APIS Bibliography

Title	Authors	Year
Nitrogen and drought effects on ectomycorrhizae of Norway spruce [Picea abries L. (Karst.)].	Nilsen, P…	1998
Relationships between atmospheric nitrogen inputs and the vertical nitrogen and phosphorus concentration gradients in the lichen Cladonia portentosa	Hyvdrinen,…	1998
Significance of soil properties for content and distribution of cadmium and lead in natural calcareous soils	Sanchez-…	1998
Effects of experimental acidification and liming on terrestrial invertebrates: implications for calcium availability to vertebrates	Ormerod, S.…	1998
Ammonia concentrations at a site in southern Scotland from 2 yr of continuous measurements	Burkhardt,…	1998
The phytoavailability of cadmium to lettuce in long-term biosolids-amended soils	Brown, S. L…	1998
Soil nitrous oxide and nitric oxide emissions as indicators of the exceedance of critical loads of atmospheric nitrogen deposition in semi-natural ecosystems	Skiba, U.;…	1998
National Recommended Water Quality Criteria	EPA, US	1998
Ecosystem research and the European Union policy needs	Lawton, (…	1998
UNECE Critical Levels Workshop Proceedings	Guderian, R…	1998