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Systematics and taxonomy
Study of the identification, naming, and classification of organisms.
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Results 1 - 15 of 15 listed by similarity [list alphabetically]
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
Apoidea -- Bees and Sphecid Wasps [More info]
Guide to the identification, biology, and ecology of bees and sphecid wasps, mostly in eastern North America.
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.
Earthworms of North Dakota [More info]
Species maps, aggregate map, earthworm diagram, species photos, and bibliography of earthworm species found in North Dakota
Field guide to amphibian larvae and eggs of Minnesota, Wisconsin, and Iowa [More info]
Field guide to identify amphibian species from the larvae and eggs. Available to download in Adobe PDF or UMESC format.
Free-living and parasitic copepods (including Branchiurans) of the Laurentian Great Lakes [More info]
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.
Invasive crayfish in the Pacific Northwest [More info]
These organisms have negative effects on local ecosystems, but we don't yet know how extensively they have spread. Here is a key to help people identify them.
Major fossil groups [More info]
Discusses how fossils can be grouped and studied by size, habitat type, and phylogenetic groups. Shows how fossil classification groups are used to solve geologic problems at the USGS.
Patuxent bird population studies [More info]
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 [More info]
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.
PDF Southwest Caves Reveal New Forms of Life [More info]
These lightless and nutrient-poor natural systems are home to life forms found nowhere else on Earth. Three new genera and at least 15 new species have been discovered here.
Tadpoles of the United States and Canada: a tutorial and key [More info]
Key and tutorial to identify species of tadpoles from North America with color photographs.
Vegetation sampling and classification of Great Smoky Mountains National Park (Cades Cove and Mount Le Conte quadrangles): final report [More info]
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 [More info]
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
Waterfowl identification in the Central Flyway [More info]
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.
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