Taking of samples from the environment for study.
Gulf of Mexico deep-sea coral ecosystem studies, 2008-2011 [ More info] Deep-sea corals, also known as cold-water corals, have become a topic of interest due to conservation concerns over the impacts of trawling, exploration for oil and gas, and climate change.
Investigating atmospheric mercury with the U.S. Geological Survey mobile mercury laboratory [ More info] Explains sources of mercury in the air, ways in which mercury is concentrated in animals, and describes how we measure deposition of atmospheric mercury, with summaries of observations.
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.
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.
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.
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.
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.
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.
Alphabetical Index of Topics
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