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Nonindigenous Mollusks Distribution Information

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...

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Long Term Resource Monitoring Program

This web resource provides decision makers with the information needed to maintain the Upper Mississippi River System as a viable multiple-use large river ecosystem. This resource also includes Data and sampling information, publication links, reports, other related documents and statistics, as well as links to field stations and other projects More...

  • hoop net

National Invasive Species Forecasting System

The FORT research team will develop maps of invasive species at local, regional, and national scales and identify priority invasive species, vulnerable habitats, and pathways of invasion. County-level and point data on occurrence will be linked to plot-level and site-level information on species abundance and spread. Together, USGS, NASA, and CSU More...

  • Photograph of Cheatgrass at Dinosaur National Monument

Sea Turtles in the Dry Tortugas: Tracking Movements of Endangered Species in Florida's Coral-Reef Habitats

Kristen Hart and Keith Ludwig of the USGS Florida Integrated Science Center (FISC) participated in two research cruises in 2008 to study patterns of habitat use by endangered sea turtles in and around the National Park. Hart's research effort focuses on quantifying patterns of sea turtle habitat use, employing capture-recapture and satellite- and More...

  • One of the smallest juvenile green turtles (Chelonia agassizii) captured thus far, August 2008, Dry

Wildland Fire in Ecosystems: Fire and Nonnative Invasive Plants

This review of information on relationships between wildland fire and nonnative invasive plants can assist fire managers and other land managers concerned with prevention, detection, and eradication or control of nonnative invasive plants. The 16 chapters in this volume synthesize ecological and botanical principles regarding relationships between More...

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CCMA: National Status & Trends Program

This website is the entry point to data for the Mussel Watch, Bioeffects, and Benthic Surveillance programs. This resource links to the National Status & Trends Program fact sheet (pdf), and several projects including Mussel Watch, Benthic Surveillance, and Bioeffects Assessment. Users can also get general information about the Center for More...

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Foreign Nonindigenous Carps and Minnows (Cyprinidae) in the United States - A Guide to their Identification, Distribution, and Biology

This guide contains an identification key to the eleven foreign nonindigenous cyprinids, as well as species accounts that include physical characteristics, reproduction, ecology, and distribution in its native habitat and in the United States. Biologists, resource managers and others interested in nonindigenous fishes will find it a useful tool More...

  • Carp ID Cover Image

Nonindigenous Fish Program

New nonindigenous fishes are introduced to the region's waters each year and already-established invasive fishes continually expand their ranges. Assessing the effects of a new invader on native species and environments is complicated by the fact that most habitats are under stress as a result of human disturbance and because many sites are More...

  • Spotted Tilapia (Tilapia mariae)

Southwest Exotic Plant Information Clearinghouse

The Internet Map Server (IMS) visually displays the non-native, invasive plants (weed) occurrences in the current (2003) SWEMP database. An IMS allows you to interactively draw, query, and print maps. The SWEMP IMS was developed from ESRI's ArcIMS presentation product.The Southwest Exotic Plant Information Clearinghouse is a cooperative effort More...

  • SWEMP IMS Screenshot, United States Map

Wyoming Sagebrush Fire

Periodic fire is a natural part of sagebrush steppe ecosystems in the Great Basin. However, a suite of human-caused factors has dramatically changed fire regimes in many of these systems. Decades of fire suppression and livestock grazing have produced dense, single-aged sagebrush stands and invasion by cheatgrass (Bromus tectorum) has increased More...

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Case of the Red Shiner: What Happens When a Fish Goes Bad?

The red shiner (Cyprinella lutrensis) is a hardy, widespread minnow native to the middle and southwestern United States and Mexico. Its native range encompasses the lowland tributaries of the Mississippi River and western Gulf slope drainages to the Rio Grande River. The red shiner peripherally occurs in the southeastern United States, inhabiting More...

  • Male red shiner in near-peak spawning coloration (46 mm Standard Length).

Eurasian Ruffe

Eurasian Ruffe pose a threat to native fish because they(1) mature quickly, (2) have a high reproductive capacity, and (3) easily adapt to new environments. Ruffe were first detected in western Lake Superior in 1986. UMESC scientists are conducting research on various types of piscicides (chemicals that kill fish). They are attempting to develop More...

  • Eurasian ruffe (Gymnocephalus cernuus)