The effects of simulated acid rain on growth and susceptibility to predation of Phratora polaris (Col., Chrysomelidae)

araneae arbre forestier arthropoda betula pubescens bosques carabidae chrysomelidae coleoptera crecimiento croissance ecologia ecologie ecology enemigos naturales ennemi naturel finland finlande finlandia forest trees forests formicidae growth habitat habitats hymenoptera insecta insecte nuisible natural enemies pest insects pests of plants plagas de plantas pollution ravageur des plantes