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: 41763
Geographic distribution of some species of trichodinids (Ciliata: Peritricha) parasitic on fishes
No abstract available.
Authors
J. Lom, G. L. Hoffman
Comparison of various methods of hemoglobin determination on catfish blood
No abstract available.
Authors
H.N. Larsen
Crystal formation in furunculosis agar
SINCE ITS INTRODUCTION SOME MONTHS AGO, FURUNCULOSIS AGAR has been employed in the diagnosis of suspect furunculosis and also as a general purpose medium. During our work with this medium we have noticed discrete "colonies," of crystalline material, which very closely resemble microbial colonies. These crystal colonies are compact and appear on both the surface and subsurface; they occur in inocul
Authors
G. L. Bullock, A. J. Ross
1,1' diacetyl-1,1'-dihydro-4,4' bipyridine and the yellow and colorless modifications of 1,1'-diacetyl-1,1',4,4'-tetrahydro-4,4' bipyridine
No abstract available.
Authors
A.T. Nielsen, D. W. Moore, G.M. Muha, K. Highberg
Toxicological effects of herbicides on the fish environment Part 2
Abstract has not been submitted
Authors
C.R. Walker
Toxicological effects of herbicides on the fish environment Part 1
Abstract has not been submitted
Authors
C.R. Walker
Simazine and other s-triazine compounds as aquatic herbicides in fish habitats
Abstract has not been submitted
Authors
C.R. Walker
Numbered nasal discs for waterfowl
Numbered nasal discs were successfully used in studies requiring large numbers of individually marked waterfowl. The procedure for constructing these discs is outlined. Blue-winged teal (Anas discors) with 5/8-inch discs, and canvasback (Aythya valisineria) and redhead (A. americana) with 3/4-inch discs can be individually identified up to 50 and 80 yards, respectively, with a gunstock-mounted, 20
Authors
J. C. Bartonek, C.W. Dane
Bottom sediments of Saginaw Bay, Michigan
Saginaw Bay is a southwest extension of Lake Huron on the east shore of the Southern Peninsula of Michigan. It is a shallow-water derivative of the Pleistocene Lake Saginaw. Sixty-one bottom samples were collected on a semigrid pattern and analyzed physically. Findings were treated statistically. Sediments range in size from large pebbles to clay. Medium- to fine-grained clear quartz sand is commo
Authors
Leonard E. Wood
The taxonomic status of Leucichthys macropterus, a cisco of Lake Erie
No abstract available.
Authors
Stanford H. Smith
Status of the deepwater cisco population of Lake Michigan
The species and size composition and the abundance of the cisco (Leucichthys spp.) population of Lake Michigan have undergone drastic changes since the sea lamprey became established in the 1940's. The changes were measured by the catches of gill nets of identical specifications fished at the same seasons, depths, and locations in 1930-32, 1954-55, and 1960-61. The two largest ciscoes (johannae an
Authors
Stanford H. Smith