Arthropods of class Crustacea, such as crabs, lobsters, shrimp, prawns, or barnacles, with hard shells (exoskeleton) and segmented bodies with pairs of jointed appendages.
Biological resource status and trends: Crustaceans [ More info] Information concerning status and trends of biological resources, focusing on Crustaceans
EverView Data Viewer [ More info] Software and data to help people model the likely response of populations of organisms to various strategies that might be employed to remedy the effects of damaged ecosystems.
Free-living and parasitic copepods (including Branchiurans) of the Laurentian Great Lakes [ More info] Manual of taxonomic keys, location, and descriptive details of free-living and parasitic copepods in the Great Lakes. Viewing requires screen resolution of 1024 x 768 or above.
Invasive crayfish in the Pacific Northwest [ More info] These organisms have negative effects on local ecosystems, but we don't yet know how extensively they have spread. Here is a key to help people identify them.
Nonindigenous Plants and Animals in Florida [ More info] Brief descriptions of programs of research on aquatic nonindigenous plants and animals at the Florida Integrated Science Center with links to descriptions, videos, posters, and reports on various exotic plant and animals species.
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.
Nonindigenous crustacean distribution information [ More info] Descriptions of crustaceans and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on crustaceans.
Paleontological analyses [ More info] Links to USGS capabilities in paleontological analyses of fossils such as mollusks, diatoms, palynomorphs, ostracodes, calcareous nannofossils, etc. Includes descriptive information, technique, equipment, and contacts for each fossil group.
Southwest Caves Reveal New Forms of Life [ More info] These lightless and nutrient-poor natural systems are home to life forms found nowhere else on Earth. Three new genera and at least 15 new species have been discovered here.
Toxicity and bioavailability of metals in the Missouri River adjacent to a lead refinery [ More info] Report (PDF format) on an evaluation of the potential environmental impacts of contaminated ground water from a metals refinery adjacent to the Missouri River in Omaha, Nebraska testing water and sediments for contaminants and toxicity.
Whales and walrus: tillers of the seafloor [ More info] Report on sea floor marks in the Northeast Bering Sea and Chukchi Sea that were identified as pits and furrows caused by whales and walruses in the process of feeding on bottom crustaceans.
Alphabetical Index of Topics
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