and regenerate damaged areas, the present study compares growth of ten different species in Northern Sweden. Height growth, diameter, basal area and survival rates were compared, fifteen years after planting. READ MORE