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: 41772
Breeding bird populations of selected grasslands in east central North Dakota -- 1977 - Kentucky blue grass prairie and mixed prairie I-V, VIII
Abstract has not been submitted
Authors
D. H. Johnson
Movements of walleyes tagged in eastern Lake Erie
In May, October and November of 1968, 2,456 walleyes of various ages were captured, tagged and released in eastern Lake Erie to determine seasonal movement of walleyes in that basin and the degree to which they intermingled with fish of the central and western basins. From 1968 to 1971, 275 of the tagged fish were recovered. Walleyes tagged in the spring on spawning grounds near Barcelona (N.Y.) m
Authors
David R. Wolfert, Harry D. Van Meter
Age, growth, and food of northern pike in eastern Lake Ontario
Northern pike (Esox lucius) from eastern Lake Ontario were sampled with gill nets and trap nets in 1972-1973. Fish of age-groups IV, V, and VI were predominant in the catch. Although males were slightly longer after the 1st yr of life, females gained a 25-mm advantage in the 2nd yr and a 30-mm advantage in the 3rd yr. In later years, the increments of growth of males and females were similar. All
Authors
David R. Wolfert, Terence J. Miller
Predation by rainbow smelt (Osmerus mordax) on lake herring (Coregonus artedii) in western Lake Superior
The stock of lake herring (Coregonus artedii) in the Apostle Islands (Wisconsin) region of western Lake Superior has diminished severely during the past 30 yr, and predation by rainbow smelt (Osmerus mordax) on herring larvae has been considered a possible cause of this decline. In contrast, the herring stock in Black Bay, 160 km to the northeast, has remained nearly stable despite the presence of
Authors
James H. Selgeby, Wayne R. MacCallum, Donald V. Swedberg
Fecundity of the bloater (Coregonus hoyi) in Lake Michigan
Using ovaries sampled seasonally from Lake Michigan bloaters in 1968-1969, we determined that one complement or modal group of eggs is produced each year and spawned mainly during January, February, and March. Fecundities estimated for 65 fish taken in October ranged from 3,230 eggs in one medium-size bloater (241 mm long) to 18,768 in the longest (305 mm). We regressed these estimates on lengths
Authors
Lee Emery, Edward H. Brown
Proceedings of a workshop on techniques of rehabilitation and erosion control in recently roaded and logged watersheds, with emphasis to north coastal California. March 13-14, 1978
No abstract available at this time
Authors
Mary Ann Madej, H.M. Kelsey
Albumin polymorphism in the feral asses of Death Valley National Monument, California
No abstract available at this time
Authors
J.G. Blake, C. L. Douglas
Radio-telemeteric studies of movements in desert bighorn sheep, Joshua Tree National Monument
No abstract available at this time
Authors
C. L. Douglas, L. White
Use of Landsat data to assess waterfowl habitat quality
No abstract available at this time
Authors
J. Colwell, D.S. Gilmer, E.A. Work, D.L. Rebel, N.E.G. Roller
The status of the flat-tailed horned lizard, (Phrynosoma mcallii), at nine sites in Imperial and Riverside counties, California
No abstract available at this time
Authors
F.B. Turner, P.A. Medica, H.O. Hill