By Gene E. Likens, F. Herbert Bormann (auth.), Gene E. Likens (eds.)
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Extra resources for An Ecosystem Approach to Aquatic Ecology: Mirror Lake and Its Environment
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. B-14). Mass Output of Chemicals The geologic output (Chapter /) of dissolved chemicals for the HBEF is calculated by multiplying measured concentrations of each substance in stream water by the volume of streamflow.
WINTER Understanding the physiographic setting of a lake is basic to understanding the physical, chemical and biologic processes that act within that setting. For example, knowledge of the movement of water overland, in streams, and through the subsurface near a lake is of primary importance in understanding processes acting upon and within the lake. The two physiographic characteristics of the land that have a major part in controlling the movement of water are geology and topography. Surface runoff is dependent on infiltration, which is related to soil characteristics and parent rock, as well as on the slope of the land, development of drainage patterns and •'channel characteristics of streams.
Further, the water level in hole Kh-B is consis- A. Physiographic Setting and Geologic Origin of Mirror Lake 45 was set River. However, nothing was known of the type, texture or thickness of drift deposits in the area. Beginning in 1978, drilling and geophysical data as part of the Mirror Lake ecosystem studies resulted in considerable information on hydrogeologic characteristics of drift near the lake. tently above land surface, and water levels in all the bedrock wells fluctuate seasonally indicating dynamic ground-water movement through the bedrock at Mirror Lake.
An Ecosystem Approach to Aquatic Ecology: Mirror Lake and Its Environment by Gene E. Likens, F. Herbert Bormann (auth.), Gene E. Likens (eds.)