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Conifer aphids in an air-polluted environment. I. Aphid density, growth and accumulation of sulphur and nitrogen by Scots pine and Norway spruce seedlings

1993

Holopainen, J.K. | Mustaniemi, A. | Kainulainen, P. | Satka, H. | Oksanen, J. (Department of Environmental Sciences, University of Kuopio, PO Box 1627, SF-70211 Kuopio (Finland))

aphididae forests pinus sylvestris ennemi naturel sulphur dioxide contaminantes arboles forestales plagas de plantas/ polucion del aire dioxido de azufre insectos daninos cinara pilicornis foret ...
Department for Environment, Food and Rural Affairs - United Kingdom
The effects of simulated acid rain on growth and susceptibility to predation of Phratora polaris (Col., Chrysomelidae)

1995

Palokangas, P. | Neuvonen, S. | Haapala, S. (Kevo Subarctic Research Institute, University of Turku, A777 Kevo, FIN-99800 Ivalo (Finland))

coleoptera forests growth ennemi naturel carabidae ecologie phratora polaris arboles forestales insectos daninos thomisidae foret betula pubescens subsp. tortuosa ...
Department for Environment, Food and Rural Affairs - United Kingdom