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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
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Monitoring of in-river migration of smolts from two groups of spring Chinook salmon (Oncorhynchus tshawytscha) with different profiles of Renibacterium salmoninarum infection Monitoring of in-river migration of smolts from two groups of spring Chinook salmon (Oncorhynchus tshawytscha) with different profiles of Renibacterium salmoninarum infection
No abstract available.
Authors
R.J. Pascho, D.G. Elliott, S. Achord
Natural population regulation and management of Ixodes dammini Natural population regulation and management of Ixodes dammini
No abstract available.
Authors
H. S. Ginsberg
Nomenclatural changes and additions Nomenclatural changes and additions
Abstract not supplied at this time
Authors
Eugenia B. Bohlke, W. F. Smith-Vaniz
Nonspecific defence mechanisms assay in fish I; Phagocytic index, adherence and phagocytic ability of neutrophils (NBT test) and myeloperoxidase activity test Nonspecific defence mechanisms assay in fish I; Phagocytic index, adherence and phagocytic ability of neutrophils (NBT test) and myeloperoxidase activity test
No abstract available at this time
Authors
A.K. Siwicki, D. P. Anderson, J. Antychowicz
Nonspecific defence mechanisms assay in fish II; Potential killing activity of neutrophils and manocytes, lysozyme activity in serum and organs and total immunoglobulin (Ig) level in serum Nonspecific defence mechanisms assay in fish II; Potential killing activity of neutrophils and manocytes, lysozyme activity in serum and organs and total immunoglobulin (Ig) level in serum
No abstract available at this time
Authors
A.K. Siwicki, D. P. Anderson
Overview of national bird population monitoring programs and databases Overview of national bird population monitoring programs and databases
A number of programs have been set up to monitor populations of nongame migratory birds. We review these programs and their purposes and provide information on obtaining data or results from these programs. In addition, we review recommendations for improving these programs.
Authors
G.S. Butcher, B. Peterjohn, C.J. Ralph
Paleogeographic implications of molluscan assemblages in the Upper Cretaceous (Campanian) Pigeon Point Formation, California Paleogeographic implications of molluscan assemblages in the Upper Cretaceous (Campanian) Pigeon Point Formation, California
The Pigeon Point Formation crops out along the San Mateo County coastline in a northern and southern sequence of folded and faulted strata. Correlation of the two sequences remains somewhat equivocal, although on the basis of biostratigraphy and a reversed magnetic interval both appear to have been deposited during the early to middle Campanian. Sedimentary structures suggest that the...
Authors
William P. Elder, LouElla Saul
Passive hemolytic plaque assay for detecting antibody-producing cells in fish Passive hemolytic plaque assay for detecting antibody-producing cells in fish
No abstract available at this time
Authors
D. P. Anderson