APIS Bibliography

Title	Authors	Year
Mapping of ammonia pollution with epiphytic lichens in the Netherlands	Van Herk, C…	1999
Distribution in Portugal of some pollutants in the lichen Parmelia sulcata	Freitas, M…	1999
Changes in distribution and abundance of submerged macrophytes in the Inner Bay at Long Point, Lake Erie: Implications for foraging waterfowl	Knapton, R.…	1999
Closing the global N2O budget: a retrospective analysis 1500 - 1994	Kroeze, C…	1999
Concentration and distribution of extractable elements in a soil affected by tillage systems and fertilization	Lavado, R.…	1999
The influence of wooded shelterbelts on the deposition of copper, lead and zinc at Shakerley Mere, Cheshire, England	Heath, B. A…	1999
The effects of quantity and duration of simulated pollutant nitrogen deposition on root-surface phosphatase activities in Calcareous and acid grasslands: a bioassay approach	Johnson, D…	1999
Methane release from peat soils: effects of Sphagnum and Juncus.	Roura-Carol…	1999
Protocol to abate acidification, eutrophication and ground-level ozone.	UNECE, .…	1999
Nitrogen and its effects on growth, nutrient status and parasite attacks in beech and Norway Spruce	Flückiger,…	1999