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Specimen collecting
Taking of samples from the environment for study.
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Results 11 - 20 of 21 listed alphabetically [list by similarity]
PDF Macroinvertebrate and algal community sample collection methods and data collected at selected sites in the Eagle River watershed, Colorado, 2000-07 [More info]
Macroinvertebrate data collected by USGS or USFS from 73 sites from 2000 to 2007 and algal data collected from up to 26 sites between 2000 and 2001 in the Eagle River watershed, with emphasis on methods of sample collection and data processing.
PDF Microbial ecology of deep-water mid-Atlantic canyons [More info]
Plan for an upcoming study, at the microbiological scale, of the benthic communities (including corals) that reside in and around mid-Atlantic canyons, which are located at the edge of the continental shelf.
Nonindigenous aquatic species alert system [More info]
Reports indicating locations where non-indigenous aquatic organisms have been collected. Includes RSS feed you can subscribe to.
PDF Noninvasive methods for monitoring bear population trends [More info]
We estimate population growth rates by collecting hair at natural bear rubs along trails, roads, and fence and power lines, and analyzing the DNA from the hair.
PDF Occurrence, distribution, and concentrations of selected contaminants in streambed- and suspended-sediment samples collected in Bexar County, Texas, 2007-09 [More info]
Study showing which chemicals found in sediments were most common, with methods used and likely consequences of their high concentrations.
Oculina Bank - geology of a deep-water coral reef habitat off Florida [More info]
Brief report on sidescan sonar data, sediment sampling, and submersible and video photography studies of destruction of deep-water coral pinnacles where fish spawn off east-central Florida in the Oculina Bank in order to restore and protect the habitat.
PDF Prehistoric packrats piled up clues to climate change [More info]
Hoarding behavior preserved prehistoric materials we can use as clues to ancient climate and ecosystem changes.
PDF U.S. Geological Survey protocol for sample collection in response to the Deepwater Horizon oil spill, Gulf of Mexico, 2010 [More info]
It is important that we collect samples consistently and properly to assure the quality of the information needed by decision makers. This report explains the procedures for sampling water, sediment, benthic invertebrates, and microorganisms.
PDF USGS Zebra Mussel Monitoring Program for north Texas [More info]
General characteristics of this invasive freshwater mollusk, focusing on how we monitor its presence and migration through this region.
PDF Use of Semipermeable Membrane Devices (SPMDs) in Petroleum Polluted Waters [More info]
Provides a brief discussion of issues surrounding the use and capabilities of SPMDs, which can be used in monitoring petroleum spills.
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