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: 41778
Viral erythrocytic necrosis: Some physiological consequences of infection in chum salmon (Oncorhynchus keta)
Erythroid cells in chum salmon (Oncorhynchus keta) susceptible to infection with erythrocytic necrosis virus (ENV) were examined by light and electron microscopy. Cells of stages II, III, IV, V, and VI contained complete eyrthrocytic necrosis virions in the cytoplasm. Viruses closely resembling ENV were also detected in the nuclei of some erythroblasts. Some secondary consequences of ENV infection
Authors
John R. MacMillan, Daniel M. Mulcahy, Marsha L. Landolt
Air supersaturation in surface water: a continuing engineering and biological problem
No abstract available
Authors
G.R. Bouck
Two Cenozoic igneous events on the Alaska Peninsula: A section in Geological Survey research 1980
Potassium-argon dating work and geologic mapping in the Chignik and Sutwik Island quadrangles (loc. 23) by F. H. Wilson, R. L. Detterman, J. E. Case, M. E. Yount, and others (Wilson and others, 1978; Detterman and others, 1979) have shown the existence of two major Cenozoic igneous episodes on the Alaska Peninsula. These events range in age from Eocene to late Oligocene and from early Miocene and
Authors
Toxicity of five forest insecticides to cutthroat trout and two species of aquatic invertebrates
The Northern Rocky Mountain region has had scattered infestation of the western spruce budworm Christoneura occidentalis since the early 1900's (U.S. DEPARTMENT OF AGRICULTURE (USDA) 1976b). On the basis of aerial surveys in 1975, TUNNOCK et al. (1976), estimated that budworm defoliation occurred on 2,278,804 acres of six National Forests in Montana. Since the use of DDT was banned in 1972, there
Authors
D. F. Woodward, W.L. Mauck
Chlorinated hydrocarbons as a limiting factor in the reproduction of lake trout in Lake Michigan
No abstract available.
Authors
Wayne A. Willford
Food of alewives, yellow perch, spottail shiners, trout-perch, and slimy and fourhorn sculpins in southeastern Lake Michigan
Stomachs of 1, 064 alewives (Alosa pseudoharengus), 1, 103 yellow perch (Perca flavescens), 246 spottail shiners (Notropis hudsonius), 288 trout-perch (Percopsis omiscomaycus), 454 slimy sculpins (Cottus cognatus), and 562 fourhorn sculpins (Myoxocephalus quadricornis) from Lake Michigan were examined for food contents. Fish were sampled primarily from March to November and nearly all were caught
Authors
LaRue Wells
Late Mesozoic and Cenozoic tectonics and the age of porphyry copper prospects: Chignik and Sutwik Island quadrangles, Alaska Peninsula
No abstract available.
Authors
Frederic H. Wilson
Geological Survey research 1980
A summary of recent significant scientific and economic results accompanied by a list of geologic, hydrologic, and cartographic investigations in progress.
Authors
Human disturbance at water sources of desert bighorn sheep
No abstract available at this time
Authors
David M. Leslie, C. L. Douglas
Studies of bighorn-burro interaction in Death Valley: progress toward the objectives
No abstract available at this time
Authors
C. L. Douglas
A tentative seven-day test for predicting effects of stress on populations of Daphnia pulex, Special Technical Publication 707
No abstract available at this time
Authors
J. G. Geiger, A.L. Buikema, J. Cairns
Important tapeworms of North American freshwater fishes
No abstract available at this time
Authors
A.J. Mitchell, G. L. Hoffman