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: 41763
Fish farmers confronted by chemical registration problem
Abstract has not been submitted
Authors
R.E. Lennon
Chemicals - their effectiveness in fisheries and the problem of their clearance for popular use
Abstract has not been submitted
Authors
R.E. Lennon
A device for monitoring radio-marked animals
A simple, portable, and economical recording system consisting of a receiver, signal conditioner, recorder, and power source is described. The system was designed to monitor the signal strength from a radio-marked animal at a particular location. Information is stored on recorder chart paper. Radio-marked ducks have been successfully monitored at nest sites, potholes, and other locations.
Authors
D.S. Gilmer, V.B. Kuechle, I.J. Ball
Waterfowl nesting on interstate highway right-of-way in North Dakota
We studied 630 acres of roadside along 23 miles of Interstate 94 in Stutsman County, North Dakota, to assess wildlife values of highway rights-of-way. We found 422 duck nests that had an overall success of 57 percent in 1968, 1969, and 1970. Mammalian predators were responsible for 85 percent of the destroyed nests. To test the effect of mowing on duck nest initiation and success, alternate 1-mile
Authors
R.B. Oetting, J.F. Cassel
Use of stock ponds by breeding waterfowl and other water birds in Stanley County, South Dakota
Abstract has not been submitted
Authors
J. T. Lokemoen
Birds observed in North Dakota during the winter of 1970-71
Abstract has not been submitted
Authors
J. T. Lokemoen, P. F. Springer
Selective food preferences of walleyes of the 1959 year class in Lake Erie
Stomachs were examined from 1,473 walleyes (Stizostedion vitreum vitreum) of the 1959 year class collected in western Lake Erie from June 1959 to October 1960. In the same period, the relative abundance and lengths of potential forage species were determined from trawl catches. The walleye fed almost entirely on fish. In 1959 the food was dominated first (in June and July) by yellow perch (Perca f
Authors
John W. Parsons
A basket for washing benthological samples
Since benthological samples collected with dredges are usually too large to be preserved in toto, a washing method must be employed to reduce the sample volume without losing or damaging the organisms. Traditionally, the sample is washed in a sieve until the volume is small enough for convenient handling or preservation. Most washing procedures are time-consuming and laborious. To save time in w
Authors
James H. Selgeby