NØF 2017: Reforestation without insecticides ... | Ane Vollsnes скачать в хорошем качестве

NØF 2017: Reforestation without insecticides ... | Ane Vollsnes

"Reforestation without insecticides. Protecting spruce seedlings against pine weevils on a clear felling." presented by Ane Vollsnes --- Norwegian forest owners must assure that a new forest will grow in the area after a clear felling. For spruce (Picea abies) forests, this is normally done by planting young seedlings from a forest nursery. Pine weevils (Hylobius abietis) are attracted to the smell of stubs and fly into clear fellings to mate and lay eggs near the roots under the stubs. At the same time, they eat the bark off the newly planted seedlings, causing great losses unless the plants are protected by an insecticide. There is a drive all over Europe to avoid these insecticide treatments for environmental and worker health reasons. One solution is to cover the lower parts of the stems with a layer of wax. Thus, the seedlings are mechanically protected instead of chemically protected. In the talk, I will describe the biology of the plants and insects and show how we are working to make this environmentally friendly method applicable to the forest nurseries and the forest owners. In an effort to improve the method further, we are now doing choice experiments with the weevils, mixing repellents into the wax. --- From the third biennial conference of the Norwegian Ecological Society, taking place on the 12th and 13th of January 2017 at Blindern Campus, Oslo, organized and hosted by the Centre for Ecological and Evolutionary Synthesis (CEES). The theme of the conference is Evolutionary Ecology, emphasizing the growing links and merger between the separate traditions of ecology and evolutionary biology. http://www.mn.uio.no/cees/english/res...