Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41771
Effects of monocrotophos and fenthion on discrimination acquisition and reversal in northern bobwhite (Colinus virginianus)
Adult male northern bobwhite (Colinus virginianus) were fed diets containing organophosphorus pesticides, and the birds' discrimination acquisition and reversal performance was evaluated. The birds received the pesticide-laced diets continually, beginning 2 d before behavioral testing and ending after the birds completed the test series consisting of an acquisition and 10 reversals. Bobwhites fed
Authors
C.S. Robbins
[Book review] Helping and communal breeding in birds: ecology and evolution by Jerram L. Brown
No abstract available.
Authors
C.S. Robbins
The toxicity of p,p'-DDT to the clapper rail
The LC50 (concentration of toxicant in the diet expected to kill half of the test birds in 5 days) for p,p' -DDT in clapper rails (Rallus longirostris) was found to be 1,612 ppm for males and 1,896 ppm for females. Amounts of DDT + DDD in the brains of birds that died were significantly greater (P < 0.01) than those in the brains of survivors. Thirty ppm DDT + DDD approximated the lower limit of
Authors
A. Van Velzen, J.F. Kreitzer
Effects of environmental pollutants on Connecticut and Maryland ospreys
Osprey (Pandion haliaetus) eggs were exchanged between Connecticut and Maryland osprey nests in 1968 and 1969 to test the hypothesis that the decline in reproductive success of Connecticut ospreys was caused by something within the external environment of the eggs. Incubation of 30 Connecticut osprey eggs by Maryland ospreys did not improve the hatching rate. Forty-five Maryland osprey eggs incu
Authors
Stanley N. Wiemeyer, P.R. Spitzer, W.C. Krantz, T. G. Lamont, E. Cromartie
California condor plumage and molt as field study aids
An analysis is made of the reliability of plumage and molt characteristics of the California condor for estimating age and identifying individual birds. Neither character seems sufficiently reliable to use in more than a general way.
Authors
S.R. Wilbur
[Book review] Birds and Marshes of the Chesapeake Bay Country, by B. Meanley
No abstract available.
Authors
M. C. Perry
[Book review] The View from Hawk Mountain, by Michael Harwood
No abstract available.
Authors
C.S. Robbins