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Organisms
Living individuals that grow, reproduce, and die.
Subtopics:
Algae (16 items)
Animals (259 items)
Archaea (2 items)
Bacteria (12 items)
Fungi (5 items)
Lichens (5 items)
Plants (organisms) (24 items)
Protists (5 items)
Viruses (5 items)
Related topics:
Results 1 - 96 of 302 listed alphabetically [list by similarity]
PDF A Neotropical Migrant Bird's Dilemma - Where to Stop for a Good Meal [More info]
Studying 28 species of warblers, flycatchers, tanagers, and vireos, we find the birds relied on the flowering of honey mesquite to detect the availability of insects they eat.
PDF Acid rain effects on Adirondack streams - results from the 2003-05 western Adirondack stream survey (the WASS Project) [More info]
Acidified soils caused toxic aluminum in 66 percent of 565 assessed streams. Diatoms and aquatic macroinvertebrates were moderately to severely affected. These effects have not improved in areas surveyed in the early 1980s
Alaska Science Center - Biological Science Office [More info]
Research on birds, mammals, ecosystems and habitats, fish and fisheries in Alaska
PDF Algal toxins [More info]
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 [More info]
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 [More info]
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 [More info]
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.
PDF Amphibian monitoring in the Atchafalaya Basin [More info]
They're abundant in this area, but hard to count reliably. We outline a procedure for estimating the population sizes so that we can determine whether they're increasing or dwindling. We must both listen for their calls and visually confirm them.
Amphibians & reptiles of the southeastern United States and the U.S. Virgin Islands [More info]
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 [More info]
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.
PDF An experiment to control nonnative fish in the Colorado River, Grand Canyon, Arizona [More info]
We removed non-native fish from a section of the river and the endangered native species humpback chub increased in abundance. But it is not yet clear that decreased competition explains the rebound in population.
An online database for IHN virus in Pacific Salmonid fish: MEAP-IHNV [More info]
Background information and genetic sequencing data for more than 1,000 individual field isolates of the fish virus Infectious Hematopoietic Necrosis Virus (IHNV) collected in western North America from 1966 to the present, updated annually.
PDF Anticipated effects of development on habitat fragmentation and movement of mammals into and out of the Schoodic District, Acadia National Park, Maine [More info]
Wildlife you see in a national park or other reserved area don't know about the park boundary. Bobcat, martens, mink, and moose need different types of living space and habitat. Development outside the park affects their ability to inhabit the park.
Apoidea -- Bees and Sphecid Wasps [More info]
Guide to the identification, biology, and ecology of bees and sphecid wasps, mostly in eastern North America.
AquaPathogen X--A template database for tracking field isolates of aquatic pathogens [More info]
A template database for recording information on individual isolates of aquatic pathogens affecting a variety of aquatic species such as fish or shellfish. Tracks collection, history, geography, gene sequence, and diagnostic info. Uses FileMaker Pro.
Arctic Refuge coastal plain terrestrial wildlife research summaries [More info]
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.
Assessment of Contaminant Exposure and Effects on Ospreys Nesting along the Lower Duwamish River, Washington, 2006-07 [More info]
PDF Assessment of least tern and piping plover habitats on the Missouri River using remote sensing [More info]
Analysis and modeling of multispectral imagery helps to predict the suitability of sand bars for nesting of these migratory birds.
Atlas of the spawning and nursery areas of Great Lakes fishes [More info]
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 [More info]
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 conservation in the Prairie Pothole Region, Northern Great Plains-Understanding the links between climate, ecosystem processes, wetland management, and bird communities [More info]
Small wetlands in this large area have hosted migratory birds for a long time, but with changes in agricultural practice and regional climate those habitats may not remain hospitable to the wild populations.
PDF Avian influenza (in Field manual of wildlife diseases) [More info]
Chapter 22 from the field manual of wildlife diseases providing basic information about avian influenza viruses.
Avian influenza news and disease information [More info]
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 [More info]
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 Bats and wind energy-A literature synthesis and annotated bibliography [More info]
A literature synthesis and annotated bibliography focus on North America and on refereed journals. Additional references include a selection of citations on bat ecology, international research on bats and wind energy, and unpublished reports.
PDF Bats of Ouray National Wildlife Refuge [More info]
Detailed information on capture-and-release surveying as well as acoustic monitoring of bats indicates prevalence of various species and, for the captured specimens, physiological characteristics.
PDF Bear Spray Safety Program [More info]
Explains for USGS employees and volunteers how best to defend against bear attacks when conducting field studies.
PDF Beyond the Golden Gate--oceanography, geology, biology, and environmental issues in the Gulf of the Farallones [More info]
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) [More info]
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.
Biological resource status and trends: Amphibians [More info]
Information concerning status and trends of biological resources, focusing on Amphibians
Biological resource status and trends: Bats [More info]
Information concerning status and trends of biological resources, focusing on bats
Biological resource status and trends: Birds [More info]
Information concerning status and trends of biological resources, focusing on Birds
Biological resource status and trends: Carnivores [More info]
Information concerning status and trends of biological resources, focusing on carnivores
Biological resource status and trends: Coleoptera (beetles) [More info]
Information concerning status and trends of biological resources, focusing on Coleoptera (beetles)
Biological resource status and trends: Contaminants in animals [More info]
Information concerning status and trends of biological resources, focusing on contaminants in animals
Biological resource status and trends: Contaminants in plants [More info]
Information concerning status and trends of biological resources, focusing on contaminants in plants
Biological resource status and trends: Corals and sponges [More info]
Information concerning status and trends of biological resources, focusing on corals and sponges
Biological resource status and trends: Crocodilians [More info]
Information concerning status and trends of biological resources, focusing on crocodilians including alligators
Biological resource status and trends: Crustaceans [More info]
Information concerning status and trends of biological resources, focusing on Crustaceans
Biological resource status and trends: Diadromous fish [More info]
Information concerning status and trends of biological resources, focusing on diadromous fish
Biological resource status and trends: Diptera (flies) [More info]
Information concerning status and trends of biological resources, focusing on Diptera (flies)
Biological resource status and trends: Ephemeroptera (mayflies) [More info]
Information concerning status and trends of biological resources, focusing on Ephemeroptera (mayflies)
Biological resource status and trends: Fish [More info]
Information concerning status and trends of biological resources, focusing on Fish
Biological resource status and trends: Forbs [More info]
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 [More info]
Information concerning status and trends of biological resources, focusing on fowl (birds)
Biological resource status and trends: Freshwater fish [More info]
Information concerning status and trends of biological resources, focusing on freshwater fish
Biological resource status and trends: Frogs and toads [More info]
Information concerning status and trends of biological resources, focusing on frogs and toads
Biological resource status and trends: Grasses [More info]
Information concerning status and trends of biological resources, focusing on grasses
Biological resource status and trends: Hymenoptera (bees and wasps) [More info]
Information concerning status and trends of biological resources, focusing on Hymenoptera (bees and wasps)
Biological resource status and trends: Insects [More info]
Information concerning status and trends of biological resources, focusing on Insects
Biological resource status and trends: Lepidoptera (butterflies and moths) [More info]
Information concerning status and trends of biological resources, focusing on Lepidoptera (butterflies and moths)
Biological resource status and trends: Lizards [More info]
Information concerning status and trends of biological resources, focusing on lizards
Biological resource status and trends: Mammals [More info]
Information concerning status and trends of biological resources, focusing on Mammals
Biological resource status and trends: Marine mammals [More info]
Information concerning status and trends of biological resources, focusing on marine mammals
Biological resource status and trends: Microbes [More info]
Information concerning status and trends of biological resources, focusing on Microbes
Biological resource status and trends: Mollusks [More info]
Information concerning status and trends of biological resources, focusing on Mollusks
Biological resource status and trends: Nonvascular plants [More info]
Information concerning status and trends of biological resources, focusing on nonvascular plants such as mosses and algae
Biological resource status and trends: Other invertebrates [More info]
Information concerning status and trends of biological resources, focusing on other invertebrates
Biological resource status and trends: Passerines [More info]
Information concerning status and trends of biological resources, focusing on passerines (birds)
Biological resource status and trends: Plants [More info]
Information concerning status and trends of biological resources, focusing on Plants
Biological resource status and trends: Raptors [More info]
Information concerning status and trends of biological resources, focusing on raptors (birds)
Biological resource status and trends: Reptiles [More info]
Information concerning status and trends of biological resources, focusing on Reptiles
Biological resource status and trends: Rodents and rabbits [More info]
Information concerning status and trends of biological resources, focusing on Rodents and rabbits
Biological resource status and trends: Salamanders [More info]
Information concerning status and trends of biological resources, focusing on salamanders
Biological resource status and trends: Saltwater fish [More info]
Information concerning status and trends of biological resources, focusing on saltwater fish
Biological resource status and trends: Shrubs [More info]
Information concerning status and trends of biological resources, focusing on shrubs
Biological resource status and trends: Snakes [More info]
Information concerning status and trends of biological resources, focusing on snakes
Biological resource status and trends: Taxa/Organisms [More info]
Information concerning status and trends of biological resources, focusing on Taxa/Organisms
Biological resource status and trends: Trees [More info]
Information concerning status and trends of biological resources, focusing on trees
Biological resource status and trends: Turtles [More info]
Information concerning status and trends of biological resources, focusing on turtles
Biological resource status and trends: Ungulates (hoofed mammals) [More info]
Information concerning status and trends of biological resources, focusing on Ungulates (hoofed mammals)
Biological resource status and trends: Waterfowl and shorebirds [More info]
Information concerning status and trends of biological resources, focusing on waterfowl and shorebirds
Biological soil crusts [More info]
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 [More info]
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.
Biomarker Benchmarks: Reproductive and Endocrine Biomarkers in Largemouth Bass and Common Carp from United States Waters [More info]
Describes a national reconnaissance study of reproductive health in two species of fish across the US. More than 2,200 common carp and 650 largemouth bass were collected at 119 rivers and streams.
Bird Banding Laboratory: the North American Bird Banding Program [More info]
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 Point Count Database [More info]
Perform custom searches for bird count and bird habitat data or enter your bird count and vegetation data.
Bird checklists of the United States [More info]
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 [More info]
USGS Forest and Rangeland Ecosystem Science Center: fact sheet in Adobe PDF about the studies to restore sagebrush steppe
Breeding Bird Explorer [More info]
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 [More info]
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 [More info]
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.)
PDF Buffelgrass-Integrated modeling of an invasive plant [More info]
Buffelgrass (Pennisetum ciliare) poses a problem in the deserts of the United States, growing in dense stands and introducing a wildfire risk in an ecosystem not adapted to fire. This report explains what we are doing to help mitigate its effects.
PDF Burrowing owls winter in south Texas [More info]
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 [More info]
Information on species of butterflies in North America with photos, checklists, distribution maps, aids to identification, and references.
PDF Catalogue of Polar Bear (Ursus maritimus) Maternal Den Locations in the Beaufort Sea and Neighboring Regions, Alaska, 1910-2010 [More info]
Approximate locations of 392 polar bear maternal dens found between 1910 and 2010, along with the method and year of discovery.
Changing Arctic ecosystems-Research to understand and project changes in marine and terrestrial ecosystems of the Arctic [More info]
Three themes of ongoing research: forecasting polar bear and walrus population response to changing marine ecosystems; measuring wildlife population changes in the Arctic coastal plain, and wildlife communities in the boreal-Arctic transition zone.
PDF Characterization of Fish Creek, Teton County, Wyoming, 2004-08 [More info]
Preliminary results of hydrologic and biological sampling confirm anecdotal reports that this stream shows unusually high algal growth due to elevated nutrients, probably from groundwater.
Chronic Wasting Disease [More info]
Information on National Wildlife Center research on Chronic Wasting Disease, a disease affecting the nervous system of elk, white-tailed deer and mule deer.
Climatic changes and effect on wild sheep habitat [More info]
Preliminary results indicate significant changes in Dall sheep diet accompanying vegetation changes and upslope retreat of glaciers.
Coastal and Marine Geology Program [More info]
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.
Coastal ecosystem responses to influences from land and sea, coastal and ocean science [More info]
Changes in both the ocean and coastal ecosystems may have negative effects on sea otter populations in the coastal Northwest and Alaska. A study underway will examine these factors and the overall health of sea otter populations.
Columbia Environmental Research Center [More info]
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.
PDF Concentrations of mercury and other metals in black bass (Micropterus spp.) from Whiskeytown Lake, Shasta County, California, 2005 [More info]
Historical gold mining has left this area susceptible to mercury contamination. Elevated concentrations of mercury in the fish are well documented here.
Contaminant exposure and effects--terrestrial vertebrates (CEE-TV) database [More info]
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 Branch [More info]
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.
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