APIS Bibliography

Title	Authors	Year
Physiological effects of long term exposure to low concentrations of SO2 and NH3 on poplar leaves.	Hove, L.W.A…	1991
Increases in soil acidity in north west Wales between 1957 and 1990	…	1991
Nitrate in soil water	Westling, O…	1991
Changes in species composition of semi-natural vegetation associated with the increase in atmospheric inputs of nitrogen	Pitcairn, C…	1991
Decline of ectomycorrhizal fungi in Europe.	Arnolds, E…	1991
Effects of nitrogen loading on wetland ecosystems, with particular reference to atmospheric deposition	Morris, J.T…	1991
Physiological-effects of long-term exposure to low concentrations of SO2 and NH3 on poplar leaves	Hove, L.W.A…	1991
Nitrogen Uptake and Allocation by Calluna-Vulgaris (L) Hull and Deschampsia-Flexuosa (L) Trin Exposed to 15NH3	Dueck, T.A…	1991
Acid deposition: its nature and impacts	Last, F.T…	1991
Conservation of freshwater fish in the British Isles: the current status and biology of threatened species. Aquatic Conservation	Maitland, P…	1991