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
The whistling swan in the west with particular reference to Great Salt Lake Valley, Utah
No abstract available.
Authors
G.A. Sherwood
Seasonal abundance and vertical movements of planktonic crustacea in Lake Michigan
U. S. Fish and Wildlife Service Fishery Bulletin no. 172
Authors
LaRue Wells
Colorimetric determination of halogenated nitrophenols added to streams as sea lamprey larvicides
No abstract available.
Authors
Manning A. Smith, Vernon C. Applegate, B. G. H. Johnson
The bottom fauna of Lake Huron
The examination of 63 bottom samples, collected in Lake Huron in 1952 and 1956, revealed that Pontoporeia affinis was the dominant organism in both deep and shallow water. The next most abundant organisms in deep water were oligochaetes, fingernail clams, and midge larvae. Midge larvae were more numerous than either oligochaetes or fingernail clams in shallow water. The nmnber of organisms per squ
Authors
Howard D. Teter
Lake Erie walleyes--again on the upswing?
SUMMARY The effect of DDT dust on wildlife was studied at Camp Bullis, Bexar County, Texas, in the summer of 1947. Studies were made on a 206.6 acre plot that was treated with DDT for experimental control of the Lone Star tick (Amblyomrna americanum). A dust consisting of one part of DDT to nine parts of pyrophyllite was applied at an average rate of 4.4 pounds of DDT per acre. The limits
Authors
Charles P. Seldon, Harry D. Van Meter
First-year growth of the walleye, Stizostedion vitreum vitreum (Mitchill), and associated factors in the Red Lakes, Minnesota
First-year growth of the walleye, Stizostedion vitreum vitreum (Mitchill), was studied from 4,544 fish collected during the first summer of life in the Red Lakes in six seasons and from back calculations on 4,474 fish one year or more in age representing 17 year classes. Sexes did not differ in growth rate. Growth within the season varied greatly in different years and total growth deviated as muc
Authors
Lloyd L. Smith, Richard L. Pycha
The American Fisheries Society
In the course of studies designed to determine the calcium and phosphorus requirements of breeding bobwhite quail, it was found that best results were obtained when the Ca/P ratio in the diet was approximately 2.3:1. Variations in the Ca/P ratio produced significant differences in results when the level of phosphorus in the diet was 0.75%, but the differences were less marked when the level of ph
Authors
James W. Moffett
Attack on the sea lamprey: a report of progress
Abstract has not been submitted
Authors
James W. Moffett
Age and growth of the whitefish Coregonus clupeaformis, of Munising Bay, Lake Superior
This study is based on a sample of 415 whitefish collected in 1953 from an unexploited population in Munising Bay, Lake Superior. Gill-net and trawl catches had different length-frequency distributions and age compositions, but estimates of growth from the two catches were very similar. The body-scale relation is a straight line with an intercept of 1.5 inches. Weight of Munising Bay whitefish
Authors
Thomas A. Edsall
The vertical migration of Mysis relicta in Lakes Huron and Michigan
During the day Mysis relicta could be taken only near the bottom of Lakes Huron and Michigan. In the evening they migrated into the overlying strata as the surface light intensity decreased from 15 to 1 foot-candles. Frequently the mysids migrated through the metalimnion when first ascending, but later in the night the majority occurred in or immediately below this layer. As the length of day decr
Authors
Alfred M. Beeton