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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 21 - 30 of 105 listed by similarity [list alphabetically]
Climate-Driven Ocean Changes Affect Estuaries [New Window]
Research findings and examples of application to real problems--Pacific Ocean cooling triggers phytoplankton blooms in San Francisco Bay.
Core Research Center [New Window]
Overview of the Core Research Center (CRC) in Denver for preserving valuable rock cores for permanent storage and making the cores available for examination and testing. Includes links to services, well reports, and resources.
Detecting Amphibian-Killing Fungus Helps Scientists Study Amphibian Declines [New Window]
Research findings and examples of application to real problems--a new method to track down amphibian disease in the environment.
Discovery for Recovery: an International Pintail Recovery Initiative (Pinsat) [New Window]
Using satellite telemetry and field studies to track pintail ducks during spring migration north from California's Central Valley plus pintails in New Mexico and Texas. Includes links to migration maps, journal, duck calls, and field methods.
Dragonflies and damselflies (Odonata) of the United States [New Window]
Manual on dragonflies and damselflies (Odonata), with links to photo thumbnails, checklists, distribution maps, and other Odonata information.
Drilling technique [New Window]
Brief description of the coring system and crew used to obtain cores for geological research in the Eastern Region as one of the specialized capabilities of USGS teams.
Earthworms of North Dakota [New Window]
Species maps, aggregate map, earthworm diagram, species photos, and bibliography of earthworm species found in North Dakota
PDF Effects of wastewater on forested wetlands [New Window]
Study of the effects of the practice of cycling municipal nutrient-enriched wastewater from holding ponds through forested wetlands. Studies were in the Cypiere Perdue Swamp, Louisiana, and the Drummond Bog, Wisconsin.
Electronic Natural History Museum (ENHM): the world of natural history on your computer [New Window]
The Electronic Natural History Museum Project is a collaborative effort among government agencies, natural history collections and museums, and universities for providing access to data on specimens in natural history museum collections.
Flying by Night: USGS Scientists Put Technology to Work on Bats [New Window]
Short description of techniques used to monitor migration patterns and behavior of bats in New Mexico.
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