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184800 results.

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Page 4461, results 111501 - 111525

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Landscape ecology: a concept for protecting park resources
Craig D. Allen, John Lissoway, Keith Yarborough
1990, Park Science (10) 7-8
The Southwest Region has been supporting Resource Basic Inventory (RBI) efforts to establish baseline data for comparisons with long-term monitoring results to be conducted in the future. This “pulse taking” is a part of the Servicewide initiative being fostered so that resource managers, scientists, and park managers will be able...
Middle Jurassic syntectonic conglomerate in the Mt. Tallac roof pendant, northern Sierra Nevada, California
G. Reid Fisher
David S. Harwood, M. Meghan Miller, editor(s)
1990, Book chapter, Paleozoic and early Mesozoic paleogeographic relations; Sierra Nevada, Klamath Mountains, and related terranes
Middle Jurassic marine conglomeratic and debris-flow deposits in the Mt. Tallac roof pendant are interpreted to be syntectonic fault trough deposits. Similar deposits in similar stratigraphic successions throughout the northern Sierra Nevada demonstrate that the Middle Jurassic continental-margin arc north of latitude 39° was essentially marine, and possibly extensional or...
Hydrogeochemistry of rivers and lakes
John David Hem, Adrian Demayo, Richard A. Smith
R.G. Wolman, H. C. Riggs, editor(s)
1990, Book chapter, Surface water hydrology of North America
This chapter has three principal objectives: (1) to summarize the present chemical composition of North American surface waters and point out any discernible trends with time; (2) to review chemical and biochemical principles and processes that control natural water composition, and the ways in which these may be involved in...
Tuberculosis in wild birds: implications for captive birds
K. A. Converse, F. J. Dein
1990, Book, Proceedings of the American Association of Zoo Veterinarians
The geographic distribution of avian tuberculosis is widespread but the lack of visible epizootics makes assessment of its impact on wild birds difficult. Generally a low prevalence, widely-scattered, individual animal disease, avian tuberculosis is caused by the same agent in wild and domestic birds. Thus there exists the potential for...
Origin of solutes in saline lakes and springs on the Southern High Plains of Texas and New Mexico
W. Wood, B.F. Jones
Thomas C. Gustavson, editor(s)
1990, Book chapter, Geologic framework and regional hydrology: Upper Cenozoic Blackwater Draw and Ogallala Formations, Great Plains
Analysis of hydraulic heads, calculation of pore volume flushing, and analysis of solute and isotopic chemistry strongly suggest that the solutes originate from the concentration by evaporation of runoff and potable shallow ground water that discharges from the High Plains aquifer. Chloride/bromide solute ratios, which are thought to be unaffected...