APIS Bibliography

Title	Authors	Year
Increases in soil acidity in north west Wales between 1957 and 1990	…	1991
Changes in species composition of semi-natural vegetation associated with the increase in atmospheric inputs of nitrogen	Pitcairn, C…	1991
Single and Interactive Effects of Low Levels of O3, SO2 and NO2 on the Growth and Yield of Spring Rape.	Adaros, G…	1991
Decline of ectomycorrhizal fungi in Europe.	Arnolds, E…	1991
Acid Rain - Critical and Target Load Maps for the United Kingdom	Environment…	1991
Seasonal variations in acidic pollutant inputs and their effects on the chemistry of stemflow, bark and epiphyte tissues in three oak woodlands in N.W. Britain	Farmer, A.M…	1991
Effects of nitrogen loading on wetland ecosystems, with particular reference to atmospheric deposition	Morris, J.T…	1991
Zeigerwerte von Pflanzen in Mitteleuropa	Ellenberg,…	1991
Proceedings of the 2nd workshop on sources of variation in ecotoxicological tests with Daphnia magna	Van der…	1991
Conservation of freshwater fish in the British Isles: the current status and biology of threatened species. Aquatic Conservation	Maitland, P…	1991