Essays about: "tree cavities"

Showing result 6 - 10 of 10 essays containing the words tree cavities.

  1. 6. Utfodringsalternativ till vitryggig hackspett (Dendrocopos leucotos) på djurpark

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

    Author : Maria Hiertonn Oscarsson; [2016]
    Keywords : vitryggig hackspett; utfodringsalternativ; berikning; djurparksdjur;

    Abstract : In the last decades, the Swedish forests has changed drastically in a relatively short time. One of the species most affected by the change is the white-backed woodpecker (Dendrocopos leucotos) and is therefore endangered in Sweden. READ MORE

  3. 7. Comparison of tree cavity abundance and characteristics in managed and unmanaged Swedish boreal forest

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Sophie Michon; [2014]
    Keywords : birds; boreal forest; forest management; tree cavities; tree holes;

    Abstract : Tree cavities are major components of the forest ecosystem worldwide as they are required substrate for a large number of species (including nesting and roosting birds, mammals, fungi, and insects). The present study aimed to provide new knowledge on cavity density and cavity tree characteristics in the Swedish boreal zone where only little information exists on this subject. READ MORE

  4. 8. Effects of tree retention on cavity-nesting birds in northern Sweden

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Eva Domingo Gómez; [2014]
    Keywords : clear-cuts; tree retention; cavities; biodiversity; primary excavators;

    Abstract : Tree cavities are of high ecological value because they influence the abundance, diversity, and conservation of many terrestrial animals in forests worldwide. However, due to forest management practices, cavity-users are under a serious threat in many forest ecosystems. READ MORE

  5. 9. Evaluation of artificial habitats for saproxylic oak invertebrates: Effects of substrate, composition and distance from dispersal source

    University essay from Institutionen för fysik, kemi och biologi

    Author : Anna Larsson; [2008]
    Keywords : artificial environment; hollow oak; Quercus robur; saproxylic beetles; Sweden; wood mould boxes;

    Abstract : Saproxylic species living in old hollow trees have low dispersal rate. Many of the species are threatened since their micro habitats are rare. To prevent some of these species from going extinct their habitats have to have the right management. In some areas artificial environment could be a solution. READ MORE

  6. 10. Datering av röta i hålekar

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Joakim Roswall; [2006]
    Keywords : röta; hålekar; datering; trädhåligheter;

    Abstract : I have chosen in this work to examine which factors are affecting the artificially creation of a tree cavity containing decomposed wood. The purpose of the work is to find out which factors are affecting the most when a tree cavity is created, and to apply these results when you artificially try to create a tree cavity. READ MORE