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Field experiments
Deliberate arrangement of objects and events in the field to observe the behavioral response of natural systems or organisms.
Subtopics:
Tracer study (2 items)
Results 1 - 9 of 9 listed by similarity [list alphabetically]
Biological resource status and trends: Experimental design and methods [New Window]
Information concerning status and trends of biological resources, focusing on experimental design and methods
Burrowing owl winter ecology and use of artificial burrows in South Texas [New Window]
Experimental use of artificial burrows in south Texas to help in conservation of the migratory burrowing owls (Athene cunicularia) that breed in dry grasslands using animal burrows.
Contamination in Fractured Rock Aquifers [New Window]
Overview of fractured rock research aimed at understanding the movement of water through fracture networks, and characterize field conditions influencing contaminant migration. Includes programs and publications.
General Earthquake Observation System (GEOS) [New Window]
Earthquake and aftershock data collected by the USGS General Earthquake Observation System project in Menlo Park, California.
Geochemistry and tracer studies [New Window]
Overview of chemical analyses, tracer studies, gas geochemistry, stable isotopes analyses, organic chemistry, and thermometry capabilities at major USGS laboratories with links to technique, equipment, and contacts for each procedure.
Mercury Concentrations in Streams Found to Go Through Daily Cycles [New Window]
Research findings and examples of application to real problems--highly variable conditions cause the production of toxic methyl mercury in the environment which accumulates in fish.
PDF Reintroduction of whooping cranes: the ultra (light) in animal training experience [New Window]
Article on experiment to teach migration routes to birds using ultralight aircraft as a means to reintroduce a migratory flock of whooping cranes to the eastern United States.
Scientific capabilities [New Window]
Links to information on laboratory and field scientific techniques and equipment used and maintained for geologic research in the USGS. Site is incomplete and information is not available for some of the links.
What Mobilizes Arsenic in Ground Water? [New Window]
Research findings and examples of application to real problems--chemical reactions between nitrate, iron, and oxygen can affect the mobility of trace amounts of arsenic.


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