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Optimal exploitation strategies for an animal population in a stochastic serially correlated environment

Optimal exploitation strategies were studied for an animal population in a stochastic, serially correlated environment. This is a general case and encompasses a number of important cases as simplifications. Data on the mallard (Anas platyrhynchos) were used to explore the exploitation strategies and test several hypotheses because relatively much is known concerning the life history and general
Authors
D.R. Anderson

Summary appraisals of the nation's ground-water resources – Ohio region

Ground water in the Ohio Region is a large, important, and manageable resource that should have a significant role in regional water development. On the basis of a comparison of ground-water withdrawals with estimated ground-water recharge, it appears that the ground-water resources of the Ohio Region probably will not be used at full potential under existing development plans. Annual ground-water
Authors
Richard M. Bloyd

Population ecology of the mallard: III. Bibliography of published research and management findings

No abstract available. 
Authors
David R. Anderson, Patricia Ann Skaptason, Kathleen C. Fahey, Charles J. Henny

Hydrology of the abandoned coal mines in the Wyoming Valley, Pennsylvania

Mine-water discharge, into the Susquehanna River degrades the river's quality during periods of low flow to a point critical for subsistence of aquatic life. To determine what measures are required to provide a better quality mine-water discharge in the Wyoming Valley, mine hydrology and mine-water quality are related to mine-pool management. The addition of mine-pool outlets at several locations
Authors
Jerrald R. Hollowell

Porosity, density, grain density, and related physical properties of sediments from the Red Sea drill cores

Representative sediments from each site were chosen for examination of their dry specific gravity and grain density. The determinations were made by micropycnometer; water was used as the displacing medium, and salt corrections were based on the refractive index measurements on interstitial water. For saltier brines the "salinities" derived from index of refraction are somewhat too low but, for th
Authors
Frank T. Manheim, Linda Dwight, Rebecca A. Belastock

Interstitial water studies on small core samples, leg 19

The sediments cored on Leg 19 consist primarily of diatomaceous oozes with variable proportions of volcanic material and terrigenous clays and silts. With a few exceptions, deposition rates are high at these sites, usually exceeding 5cm/103y. The interstitial solutions sampled exhibit compositional changes which previously have been found to characterize rapidly deposited terrigenous sediments. So
Authors
F.L. Sayles, L.S. Waterman, Frank T. Manheim

Interstitial water studies on small core samples, legs 16, 17, and 18

Legs 16, 17, and 18 encountered three groups of sediment types: rapidly deposited biogenic deposits, showing marked changes in interstitial calcium, magnesium, and strontium; slowly deposited biogenic deposits, showing little variability in pore fluids other than elevated silica concentrations; and terrigenous deposits. The latter showed the usual loss of sulfate and combination of diagenetic reac
Authors
L.S. Waterman, F.L. Sayles, Frank T. Manheim

Mercury, lead, cadmium, and arsenic residues in starlings--1971

No abstract available.
Authors
William E. Martin, Paul R. Nickerson