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Short rotation forests, consisting of various willows (Salix spp.), are suitable vegetation filters with regard to removal of nutrients from municipal sewage sludge, wastewater, leakage water and bioash (wood ash). As long as contents of heavy metals and known organic compounds are kept below accepted limit values, such waste oducts can be regarded as valuable nutrient resources, Kurth L. Perttu is Associate Professor,

The Supreme Court decision of July 1989 upholding state regulation of abortion has led to numerous attempts to impose parental consent and/or parental notification legislation for females under the age of 18 seeking abortions. The effect of such legislation on teen pregnancy outcomes is hotly debated. Missouri vital statistics data from 1980 through 1992 are examined for the effect of such a law on pregnancy resolution choices among teens. The Missouri data suggest that since the enforcement of the parental consent statute in 1985 there has been a decrease in the selection of abortion as a pregnancy outcome, particularly among white teens. In addition there has been an increase in the percent of abortions among teens taking place in other states and an irregular but steady trend toward later abortions. The increasing number of births to unmarried mothers under the age of 18 suggest the need for specific services to help these young mothers cope.