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

Subtopics

None

Related Subjects

Agricultural Practice (Impacts)

Threatened and Endangered Species

Mollusks+Other Invertebrates
Mollusks are invertebrates that have soft, non-segmented bodies and are often covered by a hard shell. This group of invertebrates includes snails, clams, oysters, whelks, mussels, slugs, octopuses, and squids. Ranging from minute snails and clams to large organisms such as squid and octopus, many mollusks live in intertidal marine environments, shallow subtidal and the continental shelf. Not all mollusks are marine organisms, however. Nearly 300 species of mussels inhabit freshwater rivers and lakes in North America. This is the richest diversity of mussels found in the world. Freshwater mussels are sedentary, long-lived (some live over 100 years) mollusks that live in sediments and filter water to feed.

Did You Know...?

NAS - Nonindigenous Aquatic Species
Mollusks (Phylum Mollusca) are found in marine, brackish, and fresh waters. They include a diverse group of animals such as clams, mussels, oysters, scallops, abalone, conchs, shipworms, snails, nudibranchs, chitons, squids, and octopuses. The most notable nonindigenous mussel introduction is the zebra mussel (Dreissena polymorpha), a native of eastern Europe.

6 Total Items

Sort By: Title: Science Center: Page: 1 of 1 Articles Per Page:

Nonindigenous Mollusks Distribution Information

Publisher: USGS | Science Center: USGS Other | Format: URL

nas.er.usgs.gov — This site has been established as a central repository for accurate and spatially referenced biogeographic accounts of nonindigenous aquatic species. The program provides scientific reports, online/realtime queries, spatial data sets, regional contact lists, and general information. The data is made available for use by biologists, interagency More...

Genetic population structure of the green floater (Lasmigona subviridis): Identification of management units and associated fish hosts

Publisher: USGS | Science Center: Leetown Science Center (LSC, Kearneysville) | Format: URL

www.lsc.usgs.gov — Freshwater bivalves, which are among the most threatened animals in North America, present significant challenges to conservation biologists that attempt to maintain ecological and evolutionary processes within and among populations. Effective management of this rare fauna is often complicated because inadequate information exists for 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...

Effects of Thinning and Prescribed Fire on Aquatic and Terrestrial Herpetofauna: Little River Adaptive Management Area

Publisher: USGS | Science Center: Forest and Rangeland Ecosystem Science Center (FRESC, Corvallis) | Format: URL

fresc.usgs.gov — Prescribed fire and forest thinning is a management strategy that promotes the development of forest structure and composition similar to that present under a native fire regime. This research summary describes how FRESC researchers will address the effects of prescribed fire and forest thinning on the diversity, abundance, and habitat More...

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...