Nitrogen deposition in Swiss forests and its possible relevance for leaf nutrient status, parasite attacks and soil acidification

acidification air pollution azote bosques damage enfermedades de las plantas enfermedades fungosas fagus sylvatica forest pests forests fosforo fungal diseases insecte nuisible maladie des plantes maladie fongique manganese manganeso nitrogen nutrient balance nutrition des plantes nutrition physiology pathogens pest insects pests of plants phosphore phosphorus physiologie de la nutrition picea abies plagas de plantas plagas forestales plant diseases plant nutrition ravageur des plantes suisse suiza switzerland