Multi-celled organisms of the kingdom Animalia with eukaryotic cells (cells with distinct nuclei containing genetic material and bounded by thin membranes) that are heterotrophic (obtaining energy from organic substances produced by other organisms).
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.
Invasive lionfish use a diversity of habitats in Florida [ More info] Describes the diversity of habitat types in which invasive lionfish have been reported within Florida's coastal waters, based on lionfish sightings recored in our Nonindigenous Aquatic Species database.
Invasive Species Program -- Snakeheads, aquatic invaders [ More info] Snakeheads, aggressive airbreathing freshwater fishes that are not native to North America, are considered injurious to certain native North American fish and other aquatic wildlife.
Investigating White-Nose Syndrome in Bats [ More info] Explains the nature and history of this fungal infection that is killing large numbers of bats in the northeast US.
Is science in danger of sanctifying the wolf? [ More info] What does it mean that beneficial trophic cascades (side effects) of wolf population restoration are questioned by recent research?
Lead Poisoning in Wild Birds [ More info] Even though lead usage has declined due to environmental awareness and regulation, several human sources of lead continue to affect birds. Hunting ammunition and fishing gear are ingested by the birds, with toxic effects.
Long Term Resource Monitoring Program (Upper Mississippi River area): sampling data [ More info] Downloadable data and other information about the sampling programs used in long-term monitoring of the upper Mississippi River area.
Management and Research Applications of Long-range Surveillance Radar Data for Birds, Bats, and Flying Insects [ More info] Explains how radar can be used to measure the density, speed, direction, altitude, and location of flocks of animals in flight.
Managing habitat for grassland birds: a guide for Wisconsin [ More info] 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 [ More info] 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.
Alphabetical Index of Topics
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