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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: 6164

Cortisol measurements in fish Cortisol measurements in fish

No abstract available
Authors
Z. Janey, G. Jeney, A.G. Maule

Dispersion in tidally averaged transport equation Dispersion in tidally averaged transport equation

A general governing inter-tidal transport equation for conservative solutes has been derived without invoking the weakly nonlinear approximation. The governing inter-tidal transport equation is a convection-dispersion equation in which the convective velocity is a mean Lagrangian residual current, and the inter-tidal dispersion coefficient is defined by a dispersion patch. When the...
Authors
R. T. Cheng, V. Casulli

Duck virus enteritis Duck virus enteritis

No abstract available.
Authors
D. E. Docherty, J. C. Franson

Effects of extended photoperiod on sandhill crane reproduction Effects of extended photoperiod on sandhill crane reproduction

Photoperiod studies were conducted with greater sandhill cranes (Grus canadensis tabida) from 1969 to 1972 and from 1982 to 1987 at the Patuxent Wildlife Research Center, Maryland. When housed indoors and exposed to long photoperiods, males produced semen during winter. When exposed to artificially extended photoperiods during spring in outdoor pens, females apparently laid earlier in...
Authors
G.F. Gee, G.W. Pendleton
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