Adams M B, Edwards N T and Taylor G EJr 1990 Whole-plant 14C-photosynthate allocation in Pinus taeda: seasonal patterns at ambientg ad elevated ozone levels. Can. J. For. Res. 20, 152–158.
Ambler J R and Young J L 1977 Technique for determining root lenght infected by vesicular-arbuscular mycorrhizae. Soil Sci. Soc. Am. J. 41, 551–556.
Amthor J S 1988 Growth and maintenance respiration in leaves of bean (Phaseolus vulgaris L.) exposed to ozone in open-top chambers in the field. New Phytol. 110, 319–325.
Anonymous 1991 National Environmental Outlook 1990–2010. National Institute of Public Health and Environmental Protection (RIVM), Bilthoven, The Netherlands. pp 184–189.
Anonymous 1992 The environment in Europe, a global perspective. National Institute of Publis Health and Environmental Protection (RIVM), Bilthoven, The Netherlands.
Arp WJ 1991 Effects of source-sink relations on photosynthetic acclimation to elevated CO2. Plant Cell Environ. 14, 869–875.
Bender J, Mandrscheid R and Jäger H-J 1990 Analyses of enzyme activities and other metabolic criteria after five years of fumigation. Emviron. Pollut. 68, 331–343.CrossRef
Bervaes J C A and Kylin A 1972 Long and short term development of frost hardiness in Pinus sylvestris and heavy particle adenosine triphosphatase. Physiol. Plant. 27, 178–181.
Brix H 1981 Effects of nitrogen fertilizer source and application rates on foliar nitrogen concentration, photosynthesis and growth of Douglas fir. Can. J. For. Res. 11, 775–780.
Conroy J P, Smillie R M, Küppers M, Bevege D I and Barlow E W 1986 Chlorophyll a fluorescence and photosynthetic and growth responses of Pinus radiata to phosphorus deficiency, drought strees and high CO2. Plant Physiol. 81, 423–429.
Cooley D R and Manning W J 1987 The impact of ozone on assimilate partitioning in plants: A review. Environ. Pollut. 47, 95–113.CrossRefPubMed
Cure J D, Israel D W and Fufty TWJr 1988 Nitrogen stress effects on growth and seed yield of nonnodulated soybean exposed to elevated carbon dioxide. Crop Sci. 28, 671–677.
De Leeuw F A A M 1991 Ozone at ground level. In National Environmental Outlook 1990–2010. National Institute of Public Health and Environmental Protection (RIVM), Bilthoven, The Netherlands. pp 159–175.
Dizengremel P, Sasek T W, Brown K J and Richardson C J 1994 Ozone-induced changes in primary carbon metabolism enzymes of Loblolly pine needes. J. Plant Physiol. 144, 300–306.
Dueck Th A, Van der Eerden L J M and Berdowski J J M 1992 Estimation of SO2 effect thresthold for heathland species. Funct. Ecol. 6, 291–296.
Eamus D and Jarvis P G 1989 Direct effects of CO2 increase on trees and forests (natural and commercial) in the UK. Adv. Ecol. Res. 19, 2–55.
Fangmeier A, Hadwiger-Fangmeier A, Van der Eerden L and Jäger H-J 1994 Effects of atmospheric ammonia on vegetation — A review. Environ. Pollut. 86, 43–82.CrossRefPubMed
Gregorius H-R 1989 The importance of genetic multiplicity for tolerance of atmospheric pollution. In Genetic Effects of Air Pollutants in Forest Tree Populations. Eds. F Scholz, H-R Gregorius and D Rudin. pp 163–172. Springer-Verlag, Berlin, Germany.
Gorissen A, Joosten N N and Jansen A E 1991 Effects of ozone and ammonium sulphate on carbon partitioning to mycorrhizal roots of Juvenile Douglas fir. New Phytol. 119, 243–250.
Gorissen A, Jansen A E and Olsthoorn A F M 1993 Effects of a two-year application of ammonium sulphate on growth, nutrient uptake, ad rhizosphere microflora of juvenile Douglasp-fir. Plant and Soil 157, 41–50.
Grundmann G L, Lensi R and Chalamet A 1993 Delayed NH3 and N2O uptake by maize leaves. New Phytol. 124, 259–263.
Jarvis P G 1989 Atmospheric carbon dioxide and forests. Phil. Trans. R. Soc. London B 324, 369–392.
Jager H-J 1982 Ciochemical indication of effect of air pollution on plant In Monitoring of Air Pollutants by Plants. Eds. L Steubing and H-J Jäger. pp 99–107. Dr W Junk Publidhers, The Hauge, The Netherlands.
Jones C G, Coleman J S and Findlay S 1994 Effects of ozone on interactions between plants, consumers and decomposers. In Plant Responses to the Gaseous Environment. Eds. R G Alscher and A R Wellburn. pp 339–363. Chapman and Hall, London, UK.
Lea P J, Blackwell R D and Joy K W 1992 Ammonia assimilation in higher plants. In Nitrogen Metabolism of Plats. Eds. K Mengel and D J Pilbeam. pp 153–186. Clarendom Press, Oxford Science Publications, Oxford, UK.
Lefohn A S 1992 Surface Level Ozone Exposures and their Effects on Vegetation. Lewis Publishers, Inc., Chelsea, USA.
Marschner H and Dell B 1994 Nutrient uptake in mycorrhizal sumbiosis. Plant and Soil. 159, 89–102.
Meier S, Grand L F, Schoeneberger M M, Reinert R A and Bruck R I 1990 Growth, ectomycorrhizae and nonstructural carbohydrates of Loblolly pine seedlings exposed to ozone and soil water deficit. Environ. Pollut. 64, 11–27.CrossRefPubMed
Mooi J and Jolink H H W 1989 Computer controlled plant growth cabinets for fumigation experiments. In Proceedings of the International Symposium on Environmental Research with Plants in Closed Chambers. pp 43–51. München-Neuherberg, Germany, October 1989.
Norby R J, O'Neill E G, Hood W G and Luxmoore R J 1987 Carbon allocation, root exudation and mycorrhizal colonization of Pinus echinata
seedlings grown under CO2
enrichment. Tree Physiol. 3, 203–210.PubMed
Norby R J, Gunderson C A, Wullschleger S D, O'Neill E G and McCracken M K 1992 Productivity and compensatory responses of yellow-poplar trees in elevated CO2
. Nature 357, 322–324.CrossRef
O'Neill E G, Luxmoore R J and Norby R J 1987 Increases in mycorrhiral colonization and seedling growth in Pinus echinata and Quercus alba in an enriched CO2 atmosphere. Can. J. For. Res. 17, 878–883.
Pérez-Soba M, Stulen I and Van der Eerden L J M 1994a Effect of atmospheric ammonia on the nitrogen metabolism of Scots pine (Pinus sylvestris
) needles. Physiol. Plant. 90, 629–636.CrossRef
Pérez-Soba M, Van der Eerden L J M and Stulen I 1994b Combined effects of gaseous ammonia and sulphur dioxide on the nitrogen metabolism of the needles of Scot pine trees. Plant Physiol. Biochem. 32, 539–546.
Pérez-Soba M, Van der Eerden L J M, Stulen J and Kuiper P J C 1994c Gaseous ammonia counteracts the response of Scots pine needles to elevated atmospheric carbon dioxide. New Phytol. 128, 307–313.
Petterson R, McDonald A J S and Stadenberg I 1993 Response of small birch plants (Betula pendula Roth.) to elevated CO2 and nitrogen supply. Plant Cell Environ. 16, 1115–1121.
Reich P B, Schoettle A W, Stroo H F and Amundson R G 1986 Acid rain and ozone influence mycorrhizal infection in tree seedlings. J. Air Pollut. Control Assoc. 36, 724–726.
Robinson S A, Slade A P, Fox G G, Phillips R, Ratcliffe R G and Stewart G R 1991 The role of glutamate dehydrogenase in plant nitrogen metabolism. Plant Physiol. 95, 509–516.
Rogers H H, Runion G B and Krupa S V 1994 Plant responses to atmospheric CO2
enrichment with emphasis on roots and the rhizosphere. Environ. Pollut. 83, 155–189.CrossRefPubMed
Rowland-Bamford A J, Baker J T, Allen L HJr and Bowes G 1991 Acclimation of rice to changing atmospheric carbon dioxide concentration. Plant Cell Environ. 14, 577–583.
Runiom G B, Curl E A, Rogers H H, Backman P A, Rofriguez-Kábana P and Helms B E 1994 Effects of free-air CO2
enrichment on microbial populations in the rhizosphere and phyllosphere of cotton. Agric. For. Meteorol. 70, 117–130.CrossRef
Saterson K A and Vitousek P M 1984 Fine root biomass and nutrient cycling in Aristida stricta in a North Carolina coastal plain savanna. Can. J. Bot. 62, 823–829.
Sokal R R and Rohlf F J 1981 Biometry. Freeman W H And Co., New York, USA.
Stulen I and Den Hertog J 1993 Root growth and functioning under atmospheric CO2 enrichment. Vegetatio 104/105, 99–115.
Termorshuizen A J and Schaffers A P 1991 The decline of carpophores of ectomycorrhizal fungi in stands of P. sylvestris in The Netherlands: possible causes. Nova Hedwigia 53, 267–289.
Tingey D T, Wilhour R G and Standley C 1976 The effect of chronic ozone exposures on the metabolite content of ponderosa pine seedlings. For. Sci. 22, 234–241
Tissue D T, Thomas R B and Strain B R 1993 Long-term effects of elevated CO2 and nutrients on photosynthesis and rubisco in loblolly pine seedlings. Plant Cell Environ. 16, 859–865.
Tolley L C and Strain B R 1985 Effects of CO2 enrichment and water stress on gas exchanges of Liquidambar stryraciflua and Pinus taeda seedlings grown under different irrdiance levels. Oecologia 65, 166–172.
Tonneijck A E G 1989 Evaluation of ozone effects on vegetation in The Netherlands. In Atmospheric Ozone Research and its Policy Implications Ed. T Schneiger. pp 251–260. Elsevier Science Publishers B.V., Amsterdam, The Netherlands.
Turner N C, Rich S and Waggoner P E 1973 Remove of ozome by soil. J. Environ. Qual. 2, 259.
Van Dijk H F G and Roelofs J G M 1988 Effects of excessive ammonium deposition on the nutritional status and condition of pine needles. Physiol. Plant. 73, 494–501.
Van Dijk H F G, De Louw M H J, Roelofs J G M and Verburgh J J 1990 Impat of artificial, ammonium-enriched rainwater on soils and young coniferous trees in a greenhouse. Part II — effects on the trees. Environ. Pollut. 63, 41–59.CrossRefPubMed
Van der Eerden L J M and Pérez-Soba M 1992 Physiological responses of Pinus sulvestris
to atmospheric ammonia. Trees 6, 48–53.CrossRef
Van der Eerden L J, Lekkerkerk L J, Smeulders S M and Jansen A E 1992 Effects of atmospheric ammonia and ammonium sulphate onDouglas fir (Pseudotsuga menziesii
). Environ. Pollut. 76, 1–9.CrossRefPubMed
Van der Eerden L., Tonneijck A, Jorsz W, Besterbroer S and Dueck T 1993 Influence of nitrogenous air pollutants on carbon dioxide and oxone effects vegetation. In NATO ASI Series, Vol I 16. Interacting Stresses on Plants in a Changing Climate Eds. M B Jackson and C R Black. pp125–137. Springer Verlag, Berlin Germany.
Van Hove L W A, Bossen M E, Mensink M G J and Van Kooten O 1992 Physiological effects of a long term exposure to low concentrations of NH3
on Douglas fir (Pseudotsuga menziesii
). Physiol. Plant. 86, 559–567.CrossRef
Van Hove L W A and Bossen M E 1994 The physiological effects of a five months exposure to low concentrations of O3
on Douglas fir (Pseudotsuga menziesii
). Physiol. Plant. 92, 140–148.CrossRef
Wolfenden J and Mansfield T A 1991 Physiological disturbances in plants caused by air pollutants. Proc. R. Soc. Edinburgh 97 B, 117–138.