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Book Chapters

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.

Filter Total Items: 6158

Discrepancies between ages determined from scales and otoliths for alewives from the Great Lakes Discrepancies between ages determined from scales and otoliths for alewives from the Great Lakes

Discrepancies between ages determined from otoliths and those determined from scales were common and, sometimes, quite large in alewives Alosa pseudoharengus collected in fall 1983 from Lakes Ontario, Huron, and Michigan. Among fish with 'otolith ages' of 4 or more, the percentages having identical 'scale ages' were 1% in Lake Ontario, 35% in Lake Huron, and 56% in Lake Michigan. Among...
Authors
Robert O’Gorman, D. Hugh Barwick, Charles A. Bowen

Distribution and effects of acidic deposition on wildlife and ecosystems Distribution and effects of acidic deposition on wildlife and ecosystems

Acidic deposition occurs over most of the United States and the deposition patterns and theoretical vulnerabilities of aquatic ecosystems to chemical changes can be delineated, but few data exist on concomitant biological effects. Hypothetical direct effects are limited primarily to toxicity of various heavy metals mobilized at reduced pH. Results of studies in Scandinavia suggest that...
Authors
K. L. Stromborg, J. R. Longcore

Eagles Eagles

No abstract available at this time
Authors
J. A. Howell

Endangered Species Endangered Species

No abstract available at this time
Authors
J. A. Howell

Evolution of fluvial styles in the Eocene Wasatch Formation, Powder River Basin, Wyoming Evolution of fluvial styles in the Eocene Wasatch Formation, Powder River Basin, Wyoming

Vertical and lateral facies changes in the lower part of the Eocene Wasatch Formation in the Powder River Basin, Wyoming represent an evolution of fluvial systems that varied from meandering to anastomosing. The meandering facies in the lower part of the study interval formed in a series of broad meanderbelts in a northnorthwestflowing system. Upon abandonment this meanderbelt facies...
Authors
Peter D. Warwick, Romeo M. Flores
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