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: 41918
Seasonal population characteristics of the opossum shrimp, Mysis relicta, in southeastern Lake Michigan, 1970-71
This study of depth distribution, abundance, growth, reproduction and standing crop of the opossum shrimp, Mysis relicta, in southeastern Lake Michigan was based on monthly samples collected from August 1970 through July 1971 (except February and March). Population density was usually low at 10-20 fathoms, moderate at 25-30 fathoms and relatively high at 35 fathoms and deeper. Abundance was highes
Authors
James B. Reynolds, G.M. DeGraeve
Effects of dressing and cooking on DDT concentrations in certain fish from Lake Michigan
Concentrations of DDT residues were highest in parts of the body with the highest oil content in four species of fish from Lake Michigan: yellow perch (Perca flavescens), bloater (Coregonus hoyi), lake trout (Salvelinus namaycush), and coho salmon (Oncorhynchus kisutch). Dressing reduced the DDT residues and oil content by more than 90% in yellow perch but had little effect in the other three spec
Authors
Robert E. Reinert, Donald Stewart, Harry L. Seagran
Accumulation of dieldrin in an alga (Scenedesmus obliquus), Daphnia magna, and the guppy (Poecilia reticulata)
Scenedesmus obliquus, Daphnia magna, and Poecilia reticulata accumulated dieldrin directly from water; average concentration factors (concentration in organism, dry weight, divided by concentration in water) were 1282 for the alga, 13,954 for D. magna, and 49,307 (estimated) for the guppy. The amount accumulated by each species at equilibrium (after about 1.5, 3-4, and 18 days, respectively) was d
Authors
Robert E. Reinert
Downstream migration of recently transformed sea lampreys before and after treatment of a Lake Michigan tributary with a lampricide
After the Pere Marquette River was treated with a lampricide in May 1964, the number of recently transformed sea lampreys (Petromyzon marinus) collected in the water-intake structure of a chemical plant near the mouth of the stream dropped 99.5%, from 13,913 (average for 1962-63 and 1963-64) to 76 (average for the next four migration seasons). Average length of the lampreys caught increased marked
Authors
John W. Hodges
Limnology and fish ecology of sockeye salmon nursery lakes of the world
Many important, recently glaciated oligotrophic lakes that lie in coastal regions around the northern rim of the Pacific Ocean produce anadromous populations of sockeye salmon, Oncorhynchus nerka. This paper describes the limnology and fish ecology of two such lakes in British Columbia, five in Alaska, and one in Kamchatka. Then we discuss the following general topics: the biogenic eutrophication
Authors
Wilbur L. Hartman, R.L. Burgner
Fecundity of the sea lamprey (Petromyzon marinus) in Lake Superior
An infectious agent, which appears to be a virus (RJV) has been isolated from the liver of a wild raccoon which has led to a highly fatal type of disease characterized by conjunctivitis and an elevated serum bilirubin frequently accompanied by jaundice on inoculation of raccoons. Ferrets also appear to be susceptible to infections with this agent.
Authors
Patrick J. Manion
Feeding behavior of lake whitefish and lake herring in Torch Lake, Michigan
It is proposed that Haemoproteus nettionis (Johnston and Cleland, 1909) Coatney, 1936 be accepted as the correct name for the Haemoproteus of Anatidae. A list of synonyms and amended description of the parasite is given. Infections are reported from wood ducks (Aix sponsa) and from domestic ducks and geese, the last representing a new host record. Natural transmission was demonstrated at the Patux
Authors
Peter J. Colby, George N. Washburn
Population biology of alewives, Alosa pseudoharengus, in Lake Michigan, 1949-70
Alewives were unknown in Lake Michigan before 1949, but became extremely abundant in the 1960s and soon exceeded the carrying capacity of the lake. In 1967 they were decimated by a lakewide mass mortality, and have since been less abundant as 'adults' (a?Y 120 mm long), although numerous young were produced in 1969-70 and the adult population appeared to be gradually increasing. Alewives were stud
Authors
Edward H. Brown
Age, growth, reproduction, and food of the burbot, Lota lota (Linnaeus), in southwestern Lake Superior
This study was based on 1,285 burbot (Lota lota) collected in three areas in southwestern Lake Superior in 1966-69. Age was determined from otoliths, the marginal zones of which were opaque from December to May and translucent from June to November. Average lengths of the age groups and annual increments were measured from a curve fitted by inspection to point estimates of lengths at capture. Burb
Authors
Merryll M. Bailey
Fire and fuel relationships in mixed conifer ecosystems of Yosemite National Park
No abstract available at this time
Authors
J. W. van Wagtendonk
A review of the life history of the southern flying squirrel, Glaucomys volans, and a late winter study of a population in southeastern Ohio
No abstract available at this time
Authors
R. L. Hothem
Highways and their impact on the wildlife in the pinyon-juniper-oak woodland and grassland in north-central Arizona
No abstract available.
Authors
Charles L. Douglas, R. Roy Johnson