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: 41894
Production and standing crop of Hexagenia (Ephemeroptera) in a large reservoir
Population dynamics of the mayflies, Hexagenia limbata (Serville) and Hexagenia bilineata (Say), were studied in Lewis and Clark Lake from 1962 to 1969. Nymphs that hatched in June and July emerged as adults in 13-14 months (titled 1-year cycle) and nymphs hatched in late August or September emerged in 22 months (titled 2-year cycle). Although an estimated 79% of the newborn nymphs begin life in t
Authors
P.L. Hudson, G.A. Swanson
Review of changing wildlife habitat and requirements for maintaining key species
Abstract has not been submitted
Authors
H.W. Miller
Red fox spatial characteristics in relation to waterfowl predation
Radio-equipped red foxes (Vulpes vulpes) on the Cedar Creek area in Minnesota were spatially distributed, with individual families occupying well defined, nonoverlapping, contiguous territories. Territory boundaries often conformed to natural physical boundaries and appeared to be maintained through some nonaggressive behavior mechanism. Individual foxes traveled extensively throughout the family
Authors
A. B. Sargeant
A recent record of the meadow jumping mouse, Zapus hudsonius, in subarctic Canada
The occurrence of Zapus hudsonius is confirmed for the area lying N of the Mackenzie River and Great Slave Lake.
Authors
Gary Krapu, David L. Traugher
Movements and denning habits of a badger
Abstract has not been submitted
Authors
A. B. Sargeant, D.W. Warner
Population irruption of the least weasel (Mustela nivalis) in east central North Dakota
Abstract has not been submitted
Authors
J. T. Lokemoen, K.F. Higgins
Life history and production of walleyes of the 1959 year-class in western Lake Erie, 1959-62
Because of the near collapse of the fishery for walleyes (Stizostedion vitreum vitreum) in Lake Erie in the late 1950's, walleyes of the 1959 year-class were studied to gain a better understanding of the life history of the species and the dynamics of the population. In the summer of 1959 most walleyes of the year-class were in water 10 to 20 feet deep along the south and west shores of the wester
Authors
John W. Parsons
Factors of ecologic succession in oligotrophic fish communities of the Laurentian Great Lakes
Oligotrophic fish communities of the Great Lakes have undergone successive disruptions since the mid-1800s. Major contributing factors have been intensive selective fisheries, extreme modification of the drainage, invasion of marine species, and progressive physical–chemical changes of the lake environments. Lake Ontario was the first to be affected as its basin was settled and industrialized earl
Authors
Stanford H. Smith
Lake Michigan: effects of exploitation, introductions, and eutrophication on the salmonid community
Lake Michigan surface area is 22,400 square miles and its main depth is 276 ft. Its fauna is generally typical of North American oligotrophic lakes. The original fish populations included 10 coregonines and one salmonine. The lake whitefish, the lake herring, and the lake trout were most abundant. Man's activities have caused great changes in the lake in the past 120 years. Although changes in wat
Authors
LaRue Wells, Alberton L. McLain
The future of salmonid communities in the Laurentian Great Lakes
The effects of human population growth, industrialization, and the introduction of marine fishes have reduced the suitability of each of the Great Lakes for oligotrophic fish communities. The ultimate consequence has been a reduction of fishery productivity that has ranged from extreme in Lake Ontario to moderate in Lake Superior. If measures are not taken to alleviate the adverse effects of marin
Authors
Stanford H. Smith