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Invertebrates
Animals having no backbone or spinal column, such as insects, mollusks, crustaceans, worms, and similar organisms.
Subtopics:
Arthropods (32 items)
Bryozoans and brachiopods (1 items)
Coelenterates (13 items)
Conodonts (2 items)
Echinoderms (2 items)
Mollusks (14 items)
Sponges (2 items)
Tunicates (2 items)
Worms (2 items)
Related topics:


Results 21 - 30 of 63 listed alphabetically [list by similarity]
Earthworms of North Dakota [More info]
Species maps, aggregate map, earthworm diagram, species photos, and bibliography of earthworm species found in North Dakota
PDF Effects of Ocean Acidification and Sea-Level Rise on Coral Reefs [More info]
By measuring the current and historical growth rates of coral skeletons, and using field experiments, we intend to find out whether rising atmospheric CO2 and rising sea levels will cause coral reefs to erode and cease to function.
PDF Environmental Monitoring and Assessment Program Western Pilot Project - Conditions of North Dakota Perennial Streams for Water Chemistry and Mercury in Fish Tissue, 2000-2003 [More info]
Sixty-five sampling sites, selected by a statistical design to represent lengths of perennial streams in North Dakota, were chosen to be sampled for water chemistry and mercury in fish tissue to establish unbiased baseline data.
PDF Estuaries of the Greater Everglades Ecosystem: Laboratories of Long-term Change [More info]
Explains how we reconstruct past environmental conditions, especially salinity, to help guide ecosystem restoration efforts in this area.
EverView Data Viewer [More info]
Software and data to help people model the likely response of populations of organisms to various strategies that might be employed to remedy the effects of damaged ecosystems.
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.
PDF Gulf of Mexico deep-sea coral ecosystem studies, 2008-2011 [More info]
Deep-sea corals, also known as cold-water corals, have become a topic of interest due to conservation concerns over the impacts of trawling, exploration for oil and gas, and climate change.
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.
Marine nuisance species: colonial tunicates of the genus Didemnum (a sea squirt) [More info]
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 [More info]
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.
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