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: 41758
Fifty-sixth Christmas Bird Count. 147. Southern Dorchester County, Md
Summary and Recommendations: We suggest that managers are approaching the limits of their ability to improve waterfowl harvest management, primarily because the information needed to make better decisions is being sacrificed by the current approach to setting regulations. We propose an actively adaptive management strategy in which regulatory decisions play a dominant role in reducing uncertaint
Authors
C.S. Robbins
New bird repellents for longleaf seed
No abstract available.
Authors
B. Meanley, W.F. Mean, H.J. Derr
Hematology of healthy and virus-diseased sockeye salmon, Oncorhynchus nerka
No abstract available
Authors
M.E. Watson, R.W. Guenther, R.D. Royce
Histopathology of kidney disease in fish
Kidney disease is one of the most puzzling fish diseases known to exist in the United States. In less than Io years it has invaded the Pacific Northwest, exacting a heavy toll of hatchery salmon. Its first appearance apparently was in Massachusetts where Belding and Merrill' described a disease similar to that now seen on the Pacific Coast. In I946 it was diagnosed in Washington2 and since that ti
Authors
E. M. Wood, W. T. Yasutake
Lignasan for bacterial gill disease
Bacterial gill disease plagues salmon and trout in many hatcheries: some infections are sporadic, but others are continual. An inexpensive, easily applied, stable, safe chemical would be highly advantageous for treatment. The use of Roccal as a 1-hour treatment for bacterial gill disease (Fish 1947) was developed at the Leavenworth (Washington) Station of the Fish and Wildlife Service in 1942 and
Authors
Robert R. Rucker, B. J. Earp, Roger E. Burrows
Histopathologic changes of a virus-like disease of sockeye salmon
Rucker et al., (1953) described a disease of sockeye salmon (Oncorhynchus nerka) of possible viral etiology. First seen in Washington in 1951 with relatively minor losses, the disease recurred in 1952 killing over two million fingerling salmon with a mortality rate of 91.5 percent (Watson, 1954). In 1953, the disease was present in every sockeye salmon hatchery in the state. Rucker, Watson and the
Authors
E. M. Wood, W. T. Yasutake
Tissue damage in salmonids caused by Halisidota argentata Packard
During the histological examination of a collection of wild and hatchery salmonids, a peculiar foreign body was occasionally observed in various organs, particularly in the viscera. These objects, usually accompanied by a focal inflammation, were observed in 10 of 75 samples of wild trout and salmon collected in Oregon and Washington and were believed to represent an unknown type of parasitism. Th
Authors
E. M. Wood, W. T. Yasutake