81 uppsatser · sida 2 av 6
conservation values of deciduous trees based on saproxylic insects
… the AHA method) and their content of species (species richness and abundance). Insects were collected using trunk window traps in a period of 13 weeks during the summer of 2014. The tree species included in my analysis was aspen, birch, grey alder and goat willow and I looked …
Fokus på betydelsen av konnektivitet på brandfält i boreal skog i Västerbottens län
… between burnt forests leads to an increased occurrence of fire-related insects. The study also attempts to determine in what way connectivity and other variables in a burnt forest, such as amount of living and dead wood, distance to the coast and altitude, affects fire-related …
ett exempel på medbestämmande planering
… with gravel in slopes the area is an important habitat for different kinds of insects. In the area you can also find forest species of insects like the red-listed species Aromia moschata. The forest is very varying with different ages and characters. The most common tree species …
förekomst, substratkrav och effekter av skogsbrukets naturvårdsåtgärder
Many wood living insects are considered threatened by modern forestry due to the reduction in amount of dead wood. During the last decade various methods have been used to enhance the quantity of dead wood in managed forests. However little is known how and if these methods are …
… 20°C. Frankliniella occidentalis or the Western Flower Thrips is a small insect that has become an important pest in greenhouse cultivation all over the world. The high temperatures in the greenhouse are favourable for F. occidentalis. The damages from this pest can be found in …
… shelter wood (Fig. 2-3). The pines bellow the shelter woods were all killed by insects or by a combination of competition from the shelter and insects, at an early stage. The survival lies between 72 and 97 % for all the tree species except for the Douglas-fir. The lowest …
… with 37°C, the stability during storage was very bad, with appearance of insects and growth of mold. Best stability during storage was obtained in the containers with 70°C, where the substrate had the highest dry matter content. Here the matter had the same appearance both …
fysikaliskt verkande insektsmedel : mortalitet och appliceringsteknik
… The main purpose of this thesis was to evaluate six different non-conventional insecticides and their ability to control whitefly Aleurotrachelus socialis in cassava Manihot esculenta. The aim was also to evaluate the most appropriate application technique for these products …
… of this report is to examine the possibilities to decrease the number of insects and other pathogens in a crop of pak choi (Brassica rapa), grown with different types of cover and living mulches. Included in the report is a study of literature where amongst others, a summary on …
… in the hard packed soil along our streets. They are also exposed to damaging insects and fungal diseases both local and new ones spreading from South Europe. The global warming with warmer temperatures provides a longer growing season, making it easier for insects and fungus to …
new knowledge for integrated pest management
… that cause enormous losses for farmers in many countries. The frequent use of insecticides in controlling fruit flies in fruits and vegetable has not resulted in sustainable management of the pest. Problems associated with this complete reliance on chemical control are many …
… To test the impact of each of the fungal isolates on A. obtectus mortality, insects were placed in a Petri dish and sprayed with the spore solutions in three concentrations; 1x105, 1x106 and 1x107 conidia/ml. All the fungal isolates had a high level of mycosis, ranging from …
… roaming populations of large herbivores have a positive impact on plants, insects and many other groups of organisms. From a societal point of view, there may be conflicts with agriculture and forestry; traffic safety also has to be considered. Therefore fences and wildlife …
Manuellt dödade träd vs självdöda
… and high cutting, and how these actions affect the number of wood-living insects living on dead trees. A total of 72 trees were randomly selected in four different locations in the municipality of Säffle. The trees, which were birch and alder, were all dead or dying and selected …
Elevers och lärares läsning av Edith Södergrans dikter ”Livet” och ”Triumf attfinnas till”
… a political figure of Dismodernity. Therefore, I have tried to draw a feminist insect politics out of his metamorphosis from (hu)man into insect. By doing a close reading, through the theoretical lenses of Judith Butler, Lennard J. Davis and Donna Haraway, Gregor Samsa can be …
