Status and Trends

Reports & Publications

Effect of Species Rarity on the Accuracy of Species Distribution Models Status and Trends of the Nation's Biological Resources, vols. 1-2

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Related Subjects

Marine

Bays, Deltas & Estuaries Intertidal/Coastline

Agricultural Practice (Impacts)

Threatened and Endangered Species

Crustaceans
Crustaceans are found in marine, brackish and fresh waters and are comprised of a large number of arthropods, which includes a various number of animals such as lobsters, crabs, shrimp, crayfish and barnacles. Crustaceans usually have hard shells (exoskeleton) and segmented bodies with pairs of jointed appendages. There are least 77 species of crustaceans that are considered nonindigenous to the waters in which they occur. Out of these 77 species, 44 have become established in their new environment.

7 Total Items

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Habitat Requirements of the Endangered California Freshwater Shrimp in Streams on the Point Reyes National Seashore and Golden Gate National Recreational Area

Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL

wfrc.usgs.gov — The California freshwater shrimp (Syncaris pacifica) is a federally listed endangered species whose distribution is seemingly restricted to low elevation perennial streams in Marin, Sonoma, and Napa counties north of San Francisco Bay, California. This study will help understand habitat requirements of shrimp by quantitatively assessing the More...

Asian shore crab, Japanese shore crab, Pacific crab, Hemigrapsus sanguineus (De Haan) (Arthropoda: Grapsidae)

Publisher: USGS | Science Center: Florida Integrated Science Center (FISC, Gainesville) | Format: URL

fl.biology.usgs.gov — This webpage is a species profile and nonindigenous species information bulletin of the Asian shore crab, Japanese shore crab, Pacific crab, Hemigrapsus sanguineus (De Haan)(Arthropoda: Grapsidae), with information on its identification and native range, life history, habitat, nonindigenous occurrences, means of introduction, its environmental More...

Using Parasites to Monitor Ecosystem Health

Publisher: USGS | Science Center: Western Fisheries Research Center (WFRC, Seattle) | Format: URL

www.werc.usgs.gov — Parasites can play a positive role in ecosystems. The USGS Western Ecological Research Center is working with the Channel Islands National Park in California to better understand how bacterial epidemics can protect kelp forests from overgrazing by sea urchins and how parasitic castrators might be used against invasive crabs. Researchers will More...

National Resources Monitoring Partnership (NRMP)

Publisher: NBII | Format: URL

www.nbii.gov — Natural resource managers face complex decisions that require a clear understanding of the status of wildlife populations and their habitats. Monitoring is key to making effective management decisions and evaluating the outcomes of those decisions. The goal of NRMP is to improve the accessibility of monitoring efforts to resource managers to aid More...

National Resources Monitoring Partnership (NRMP) Newsletter

Publisher: USGS | Science Center: Fort Collins Science Center (FORT, Ft. Collins) | Format: URL

www.fort.usgs.gov — Natural Resource Monitoring Partnership (NRMP) is a collaborative effort by the natural resource management community to improve monitoring efforts in order to support effective evaluation and decision-making by sharing information on monitoring projects and protocols. The Natural Resource Monitoring Partnership was built for easy access to More...

Conservation Genetics: Insects, Chelicerates, and Crustaceans

Publisher: USGS | Science Center: Biological Informatics | Format: URL

biology.usgs.gov — This web page presents samples of genetics and genomics research from the USGS Biological Resources Discipline about the conservation genetics of insects, chelicerates, and crustaceans.

Nonindigenous Aquatic Species Program (NAS)

Publisher: USGS | Science Center: Florida Integrated Science Center (FISC, Gainesville) | Format: URL

fl.biology.usgs.gov — Invasive nonindigenous species are important because they threaten native communities, alter habitats, and can have significant economic impacts. In aquatic environments, invasive species can be especially noxious because native species have few options for escaping direct interactions such as predation and competition for habitat and food. This More...