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: 41771
Mapping of mountain soils west of Denver, Colorado, for landuse planning
No abstract available.
Authors
P. W. Schmidt, Kenneth L. Pierce
Obsidian hydration dating and correlation of Bull Lake and Pinedale Glaciations near West Yellowstone, Montana
The ages of the last two glaciations near West Yellowstone, Montana, can be calculated by obsidian hydration techniques that are calibrated by K-Ar dating of obsidian-bearing lava flows. The average age of glacial abrasion of obsidian in the Pinedale terminal moraines is about 30,000 yr, with most age measurements between 20,000 and 35,000 yr. For the Bull Lake moraines, it is about 140,000 yr, wi
Authors
Kenneth L. Pierce, J. Obradovich, Irving Friedman
Residues of organochlorines and heavy metals in ruddy ducks from the Delaware River, 1973
In December 1973, eight ruddy ducks killed in an oil spill on the Delaware River were collected to be analyzed for residues of environmental pollutants. Whole carcasses were analyzed for organochlorine pesticides and livers were examined for lead, cadmium, and mercury. Residues of polychlorinated biphenyls and DDT and/or its metabolites were present in all carcasses. Dieldrin and hexachlorobenzene
Authors
D. H. White, T. E. Kaiser
Chemical residue content and hatchability of screech owl eggs
Eggs of wild Screech Owls were collected from nests in northwestern Ohio in 1973. One egg was taken from each of 19 nests near the start of incubation. Mean shell thickness in these 19 eggs and mean thickness of 16 unhatched eggs did not differ from 49 archival eggs collected in Ohio and Pennsylvania prior to the widespread use of organochlorine pesticides. Residues were generally low although all
Authors
E. E. Klaas, D. M. Swineford
Rapid diagnostic approaches in the identification of gram-negative bacterial diseases of fish
No abstract available.
Authors
E. B. Shotts, G. L. Bullock
Organochlorine pesticide residues associated with mortality: Additivity of chlordane and endrin
No abstract available.
Authors
J. Larry Ludke
The abundance and diversity of the herpetofaunas of tropical forest litters
Quantitative and qualitative samples of amphibian and lizard faunas were taken from forest litter in Costa Rica and compared with similar samples collected in Borneo, the Philippines, and Panama. Animal abundance is about ten times greater in Costa Rican lowland wet forest than in Borneo. Radically different routes and rates of energy flow are postulated to account for the difference. In a series
Authors
Norman J. Scott
Primates and their habitats in northern Colombia with recommendations for future management and research
This report covers a survey of forests and wild primates carried out by its authors in northern Colombia during May, July, and August 1974. The results of a 1973 field report on this report by Bernstein et al. (1) are also included.
Authors
Norman J. Scott, Thomas T. Struhsaker, Kenneth Glander, Hernano Chiriví
Columnaris disease of fishes
No abstract available at this time
Authors
S. F. Snieszko, G. L. Bullock
Field tests of isobornyl thiocyanoacetate (Thanite) for live collection of fishes
Abstract not submitted to date
Authors
R.M. Burress, P.A. Gilderhus, K.B. Cumming
Toxicity of 3-trifluoromethyl-4-nitrophenol (TFM), 2',5-dichloro-4'-nitrosalicylanilide (Bayer 73), and a 98:2 mixture to fingerlings of seven fish species and to eggs and fry of coho salmon
Abstract not submitted to date
Authors
T.D. Bills, L. L. Marking
Book Review: Minnesota's birds: where, when and how many by Janet C. Green and Robert B. Janssen
No abstract available.
Authors
D. H. Johnson