By Gene E. Likens, F. Herbert Bormann (auth.), Gene E. Likens (eds.)
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Additional info for An Ecosystem Approach to Aquatic Ecology: Mirror Lake and Its Environment
B-12). 1. 8. B-21). This regulation of terrestrial outbeen a significant decrease in concentrations of puts for aquatic ecosystems is obviously an imCa2 +, Mg2+, K+, NH4 + and S042 - during this portant one. B-8 and 9). B-7). Ecologically, that acids in precipitation provide 50 to 52% of this finding is significant because summer is the the protons for the weathering reactions in the more active growing season for organisms in soil zone (Likens et al. 1977; Driscoll and both aquatic and terrestrial ecosystems.
In hole K, only the upper 12 m of the bedrock consist of schist. In the remaining 18 m ofthe hole, black, gray and greenish-black slate that is part of the Littleton Formation is intruded by quartz-monzonite sheets. Bedrock in hole Kh-L consists mostly of schist that is intruded by several sheets of quartz monzonite. Hole FS penetrates mostly schist, but an 8-m thick section of greenish-gray slate occurs approximately 26 m below the bedrock surface. Four sheets of quartz monzonite, each less than 2 m thick, occur in the hole.
O~------------------------------------- Figure II~B-ll. Average monthly volume-weighted concentrations (mg/liter) and amount of streamflow in Watershed 6 during 1963 to 1980. The vertical bars are ± one standard deviation of the mean. B-U. Average monthly vol- ume-weighted· concentrations (mg/liter) and amount of streamflow in Watershed 6 during 1964 to 1980. The average H-ion concentrations are for 1965 to 1980. The vertical bars are ± one standard deviation of the mean. 0 0 Streamflow 20 E u 10 0 A SON 0 F M A M Month cause for the hump (1968-69 to 1973-74) in the otherwise rather consistent pattern during the period of our measurements.