APIS Bibliography

Title	Authors	Year
Observations on the changes in nitrate concentrations in seven upland moorland catchments in north eastern Scotland	Black, K.E…	1993
Critical loads for peat soils	Cresser, M.…	1993
Distribution and decline of endangered herbaceous heathland species in relation to the chemical composition of the soil	Houdijk, A.…	1993
Nitrogen eutrophication and critical load for nitrogen based upon changes in flora and fauna in (semi)-natural terrestrial ecosystems	Bobbink, R…	1993
Effect of acid rain on pine needles as food for capercaillie in winter	Spidsx, T.K…	1993
Air Pollution and Tree Health in the United Kingdom	DOE, .	1993
Atmospheric deposition of sulphur and nitrogen in heathland ecosystems.	Bobbink, R…	1993
The effect of external stress and disturbance factors on Calluna dominated heathland vegetation.	Berdowski,…	1993
The Deposition of Atmospheric Ammonia and Its Effects on Plants	Pearson, J…	1993
Direct damage to vegetation caused by acid rain and polluted cloud: definition of critical levels for forest trees.	Cape, J.N…	1993