By H. C. Martin (auth.), Hans C. Martin (eds.)

Since the start of the 1980's, study has persisted to elucidate and enhance our knowing of the problern of the ecological effect of acidic precipitation. From September 15-20, 1985, Canada convened the the Muskoka Symposium on Acidic Precipitation to study development and support chart the path of destiny reports. The convention was once held in significant Ontario, Canada, a zone of heavy sulphate deposition the place aquatic results are obtrusive. nearly seven hundred humans attended, over 500 of whom have been study scientists. Over four hundred papers have been offered. approximately two hundred of the papers are integrated in those court cases, which tagether provide the current cutting-edge of acid rain learn. The convention serious about atmospheric technology and aquatic and terrestrial results. i've got made a few normal observations on growth in clarifying concerns and linkages among those parts of study. Out­ status matters which require greatly extra paintings are pointed out. those are my perspectives, prompted by means of own bias and restricted by way of my services. Atmospheric Seiences 3 features have been coated: size recommendations, the particular degree­ ments, and source-receptor relationships.

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Additional info for Acidic Precipitation: Proceedings of the International Symposium on Acidic Precipitation Muskoka, Ontario, September 15–20, 1985

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Of an Int. Conf. Sandefjord, Norway, March 11-14, 1980, 188-89. SNSF-project, As, Norway. : 1980, 'Ten years acidification of Swedish forest soils'. In: Drabl6s, D. and Tollan, A. Ecological impact of acid precipitation. Proc. of an Int. Conf. Sandefjord, Norway, March 11-14, 1980, 188-89. SNSF-project, As, Norway. : 1985, Air pollution and forest damage in Norway. Paper presented at the NATO-workshop in Toronto, Ontario, Canada. May 1985. , Folkeson, L. : 1985, Soil acidification and metal solubility in forests of south Sweden.

Needle loss is a non-specific signal not reacting to air pollution alone. Direct effects of gases such as S02 are not likely to occur, but high episodic levels of 03 have been measured at a level possibly leading to chronic injuries. Increasing soil acidity is reported from forests in Slv Sweden and also from an alpine locality in southern Norway. A differentiation of biological and deposition-dependent acidification has been attempted. A soil acidification of up to 1 pH unit has occurred in both humus and mineral soil layers.

B. : 1985, Atmospheric Environment, 1~' 335. O. Box 7072 Swedish University of Agricultural Sciences S-750 07 UPPSALA, Sweden ABSTRACT. Air pollution effects on the forest of Nordic Europe are analyzed with respect to the situation before and after 1980. No adverse effects were reported up to 1980. Inventories of forest vitality in terms of needle loss or crown density as well as tree growth have been made in parts of Norway and the whole of Sweden. For Norway spruce, needle loss was found to increase with tree age and climatic stress with increasing latitude and altitude.

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