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: 41764
Residues of 2,4-D in pond water, mud, and fish, 1971
Abstract has not been submitted
Authors
D.P. Schultz, P.D. Harman
Effects of TFM and Bayer 73 on in vivo oxygen consumption of the aquatic midge Chironomus tentans
Exposure of fourth instar larvae of Chironomus tentans to 2.0-8.0 mg/liter of TFM (3-trifluormethyl-4-nitrophenol) for 6 hr at 22 A? 0.5 C in soft water resulted in a significantly increased rate of larval oxygen consumption compared to that of control larvae, as measured with the Warburg respirometer. Maximum stimulation of oxygen consumption occurred with 8.0 mg/liter of TFM, and 1.0 mg/liter of
Authors
J.A. Kawatski, V. K. Dawson, J.L. Reuvers
A culture method for sea lamprey larvae
Abstract has not been submitted
Authors
L.H. Hanson, E.L. King, J.H. Howell, A. J. Smith
An improved chemical delivery apparatus for use in intermittent-flow bioassays
No abstract available.
Authors
J.H. Chandler, H.O. Sanders, D.F. Walsh
Urinary excretion of quinaldine by channel catfish
Abstract has not been submitted
Authors
Joseph B. Hunn, John L. Allen
Habitat management considerations for prairie chickens
Lack of nesting and brood rearing habitat appears to be the universal limiting factor for prairie chickens (Tympanuchus cupido pinnatus) throughout their range. Grasslands are essential to prairie chickens, but vary widely in quality and thus in their ability to support prairie chickens. High-quality habitat is grassland providing residual vegetation averaging about 20 inches in height in spring a
Authors
L.M. Kirsch
Effects of radio packages on wild ducks
A total of 211 wild, free-flying mallards (Anas platyrhynchos) and wood ducks (Aix sponsa) were equipped with breast-mounted radio packages during the breeding seasons of 1968-72. Known predation loss was 7.6 and 12.0 percent for mallards and wood ducks respectively, 60 percent occurred within 3 weeks of instrumentation. The highest predation rate for mallards was 0.0048 kills per tracking day and
Authors
D.S. Gilmer, I. J. Ball, L.M. Cowardin, J. H. Riechmann
Remote sensing for identification and classification of wetland vegetation
Multispectral photography and ground truth were obtained on an area 12 miles (19.3 km) east of Bemidji, Minnesota, to identify and map wetlands less than 2 acres (0.8 hectare) in size, to map emergent vegetation in lakes, and to explore the feasibility of classifying vegetation from aerial photographs. Wetlands less than 2 acres in size were identified on photography taken in May 1971, and emergen
Authors
L.M. Cowardin, V.I. Myers
Breeding of the black guillemot in northern Alaska
No abstract available.
Authors
G.J. Divoky, G.E. Watson, J. C. Bartonek
Avian mortality from collisions with overhead wires in North Dakota
Abstract has not been submitted
Authors
G.L. Krapu