[Defence mechanisms in conifers against bark beetles [Norway]]

agentes nocivos agronomic characters animal animal nuisible animales animales nocivos animals arbre arbre brise-vent arbre forestier arbre pour bois de construction arthropode arthropods biological control breeding breeding aims ceratocystis champignon coleoptera conifere conifers crops cultivos disease resistance economic plants escandinavia escarabajos de la corteza europa europe facteur nuisible forest trees fungi gimnospermas gymnosperme gymnosperms injurious factors insecte insecte nuisible insectos insects invertebrados invertebrates ips lutte biologique noruega norway noxious animals objetivo de mejoramiento organisme nuisible pest control methods pest insects pest resistance pests picea picea abies pinaceae plagas plantas plantas protectoras plante plante de culture plante de protection plante pour construction plants productos productos de origen vegetal products produit protective plants resinas resine resins resistance to injurious factors resistencia a la enfermedad resistencia a las plagas scandinavia scandinavie scolyte structural crops timber trees trees vegetable products windbreak trees