USGS: Science Topics: field sampling

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Field sampling

Collecting pieces or specimens or making measurements or observations at determined intervals or areas. Results may be used as representative of the whole research area or population.

Subtopics:
Animal tracking (12 items)
Capturing (animals) (12 items)
Drilling and coring (16 items)
Plant and animal tagging (5 items)
Plot sampling (2 items)
Sexing (plants & animals) (2 items)
Specimen collecting (10 items)
Transect sampling (1 items)
Water sampling (42 items)

Fish inventories (6 items)

Results 71 - 80 of 105 listed by similarity [list alphabetically]

Reservoir sediment studies in Kansas [New Window]: Report of completed reservoir sediment studies in Kansas using a combination of bathymetric surveying, sediment coring, chemical analysis, and statistical analysis to understand the quantity and quality of deposited sediment.
Resources for banders [New Window]: Links to bird banding manual, banding associations, equipment and suppliers, bibliography, band size lookup, recapture database, bander services, aging and sexing birds, longevity records, Canadian atlas of bird banding and other resources.
Reston Chlorofluorocarbon Laboratory [New Window]: Site on the Chlorofluorocarbon Laboratory and its analytical services for CFCs, sulfur hexafluoride, dissolved gases including nitrogen, argon, methane, carbon dioxide, oxygen, and helium, and tritium/helium-3 dating.
Scientific drilling in Long Valley, California: What will we learn? [New Window]: Description of 1998 drilling project at Long Valley Exploratory Well located on Long Valley Caldera's resurgent dome to monitor changing conditions beneath the dome. (Document in PDF format.)
Source Water-Quality Assessment [New Window]: Characterize the quality of selected rivers and aquifers used as a source of supply to community water systems in the United States to determine the occurrence of about 280 primary unregulated anthropogenic organic compounds.
Summary and analysis of the U.S. government bat banding program [New Window]: Analysis of the program with a detailed study of the best collection of data available from it. Includes recommendations for future studies of bats.
Summary of suspended-sediment concentration data, San Francisco Bay, California, water year 2000 [New Window]: Suspended-sediment concentration data were collected in San Francisco Bay during water year 2000 using optical backscatterance sensors and water samples. This report presents the data-collection methods, data, and calibration plots.
Surveillance for asian H5N1 avian influenza in the United States [New Window]: General description of US government efforts to monitor the occurrence of highly pathogenic avian influenza in wild migratory birds.
Survival of adult female northern pintails in Sacramento Valley, California [New Window]: Report on the population of northern pintails between 1979 and the 1990s in Sacramento Valley, California, including methods of study including radio telemetry, causes of mortality, morphometrics, survival rates, and management implications.
Taming of a wild research well in Yellowstone National Park during November 1992 [New Window]: A valve failed in a research well, causing an uncontrolled eruption of steam and hot water. Video program shows technical problems encountered in controlling and capping the well.

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