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Organisms
Living individuals that grow, reproduce, and die.
Subtopics:
Algae (8 items)
Animals (197 items)
Archaea (2 items)
Bacteria (8 items)
Fungi (5 items)
Lichens (6 items)
Plants (organisms) (23 items)
Protists (1 items)
Viruses (6 items)
Related topics:
Results 1 - 228 of 228 listed by similarity [list alphabetically]
Biological resource status and trends: Taxa/Organisms [New Window]
Information concerning status and trends of biological resources, focusing on Taxa/Organisms
Alaska Science Center - Biological Science Office [New Window]
Homepage for programs of the Biological Science Office at the Alaska Science Center in Anchorage on birds, mammals, ecosystems and habitats, fish and fisheries, and other biological subjects.
Biological resource status and trends: Amphibians [New Window]
Information concerning status and trends of biological resources, focusing on Amphibians
Biological resource status and trends: Bats [New Window]
Information concerning status and trends of biological resources, focusing on bats
Biological resource status and trends: Birds [New Window]
Information concerning status and trends of biological resources, focusing on Birds
Biological resource status and trends: Carnivores [New Window]
Information concerning status and trends of biological resources, focusing on carnivores
Biological resource status and trends: Coleoptera (beetles) [New Window]
Information concerning status and trends of biological resources, focusing on Coleoptera (beetles)
Biological resource status and trends: Contaminants in animals [New Window]
Information concerning status and trends of biological resources, focusing on contaminants in animals
Biological resource status and trends: Contaminants in plants [New Window]
Information concerning status and trends of biological resources, focusing on contaminants in plants
Biological resource status and trends: Corals and sponges [New Window]
Information concerning status and trends of biological resources, focusing on corals and sponges
Biological resource status and trends: Crocodilians [New Window]
Information concerning status and trends of biological resources, focusing on crocodilians including alligators
Biological resource status and trends: Crustaceans [New Window]
Information concerning status and trends of biological resources, focusing on Crustaceans
Biological resource status and trends: Diadromous fish [New Window]
Information concerning status and trends of biological resources, focusing on diadromous fish
Biological resource status and trends: Diptera (flies) [New Window]
Information concerning status and trends of biological resources, focusing on Diptera (flies)
Biological resource status and trends: Ephemeroptera (mayflies) [New Window]
Information concerning status and trends of biological resources, focusing on Ephemeroptera (mayflies)
Biological resource status and trends: Fish [New Window]
Information concerning status and trends of biological resources, focusing on Fish
Biological resource status and trends: Forbs [New Window]
Information concerning status and trends of biological resources, focusing on forbs, herbaceous flowering plants that are not grasses, such as clover, sunflower, and milkweed
Biological resource status and trends: Fowl [New Window]
Information concerning status and trends of biological resources, focusing on fowl (birds)
Biological resource status and trends: Freshwater fish [New Window]
Information concerning status and trends of biological resources, focusing on freshwater fish
Biological resource status and trends: Frogs and toads [New Window]
Information concerning status and trends of biological resources, focusing on frogs and toads
Biological resource status and trends: Grasses [New Window]
Information concerning status and trends of biological resources, focusing on grasses
Biological resource status and trends: Hymenoptera (bees and wasps) [New Window]
Information concerning status and trends of biological resources, focusing on Hymenoptera (bees and wasps)
Biological resource status and trends: Insects [New Window]
Information concerning status and trends of biological resources, focusing on Insects
Biological resource status and trends: Lepidoptera (butterflies and moths) [New Window]
Information concerning status and trends of biological resources, focusing on Lepidoptera (butterflies and moths)
Biological resource status and trends: Lizards [New Window]
Information concerning status and trends of biological resources, focusing on lizards
Biological resource status and trends: Mammals [New Window]
Information concerning status and trends of biological resources, focusing on Mammals
Biological resource status and trends: Marine mammals [New Window]
Information concerning status and trends of biological resources, focusing on marine mammals
Biological resource status and trends: Microbes [New Window]
Information concerning status and trends of biological resources, focusing on Microbes
Biological resource status and trends: Mollusks [New Window]
Information concerning status and trends of biological resources, focusing on Mollusks
Biological resource status and trends: Nonvascular plants [New Window]
Information concerning status and trends of biological resources, focusing on nonvascular plants such as mosses and algae
Biological resource status and trends: Other invertebrates [New Window]
Information concerning status and trends of biological resources, focusing on other invertebrates
Biological resource status and trends: Passerines [New Window]
Information concerning status and trends of biological resources, focusing on passerines (birds)
Biological resource status and trends: Plants [New Window]
Information concerning status and trends of biological resources, focusing on Plants
Biological resource status and trends: Raptors [New Window]
Information concerning status and trends of biological resources, focusing on raptors (birds)
Biological resource status and trends: Reptiles [New Window]
Information concerning status and trends of biological resources, focusing on Reptiles
Biological resource status and trends: Rodents and rabbits [New Window]
Information concerning status and trends of biological resources, focusing on Rodents and rabbits
Biological resource status and trends: Salamanders [New Window]
Information concerning status and trends of biological resources, focusing on salamanders
Biological resource status and trends: Saltwater fish [New Window]
Information concerning status and trends of biological resources, focusing on saltwater fish
Biological resource status and trends: Shrubs [New Window]
Information concerning status and trends of biological resources, focusing on shrubs
Biological resource status and trends: Snakes [New Window]
Information concerning status and trends of biological resources, focusing on snakes
Biological resource status and trends: Trees [New Window]
Information concerning status and trends of biological resources, focusing on trees
Biological resource status and trends: Turtles [New Window]
Information concerning status and trends of biological resources, focusing on turtles
Biological resource status and trends: Ungulates (hoofed mammals) [New Window]
Information concerning status and trends of biological resources, focusing on Ungulates (hoofed mammals)
Biological resource status and trends: Waterfowl and shorebirds [New Window]
Information concerning status and trends of biological resources, focusing on waterfowl and shorebirds
Biological soil crusts [New Window]
Explains biological soil crusts, organism-produced soil formations commonly found in semiarid and arid environments, with special reference to their biological composition, physical characteristics, and ecological significance.
PDF Biological soil crusts: webs of life in the desert [New Window]
Fact sheet on the need to protect biological soil crusts in the desert. These crusts are most of the soil surface in deserts not covered by green plants and are inhabited by cyanobacterium (blue-green algae) and other organisms useful to the ecosystem.
Florida Integrated Science Center - biological science poster presentations [New Window]
Poster presentations for Center for Aquatic Resource Studies projects related to Greater Everglades, marine and coral studies, ecotoxicology, manatees, coastal ecology, nonindigenous aquatic species, coastal ecology, freshwater fisheries, and herpetology.
NBII: National Biological Information Infrastructure [New Window]
Portal of the National Biological Information Infrastructure (NBII) with links to diverse biological databases, information products, and analytical tools contributed by NBII cooperating organizations and agencies.
National Biological Information Infrastructure (NBII) Metadata Clearinghouse [New Window]
The NBII Metadata Clearinghouse contains standardized metadata-based descriptions to assist in locating and accessing useful biological data sets, information products, and applications software in a distributed network of cooperating data sources.
26th Annual Eastern Fish Health Workshop [New Window]
Workshop with papers on diseases, treatment, disease resistance, and immunology of fish, shrimp, corals, and lobsters.
PDF Algal toxins [New Window]
Chapter of Field Manual of Wildlife Diseases on algal toxins, red tide toxins, phycotoxins, dinoflagellates, cyanobacterium, and bird mortality due to algal toxicosis.
Amphibian Research and Monitoring Initiative [New Window]
Homepage for the Dept. of the Interior's Initiative coordinated by the USGS, for amphibian (frogs, toads, salamanders and newts) monitoring, research, and conservation. Links to National Atlas for Amphibian Distribution, photos, and interactive map serve
Amphibian declines and deformities [New Window]
Amphibian population declines and deformities due to various causes including land use change, viruses, and fungi. Links to USGS press releases, answers to FAQs (HTML and PDF versions) and photos with downloadable files.
Amphibian malformation and decline [New Window]
Frog malformation studies at the USGS National Wildlife Health Center in Madison, Wisconsin to document scope and to determine the causes of the observed malformations.
Amphibians & reptiles of the southeastern United States and the U.S. Virgin Islands [New Window]
Links to information on species of frogs, toads, and salamanders located in the southeastern United States and the U.S. Virgin Islands, with information on appearance, habitats, calls, and status, plus photos, glossary, and provisional data.
PDF Amphibians of Olympic National Park [New Window]
Fact sheet (PDF format) on amphibians in Olympic National Park and overview of the habitat, the decline in populations, and rare amphibians in the Pacific Northwest including the giant salamander and tailed frog.
Apoidea -- Bees and Sphecid Wasps [New Window]
Guide to the identification, biology, and ecology of bees and sphecid wasps, mostly in eastern North America.
Arctic Refuge coastal plain terrestrial wildlife research summaries [New Window]
Updated summaries of research in the Arctic National Wildlife Refuge, Alaska, on caribou, muskoxen, predators (grizzly bears, wolves, golden eagles), polar bears, snow geese and their wildlife habitats with maps of land-cover and vegetation.
Atlas of the spawning and nursery areas of Great Lakes fishes [New Window]
Atlas recording spawning and nursery areas of fish in the Great Lakes and associated rivers listed by area and then by species. A 14-volume atlas in PDF format. Published in 1982 by the U.S. Fish and Wildlife Service.
Avian Influenza: Information and on-going research at the USGS Alaska Science Center [New Window]
Maps and information about potential spread of avian influenza in migratory birds in Alaska. Includes descriptions and photos of the waterfowl that are being monitored.
PDF Avian influenza (in Field manual of wildlife diseases) [New Window]
Chapter 22 from "Field manual of wildlife diseases" providing basic information about avian influenza viruses.
Avian influenza news and disease information [New Window]
News regarding US efforts to monitor the spread of highly pathogenic avian influenza, with links to bulletins, FAQ list, field guides, and other resources.
Bat research in California [New Window]
Brief review of bat research in the San Francisco Bay area and southern California providing land managers with information on the occurrence and status of bat species with links to bat inventories for California and related material.
PDF Beyond the Golden Gate--oceanography, geology, biology, and environmental issues in the Gulf of the Farallones [New Window]
A geologic and oceanographic study of the waters and Continental Shelf of Gulf of the Farallones adjacent to the San Francisco Bay region. The results of the study provide a scientific basis to evaluate and monitor human impact on the marine environment.
Biochemistry/Physiology Branch, Columbia Environmental Research Center (CERC) [New Window]
Homepage for the Biochemistry and Physiology Branch in Columbia, MO, which develops analytical techniques (cell bioassay/immunoassay) on toxicity related to fish and wildlife; and conducts research in microbiology and physiology.
Bird Banding Laboratory: the North American Bird Banding Program [New Window]
Bird banding is used to study the movement, survival and behavior of birds. The Bird Banding Laboratory Site has links to the value, procedure and history of bird banding, how to report bird bands (English & Spanish), and resources for birders.
Bird Conservation Node [New Window]
The Bird Conservation Node facilitates rapid access to North American bird population and habitat data maintained by a broad coalition of Federal, state, and non-governmental partners in conservation. Includes life history, range, and habitats.
Bird Point Count Database [New Window]
Perform custom searches for bird count and bird habitat data or enter your bird count and vegetation data.
Bird checklists of the United States [New Window]
Geographical access to multiple bird checklists developed by others that indicate the seasonal occurrence of birds in a given area. A Record Documentation Form to document supporting details of rare bird observations is also available.
PDF Born of fire: restoring sagebrush steppe [New Window]
USGS Forest and Rangeland Ecosystem Science Center: fact sheet in Adobe PDF about the studies to restore sagebrush steppe
Breeding Bird Atlas manager [New Window]
Data management system for Breeding Bird Atlas projects in Maryland and the District of Columbia and in Vermont.
PDF Bryophytes and lichens, small but indispensable forest dwellers [New Window]
Description of bryophytes (mosses, liverworts, and hornworts) and lichens (dual organisms of a fungus and an alga or a cyanobacterium) that are part of forest ecosystems in the Pacific Northwest with information on habitat and conservation.
PDF Buck Island Reef National Monument Sea Turtle Research Program: Sea turtle nesting research & monitoring protocols manual [New Window]
Manual for research program on the nesting habits of sea turtles of the Virgin Islands, with descriptions of species, nesting behavior, observation methods, record keeping, tagging, and tissue sample collection. (PDF file, 121 pp.)
Burrowing owl winter ecology and use of artificial burrows in South Texas [New Window]
Experimental use of artificial burrows in south Texas to help in conservation of the migratory burrowing owls (Athene cunicularia) that breed in dry grasslands using animal burrows.
Butterflies and moths of North America [New Window]
Information on species of butterflies in North America with photos, checklists, distribution maps, aids to identification, and references.
Chronic Wasting Disease [New Window]
Information on National Wildlife Center research on Chronic Wasting Disease, a disease affecting the nervous system of elk, white-tailed deer and mule deer.
Coastal and Marine Geology Program [New Window]
Home page for Coastal and Marine Geology with links to topics of interest (sea level change, erosion, corals, pollution, sonar mapping, and others), Sound Waves monthly newsletter, field centers, regions of interest, and subject search system.
Columbia Environmental Research Center [New Window]
Website for the Columbia Environmental Research Center with links to staff, publications, databases, field stations, and projects including those on the Rio Grande, burrowing owls, sea turtles, and geospatial technology.
Contaminant exposure and effects--terrestrial vertebrates (CEE-TV) database [New Window]
The information provided in the CEE-TV database profiles available geo-referenced information on contaminant exposure and effects in terrestrial vertebrates along the U. S. coasts. The database utilizes Microsoft's Access 2000 for Windows.
Conte Anadromous Fish Laboratory [New Window]
Describes the Conte Anadromous Fish Laboratory of the Leetown Science Center, which performs research directed towards restoration and protection of anadromous fish with lists of research projects and facilities.
Contributions of the Conservation Reserve Program to populations of breeding birds in North Dakota [New Window]
Assessment of the importance of the Conservation Reserve Program in preventing the decline of grassland breeding birds by preserving grassland habitats in North Dakota. Published as Wilson Bulletin v. 107 no. 4, pp. 709-718 (1995).
Coral mortality and African dust [New Window]
Report with mini-movie and photos on the hypothesis that the atmospheric transport of dust arising from the desertification in northern Africa led to algal infestation of corals, coral diseases, and the near extinction of associated sea urchins.
Cryptobiotic soils: holding the place in place [New Window]
Describes biological soil crusts, with special reference to their role in resisting soil erosion, improving soil fertility, and increasing water infiltration in the deserts of the Colorado Plateau region.
Current research at the Patuxent Wildlife Research Center [New Window]
Search interface for current research activities at the Patuxent Wildlife Research Center, located in Maryland north of Washington DC
Desert tortoise research at Western Ecological Research Center (WERC) [New Window]
Links to research studies, conservation information, and general information on desert tortoises at the Western Ecological Research Center in Sacramento, California.
Detecting Amphibian-Killing Fungus Helps Scientists Study Amphibian Declines [New Window]
Research findings and examples of application to real problems--a new method to track down amphibian disease in the environment.
Determinants of breeding distributions of ducks [New Window]
Article from Wildlife Monographs no. 100 (1988) on the relationships of wetland habitat dynamics and life history to the breeding distributions of the various species of ducks with information on research methods and references.
Diatoms: applications [New Window]
Use of diatoms in biostratigraphy, coastal and estuarine studies, paleoceanology, paleoliminology, earthquake studies, environmental quality and forensic studies. Includes listing of USGS diatom projects and links to other diatom websites.
Dinosaurs, fact and fiction [New Window]
Online booklet with answers to frequently asked questions about dinosaurs.
Discovery for Recovery: an International Pintail Recovery Initiative (Pinsat) [New Window]
Using satellite telemetry and field studies to track pintail ducks during spring migration north from California's Central Valley plus pintails in New Mexico and Texas. Includes links to migration maps, journal, duck calls, and field methods.
Dragonflies and damselflies (Odonata) of the United States [New Window]
Manual on dragonflies and damselflies (Odonata), with links to photo thumbnails, checklists, distribution maps, and other Odonata information.
Duckdata: a bibliographic data base of North American waterfowl (Anatidae) and their wetland habitat [New Window]
Comprehensive bibliography on the ecology, conservation, and management of North American waterfowl and their wetland habitats. Facilitates searching or downloading as *.zip files and use with ProCite utility.
Early Paleozoic biochronology of the Great Basin, western United States [New Window]
Publication (PDF format) in three parts on the biostratigraphy and lithostratigraphy of the Ibexian Series in the North American Ordovician, with sections on the southern Egan Range, Nevada and the biostratigraphy of the eastern Great Basin.
Earthworms of North Dakota [New Window]
Species maps, aggregate map, earthworm diagram, species photos, and bibliography of earthworm species found in North Dakota
Education resources for paleontology [New Window]
Contacts and other sources of information for teachers, students, and others interested in paleontology with links to related USGS websites and on-line publications.
Effects of management practices on grassland birds [New Window]
Links to grassland bird species with detailed descriptions and bibliographic database in *.zip files to download in ProCite 5, Rich Text Format or ASCII formats.
Endocrine Disruption [New Window]
Curent research about endocrine disruption, the ability of environmental contaminants to affect reproductive and developmental processes.
Endocrine Disruption Found in Fish Exposed to Municipal Wastewater [New Window]
Research findings and examples of application to real problems--cause and potential effects of wastewater on fish in streams is explored.
Environmental mercury mapping, modeling, and analysis [New Window]
Online tools for mapping mercury data in the environment, with downloadable data from monitoring studies
Fact sheet: Coping with diseases at bird feeders [New Window]
Describes four communicable diseases (salmonellosis, trichomoniasis, aspergillosis, and avian pox) that can be passed from bird to bird at bird feeders and gives eight relatively easy steps that people can take to prevent or minimize disease.
Farm ponds as critical habitats for native amphibians [New Window]
Constructed farm ponds represent significant breeding, rearing, and overwintering habitat for amphibians in the Driftless Area Ecoregion of Minnesota, Wisconsin, and Iowa. Links to fact sheet, brochure, annual reports, field manual, and final report.
Field guide to amphibian larvae and eggs of Minnesota, Wisconsin, and Iowa [New Window]
Field guide to identify amphibian species from the larvae and eggs. Available to download in Adobe PDF or UMESC format.
Field guide to the reptiles and amphibians of coastal Southern California [New Window]
Field guide to identify the reptiles and amphibians of coastal Southern California with glossary and map.
Field manual of wildlife diseases: general field procedures and diseases of birds [New Window]
Manual listing field procedures for bird specimen collecting, bacterial, fungal, parasitic, and viral diseases, biotoxins, chemical toxins, common and scientific names of birds, and glossary. Manual can be downloaded or viewed in PDF format.
Field methods: capture and marking of pintails [New Window]
Method of tracking pintail ducks by capturing with rocket nets or swim-in traps and attaching telemetry devices that allow satellite tracking. Includes video of rocket nets.
Fish passage through dams in large temperate floodplain rivers: an annotated bibliography [New Window]
Report describes an electronic database of annotated citations relevant to fish passage through dams. Document may be searched using the search form or downloaded as an Endnote, Microsoft Word, or WordPerfect
Fisheries and Aquatic Resources [New Window]
The Fisheries and Aquatic Resources (FAR) node of the National Biological Information Infrastructure (NBII) provides access to fisheries and aquatic resources information via the Internet.
Fisheries projects, Alaska Science Center [New Window]
Homepage with links to Alaska research projects on fisheries by species: salmon, trout, Pacific halibut, forage fish, other fish species, and aquatic invertebrates.
Florida Integrated Science Center - Gainesville [New Window]
Florida Integrated Science Center at Gainesville is the Center for Aquatic Resource Studies in Florida and southeastern United States. Site has links to projects on manatees, contaminants, invasive plants and animals, Everglades, and aquatic resources.
Floriday Integrated Science Center - Welcome to the kid's corner [New Window]
Children's website on southern Florida aquatic biology with short movie clips of amphibians, games & puzzles, wildlife pictures, teacher resources, and more.
Flying by Night: USGS Scientists Put Technology to Work on Bats [New Window]
Short description of techniques used to monitor migration patterns and behavior of bats in New Mexico.
Forest and rangeland birds of the United States: natural history and habitat use [New Window]
Catalog of bird species common to forest and rangeland habitats in the U.S. with natural histories including taxonomic information, range, and habitat descriptions to assist land managers in resource management. Text available as a *.zip file.
Fossil groups: Vertebrates [New Window]
Information on vertebrate fossils and their use in paleontologic research in biostratigraphy, paleoclimatology, paleobiology, paleoecology, and earth history.
Free-living and parasitic copepods (including Branchiurans) of the Laurentian Great Lakes [New Window]
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.
Geologic studies of coral reef habitats: remote sensing applications to coral reef environments [New Window]
Use of remotely sensed images and spatial data to help map and study coral reef environments. Web page deals with the remote sensing work done for the Pacific Ocean component of the USGS coral reef project.
Giant Canada goose flocks in the United States [New Window]
Review of the size of breeding populations of Giant Canada geese by states in the Mississippi, Atlantic, Central, and Pacific flyways and the management problems caused by rapid increases of local breeding populations.
Grizzly bear and black bear ecology [New Window]
Summaries of research projects on black bear and grizzly ecology and ecosystems supporting the populations and bibliography of related publications.
History and ecology of mangroves in the Dry Tortugas [New Window]
Fact sheet on the historic and current conditions of mangroves of Dry Tortugas National Park, a cluster of islands and coral reefs west of Key West, Florida. Mangroves and nesting frigate bird colonies are at risk to destruction by hurricanes.
History and natural history of the Patuxent Wildlife Research Center [New Window]
Links to pages on the history and natural history of Patuxent Wildlife Research Center.
Hydrologic studies in the Upper Klamath Basin, Oregon [New Window]
Overview of Klamath ecological research and links to USGS Klamath studies on ground water, nutrients, sediment oxygen demand, and fish response to water quality, sucker ecology, publications, bibliographies, and data.
Identifying predators and fates of grassland passerine nests using miniature video cameras [New Window]
Description of the use of a miniature video-camera system deployed at nests of passerine species in North Dakota to videotape predation of eggs or nestlings by animals such as mice, ground squirrels, deer, cowbirds and others.
Identifying sources of fecal coliform bacteria in selected streams on Virginia's Total Maximum Daily Loads (TMDL) priority list [New Window]
Describes project to identify sources of fecal coliform bacteria by ribotyping to develop the use of Maximum Daily Load (TMDL) values for contaminated stream segments in Virginia.
PDF Illustrated field guide for assessing external and internal anomalies in fish [New Window]
Links to PDF version of the field guide.
Impounded river systems [New Window]
Article from Status and Trends of the Nation's Biological Resources on the serious impacts to river systems due to damming and flow regulation, and rehabilitation, monitoring, and research on such rivers.
Information on fossils and fossil collecting [New Window]
Links to general interest publications, special references, and other sources for fossil and fossil collecting information.
Insects, arachnids, & annelids [New Window]
Website for links to USGS and non-USGS websites with information on insects, arachnids, and annelids suitable for students and arranged by grade levels.
Interagency Grizzly Bear Study Team (IGBST) [New Window]
Description of research program for immediate and long-term management of grizzly bears (Ursus arctos horribilis) inhabiting the Greater Yellowstone Ecosystem. Includes links to reports in PDF format and cooperating organizations.
Invasive Species Program -- Snakeheads, aquatic invaders [New Window]
On-line version of a USGS Fact Sheet describing Snakeheads, aggressive airbreathing freshwater fishes that are not native to North America. Snakeheads are considered injurious to certain native North American fish and other aquatic wildlife.
Lake Clark sockeye salmon research projects [New Window]
Summary of research on salmon fish resources in the Lake Clark area in Alaska with links to scientific projects, Native Alaskan intern program, lake core analysis, radio telemetry, genetics, subsistence fishing, and research staff.
Long Term Resource Monitoring Program (Upper Mississippi River area): sampling data [New Window]
Downloadable data and other information about the sampling programs used in long-term monitoring of the upper Mississippi River area.
Managing habitat for grassland birds: a guide for Wisconsin [New Window]
Guide to identification, selection, and management of grassland habitats in Wisconsin to conserve the populations of grassland birds. Includes glossary, references, bird lists, graphs, and maps.
Maps of distribution and abundance of selected species of birds on uncultivated native upland grasslands and shrubsteppe in the northern Great Plains [New Window]
Links to maps of breeding distributions of bird species on grasslands and shrublands in the northern Great Plains. Maps can also be downloaded from *.zip files in HTML format.
Marine nuisance species: colonial tunicates of the genus Didemnum (a sea squirt) [New Window]
Occurrence, photos, and characteristics of some species of the colonial tunicate genus Didemnum, nuisance species that reproduce rapidly and foul marine habitats (including shellfish aquacultures and fishing grounds), ship's hulls, and maritime structure
Mayflies of the United States [New Window]
Links to checklists and species maps showing the distribution of mayflies in the United States with links to other information websites on mayflies and reference list.
Megafossils: vertebrates - technique of paleontological analyses [New Window]
Brief description of vertebrates and use of their fossil bones and footprints to aid in dating strata in biostratigraphy and to decipher past climates and recreate ancient ecosystems in paleoecology, paleoclimatology and paleobiogeography.
Mercury Concentrations in Streams Found to Go Through Daily Cycles [New Window]
Research findings and examples of application to real problems--highly variable conditions cause the production of toxic methyl mercury in the environment which accumulates in fish.
Mercury contamination of aquatic ecosystems [New Window]
Fact sheet on mercury bioaccumulation and cycling in the environment. Also available in PDF format.
Mercury in the environment [New Window]
Fact sheet on mercury and the environment, including toxic effects, risk to people and wildlife, sources of mercury, environments where methylmercury is a problem, and mercury contamination.
PDF Miscellaneous fungal diseases [New Window]
Chapter of Field Manual of Wildlife Diseases on miscellaneous fungi with information on fungal skin and subcutaneous lesions or mycosis primarily in birds.
Mollusks [New Window]
Information on mollusks and uses of the identification of fossil mollusks in the fields of biostratigraphy, geochronology, paleocoeanography, paleoecology and ecosystems history. Links to experts and related USGS projects.
Monitoring grizzly bear populations using DNA [New Window]
Description of project monitoring the status of Greater Glacier National Park Area's grizzly bear and black bear populations using genetic techniques on DNA from bear hair or scats without handling bears, with photos and discussion of methods.
Moths of North America [New Window]
Homepage for information on moths of North America with life history and habitats, photos, checklists, distribution maps, submitting new county records, identification tips, common questions, and references.
Mountain Prairie Information Node (MPIN) [New Window]
The Mountain Prairie Information Node (MPIN) provides scientific information about natural resources on public lands in the Northern Rockies region, Greater Yellowstone ecosystem and Glacier National Park. Was the Northern Rockies Information Node.
NPElement: A database of lichen elemental concentrations in the U.S. national parks [New Window]
Database providing concentration of heavy metals, nutrients, and trace elements in 75 species of lichens sampled in 43 national park units in 24 states.
NPLichen: A database of lichens in the U.S. national parks [New Window]
Web interface for a database of documented occurrences of lichens in units of the U. S. National Park System. The records were obtained from the scientific literature, from National Park Service reports, and from selected herbaria.
National Gap Analysis Program [New Window]
Home page of the Gap Analysis Program (GAP) providing assessments of the conservation status of native vertebrate species and natural land cover types of the U.S. Links to projects, applications, status maps, and a searchable database.
National Water-Quality Assessment (NAWQA) Program: protocols for the analysis of algal samples collected [New Window]
Summary of protocols describing procedures for laboratory analysis of algae samples collected by the U.S. Geological Survey's National Water Quality Assessment Program (NAWQA). Includes full document to be downloaded in PDF format.
National Wildlife Health Center (NWHC) West Nile Virus Project [New Window]
National Wildlife Health Center study of the West Nile Virus to learn the current geographic extent, to understand how the virus moves between birds, mosquitoes, and humans, and to predict future movements of the virus.
National analysis of trace elements in ground water, streams, stream and reservoir sediment, and fish and clam tissue across the United States [New Window]
Trace elements are inorganic chemicals occurring in small amounts in nature. This web site of the National Water Quality Assessment links to U.S. data, publications, news, and other sites on trace metals, metalloids and radionuclides in water.
National assessment of mercury in aquatic ecosystems [New Window]
Overview of three research programs including determining levels of mercury at selected sites in water, sediment and fish, mercury emissions into the atmosphere, and mercury cycling in the Everglades National Park, Florida.
Nonindigenous Plants and Animals Program [New Window]
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 amphibian distribution information [New Window]
Descriptions of amphibians and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on amphibians.
Nonindigenous annelid distribution information [New Window]
Descriptions of annelids and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on annelids.
Nonindigenous aquatic species alert system [New Window]
Reports indicating locations where non-indigenous aquatic organisms have been collected. Includes RSS feed you can subscribe to.
Nonindigenous bryozoan distribution information [New Window]
Descriptions of bryozoans and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on bryozoans.
Nonindigenous coelenterate distribution information [New Window]
Descriptions of coelenterates and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on coelenterates.
Nonindigenous crustacean distribution information [New Window]
Descriptions of crustaceans and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on crustaceans.
Nonindigenous fish distribution information [New Window]
Descriptions of fishes and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on fishes.
Nonindigenous mammal distribution information [New Window]
Descriptions of mammals and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on mammals.
Nonindigenous mollusk distribution information [New Window]
Descriptions of mollusks and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on mollusks.
Nonindigenous reptile distribution information [New Window]
Descriptions of reptiles and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on reptiles.
Nonindigenous sponge distribution information [New Window]
Descriptions of sponges and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on sponges.
Nonindigenous tunicate distribution information [New Window]
Descriptions of tunicates and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on tunicates.
Nonindigenous vascular plant distribution information [New Window]
Descriptions of vascular plants and examples of the deleterious effects of nonindigenous species, with links to distribution maps, species lists and related information on vascular plants.
North American Amphibian Monitoring Program (NAAMP) [New Window]
The North American Amphibian Monitoring Program (NAAMP) is a long-term monitoring program designed to track the status and trends of frog and toad populations with links to data access, protocol, and how to volunteer as an observer.
North American Breeding Bird Survey (BBS) [New Window]
North American Breeding Bird Survey (BBS) is a cooperative program that monitors the status and trends of North American bird populations. Includes files of results, analyses, route collection maps and raw data.
Northern Divide Grizzly Bear Project [New Window]
Project to assess the grizzly bear population size, trend, and survival in the Northern Continental Divide Ecosystem (NCDE) in Montana to improve the long-term survival for this threatened species. With description, DNA identification means and photos.
Oculina Bank - geology of a deep-water coral reef habitat off Florida [New Window]
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.
Online guide to the continental Cretaceous-Tertiary boundary in the Raton basin, Colorado and New Mexico [New Window]
Field guide describing the geology and paleontology of the continental Cretaceous-Tertiary boundary in the Raton basin, Colorado and New Mexico.
PDF Operational guidelines for geological fieldwork in areas endemic for Coccidioidomycosis (Valley Fever) [New Window]
Report giving operational guidelines that will lower the risk of coccidioidomycosis (Valley fever) for individuals who work outdoors in areas where the disease is endemic.
PDF Ospreys in Oregon and the Pacific Northwest [New Window]
Fact sheet in Adobe PDF about ospreys in Oregon and the Pacific Northwest
Paleontological analyses [New Window]
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.
Patuxent Bird Identification InfoCenter [New Window]
A presentation of bird photographs, songs, identification tips, distribution maps, and life history information for North American birds, and a forum for commentary and discussion on birds.
Patuxent Fact Sheets [New Window]
Access to Patuxent Wildlife Research Center fact sheets (PDFs) providing summaries of center studies on coastal ecosystems, birds, amphibians, taxonomy and other subjects and on center activities including partners and volunteer program.
Patuxent Wildlife Research Center monitoring program [New Window]
Entry to biomonitoring projects studying the status and trends of the nation's environmental resources and programs studying amphibians and birds. Links to long-term programs, resources and references, and related links.
Patuxent bird population studies [New Window]
Links to ornithology programs at Patuxent Wildlife Research Center, Laurel, MD, including large scale survey analysis of bird populations, research tools, datasets and analyses, bird identification, and seasonal bird lists.
Patuxent plant list and herbarium collection [New Window]
List of plant specimens and photo gallery of plants in the collection of the herbarium at the Patuxent Wildlife Research Center, a reference collection of plants occurring in the area lying between Baltimore, Maryland and Washington D.C.
Platte River Program, a USGS Place-Based Studies Program [New Window]
Site for the Platte River Program in Nebraska an area that is a critical staging area for migratory waterbirds of the Central Flyway. Includes links to color-infrared aerial photos, 1938 historic aerial photos, and Cottonwood Ranch research site.
Polar Bear research at the Alaska Science Center [New Window]
Ecological studies of polar bears including population dynamics, dependence on sea ice, and tracking methods.
Pollinators [New Window]
News and references about domesticated and wild bees, butterflies, moths, birds, bats and other animals that play a crucial role in the pollination of flowering plants.
Pollinators, plants, and prosperity [New Window]
Six short news articles about ecological problems faced by pollinator species in various parts of the US. Taken from "People, Land, and Water", the newsletter of the Department of the Interior.
Potential effects of anthropogenic greenhouse gases on avian habitats and populations in the Northern Great Plains [New Window]
Report on effects of the increase of atmospheric carbon dioxide on plants and animals, especially birds, in the Great Plains including effects of carbon dioxide fertilization, ultraviolet radiation, climate change, and harmful effects on bird habitats.
Protecting the Nation's coral reefs [New Window]
Report on problems in preserving coral reef ecosystems with links to information on the interagency U.S. Coral Reef Task Force, press releases, reports, and NOAA coral reef sites.
Radio tracking manatees to assess the impact of hydrologic changes in southwest Florida [New Window]
Report on the Sirenia Project use of a radio tracking study to determine manatee movement patterns and habitat to develop ecological models to understand and predict the effects of hydrologic restoration on manatees in Southwest Florida.
Radio-tracking amphibians: lessons from implant and external attachment procedures [New Window]
Paper from Forum on Wildlife Telemetry, Snowmass Village, CO, 1997, describes technique for implanting radio-transmitters for tracking amphibians such as frogs with telemetry.
Raptor Information System (RIS) [New Window]
The Raptor Information System (RIS) is a keyword catalog of over 32,000 references about the biology and management of birds of prey. Search by author, title, keyword, year of publication, or species.
Real-time water-quality monitoring and regression analysis to estimate nutrient and bacteria concentration in Kansas streams. [New Window]
Report on the use of regression equations from measurements made by water quality monitors and analytical results of manually collected samples estimating nutrient, bacteria, and other constituent concentrations to study streams in Kansas.
Recent changes in the food web of Lake Erie - the role of phosphorus and zebra mussels [New Window]
Brief overview of the proliferation of zebra mussels and the role of phosphorus in Lake Erie with links to publications related to Lake Erie water quality.
PDF Reintroduction of whooping cranes: the ultra (light) in animal training experience [New Window]
Article on experiment to teach migration routes to birds using ultralight aircraft as a means to reintroduce a migratory flock of whooping cranes to the eastern United States.
Resources for banders [New Window]
Links to bird banding manual, banding associations, equipment and suppliers, bibliography, band size lookup, recapture database, bander services, aging and sexing birds, longevity records, Canadian atlas of bird banding and other resources.
Restoration Ecology for Southeast ecosystems [New Window]
Overview of research at the Restoration Ecology facility on sustainable restoration of South Florida's greater Everglades and coastal ecosystems. Includes links study of birds, snails, and alligators, ecological modeling, photos, and posters.
PDF SAGEMAP: a web-based spatial dataset for sage grouse and sagebrush steppe management in the Intermountain West [New Window]
Links to fact sheet describing the database of spatial information on sage grouse and sagebrush habitats.
Sago pondweed (Potamogeton pectinatus L.): a literature review [New Window]
Literature review of sago pondweed, a submersed angiosperm that attracts waterfowl, but is also a nuisance plant that clogs irrigation systems. Includes classification, distribution, habitat, physiology, management, and economics.
Salinity variation in an estuary used for oyster cultivation in southeastern North Carolina during the passover of the eye of Hurricane Bertha [New Window]
Review of a study monitoring changes in salinity in Alligator Bay, NC during a 1996 hurricane due to the influx of fresh and saltwater and the effect it would have on oyster aquaculture.
Salvinia molesta, Salvinia weevil, Salvinia minima [New Window]
Life history and identification of Salvinia species, a floating, rootless tree fern and a noxious aquatic weed. Site includes posters, instructions on submitting sightings, how to subscribe to a listserv on the weed, and a bibliography.
Scientists discover analog for extraterrestrial life in Idaho Hot Springs [New Window]
Report on a community of microscopic organisms, Archaea, found deep in an Idaho hot spring living on hydrogen and carbon dioxide that could possibly exist on other planets. Includes links to related studies, investigators, and microbiology.
Scientists examine the seas our ancestors fished to better understand today's changing oceans [New Window]
News release on study of the long-term effects of fishing to provide a framework for repairing coastal marine ecosystems that have been overfished for centuries.
Sea otter research at Western Ecological Research Center (WERC) [New Window]
Webpage on research on sea otters (Euhydra lutris) in the nearshore environment of the eastern Pacific Ocean with information on status of otters on the coast of Alaska, Washington, and California and link to fact sheet in PDF format.
Social science in natural resource management [New Window]
Describes how social scientists and natural resource managers work together to develop cooperation and public help in solving complex natural resource issues. Links to the use of public surveys in a project for black-tailed prairie dog management.
Southeastern Amphibian Research and Monitoring Initiative [New Window]
Overview of the Southeastern Amphibian Research and Monitoring Initiative, annual report, field methods and protocols, statistical design and analysis, glossary, projects, and lists of frogs, toads and salamanders.
Stoneflies of the United States [New Window]
Links to checklists and species maps showing the distribution of stoneflies in the United States with links to other information websites on stoneflies and reference list.
PDF Studies and trends of selected inland lakes of the Great Lakes Cluster National Parks [New Window]
Report on the status of the biota and ecological factors of the inland lakes of the Great Lakes Cluster Parks: Indiana Dunes, Sleeping Bear Dunes,and Pictured Rocks National Lakeshores and Isle Royale and Voyageurs National Parks. (PDF file, 321 p.)
PDF Summary and analysis of the U.S. government bat banding program [New Window]
Analysis of the program with a detailed study of the best collection of data available from it. Includes recommendations for future studies of bats.
Summary report of nonindigenous aquatic species in U.S. Fish and Wildlife Service Region 4 [New Window]
Report prepared for the U.S. Fish and Wildlife Service with descriptions of exotic aquatic species introduced in the southeast United States with information on populations, geographic distribution, and origins.
PDF Surveillance for asian H5N1 avian influenza in the United States [New Window]
General description of US government efforts to monitor the occurrence of highly pathogenic avian influenza in wild migratory birds.
Survival of adult female northern pintails in Sacramento Valley, California [New Window]
Report on the population of northern pintails between 1979 and the 1990s in Sacramento Valley, California, including methods of study including radio telemetry, causes of mortality, morphometrics, survival rates, and management implications.
Tadpoles of the United States and Canada: a tutorial and key [New Window]
Key and tutorial to identify species of tadpoles from North America with color photographs.
Tampa Bay Estuary Interactive Mapping System (IMS) [New Window]
Interactive Mapping Service (IMS) is an Internet based Geographic Information System designed to provide users with online mapping capability of habitats, land use and land cover, and seagrass for areas of Tampa Bay.
The Virtual Fish: Semipermeable Membrane Device (SPMD) basics [New Window]
Paper by Duane Chapman for the 6th International SPMD Workshop and Symposium on a semipermeable membrane device (SPMD) measures contaminants in water by mimicking the parts of fish that cause concentration of specific chemicals in fish tissues.
PDF The avian influenza H5N1 threat [New Window]
Describes highly pathogenic avian influenza and explains why this wildlife disease is of concern to health scientists and the public. Diagram shows potential pathways by which the disease could be transmitted to other animals, including humans.
The challenges of capturing and tagging manatees along west coastal Florida [New Window]
Description of method of capturing and tagging manatees in western Florida for tracking by satellite telemetry. Presented at a forum on telemetry.
The whooping crane report [New Window]
Report on the captive breeding program at Patuxent Wildlife Research Center to help save endangered whooping cranes. Site links to natural history information on whooping cranes, why they are endangered, cool facts on cranes, and a photo gallery.
Tiger beetles of the United States [New Window]
Links to checklists and species maps showing the distribution of tiger beetles in the United States with links to photographs, other information websites on invertebrates, and reference list.
Tools for learning about birds [New Window]
Links to pictures, songs and identification of birds of the United States, Canada, and Central America plus seasonal bird maps and a quiz on birds.
PDF Toxicity and bioavailability of metals in the Missouri River adjacent to a lead refinery [New Window]
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.
USGS-National Park Service (NPS) Vegetation Mapping Program [New Window]
The USGS-NPS Vegetation Mapping Program is a cooperative effort with the National Park Service (NPS) to classify, describe, and map vegetation communities in over 270 U.S. national park units with links to overview, standards, products, and applications.
Upper Midwest Environmental Science Center (UMESC) [New Window]
Homepage for Upper Midwest Environmental Science Center, LaCrosse, Wisconsin, with links to data library, geographical search, science programs, partnerships, long-term resource monitoring program, reports and publications, and education.
Upper Mississippi River fish and macroinvertebrate data [New Window]
Interactive databases providing detailed information on fish and macroinvertebrate abundance and diversity over time in pools of the upper Mississippi River basin.
Using strip-transect aerial surveys to estimate manatee abundance in the Ten Thousand Islands region of southwest Florida [New Window]
Report on use of strip-transect aerial surveys to obtain minimum manatee counts and distribution information in area of Ten Thousand Islands, Florida, with maps, diagrams, and information on method and results.
Vegetation sampling and classification of Great Smoky Mountains National Park (Cades Cove and Mount Le Conte quadrangles): final report [New Window]
Report of a pilot study to classify vegetation communities in parts of the Smoky Mountains National Park by sampling vegetation in selected areas with information on field methods and data analysis and lists of communities identified.
Walrus research at the Alaska Science Center [New Window]
Review of current research on stock assessment of the Pacific walrus in the Chukchi and Bering Seas and interactions between walruses and their environment with links to walrus taxonomy, distribution, behavior, and relation to man
Water resources of Virginia - Total Maximum Daily Load [New Window]
Description of a project to develop watershed models that can be used to track sources of fecal coliform bacteria by assigning Total Maximum Daily Loads (TMDL) to three stream segments in Virginia.
Waterfowl identification in the Central Flyway [New Window]
Identification manual with colored photos of species of puddle ducks, diving ducks, geese, mergansers, swans, cranes, herons, egrets, pelicans and cormorants. Also includes information on ordering print copy and downloading as *.zip file.
West Nile Virus maps [New Window]
Map showing which states are positive for West Nile Virus. Clicking on state outline links to state West Nile Virus or public health website. Site also has links to other West Nile Virus maps.
West Nile virus [New Window]
Informational site provides links to data, news updates, information, and maps related to outbreaks of the West Nile virus and mosquito-borne encephalitis in the United States.
Western Fisheries Research Center (WFRC) [New Window]
Brief description of the Western Fisheries Research Center in Seattle devoted to research on fish populations and aquatic ecosystems of the West. Links to research programs, laboratory locations, publications, and map services.
Whales and walrus: tillers of the seafloor [New Window]
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.
What's new at the Patuxent Wildlife Research Center (Maryland) [New Window]
Links to news articles on scientific activities at Patuxent Wildlife Research Center, located in Maryland, north of Washington DC.


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