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  • All fields: Population
(1047 results)



Display: 20

    • This fish is trouble!

    • Adults; Aquatic environments; Biologists (USFWS); Boating; Boats; Ecosystem recovery; Emblems; Employees (USFWS); Environmental quality; Fishes; Fishing; Habitat conservation; Habitat fragmentation; Habitat restoration; Management; Personnel;...
    • A Big Muddy National Wildlife Refuge employee holds an Asian carp, (Invasive species), for the camera.
    • The ones that did not get away

    • Adults; Aquatic environments; Biologists (USFWS); Boating; Boats; Ecosystem recovery; Emblems; Employees (USFWS); Environmental quality; Fishes; Fishing; Habitat conservation; Habitat fragmentation; Habitat restoration; Management; Personnel;...
    • Big Muddy National Wildlife Refuge employees hold an Asian carp, (Invasive species), for the camera.
    • The fish are jumping

    • Adults; Aquatic environments; Biologists (USFWS); Boating; Boats; Ecosystem recovery; Emblems; Employees (USFWS); Environmental quality; Fishes; Fishing; Habitat conservation; Habitat fragmentation; Habitat restoration; Management; Personnel;...
    • These Big Muddy National Wildlife Refuge employees electrofish for the Asian carp, (Invasive species).
    • Tree catches fish

    • Adults; Aquatic environments; Biologists (USFWS); Boating; Boats; Ecosystem recovery; Emblems; Employees (USFWS); Environmental quality; Fishes; Fishing; Habitat conservation; Habitat fragmentation; Habitat restoration; Management; Personnel;...
    • This Asian carp, (Invasive species), jumps up to the trees to escape the long arm of the biologists.
    • Fish flying in formation.

    • Adults; Aquatic environments; Biologists (USFWS); Boating; Boats; Ecosystem recovery; Employees (USFWS); Fishes; Fishing; Personnel; Population control; Resource management; Service patch; Uniforms; Wildlife refuges; Work of the Service; Invasive...
    • These Asian carp seem to be flying in formation as they jump out of the water to flee from the electrofishing.
    • Jim Voelzer oral history transcript

    • Aircraft; Aviation; Biologists (USFWS); Employees (USFWS); Biography; History; Surveying; Management; Migratory birds; Bird banding; Waterfowl;
    • Jim Voelzer oral history transcript as conducted by John Cornely.
    • Aleutian Cacklling Goose Capture and Translocation,1978 - 1991 (Album)

    • AMNWR; Alaska Maritime Wildlife Refuge; Endangered species; Aleutian Cackling Goose; Aleutian Canada Goose; Biological research; Buldir Island; Aleutian Islands; Employees (USFWS)
    • AMNWR biologists worked over an extended period to recover the population of aleutian Cackling goose from endangered to its delisting in 2001. This album pictures the landscape, some of the hardships and activities of these hardy biologists
    • Phil Pister Desert Fishes Council

    • Aquatic animals; Aquatic environments; Environmental education; Fisheries management; Fishes; Fish hatcheries; Habitat conservation; Podcast; Public Lecture;
    • Phil Pister retired in February 1990 following 38 years as a fishery biologist with the California Department of Fish and Game. He studied wildlife conservation and zoology under A. Starker Leopold at the University of California (Berkeley) and...
    • Wyoming toads and cattle: at home on the range

    • Aquatic animals; Biologists (USFWS); Extinctions; Endangered species; Amphibians;
    • Biologists feared that the Wyoming toad was extinct until 1987 when a fisherman discovered a population at Mortenson Lake on Swanson’s land. The discovery created excitement about a chance to save the species and its habitat, and it led Swanson...
    • Ecology of eelgrash meadows in the Pacific Northwest: a community Profile

    • Aquatic environments; Estuarine environments; Biologists (USFWS); Grasses;
    • Nearly half the population of the United States lives adjacent to coastal waters or to the shores of the Great Lakes. The recreational and economic pressures that accompany this residential pattern are invariably exerted on the nearshore coastal...
    • H.A. Hochbaum oral history transcript

    • Art; Biography; History; Waterfowl; Museums;
    • H.A. Hochbaum oral history interview as conducted by an unknown interviewer. Mr. Hochbaum talks about decoy carvings, Florence and Lee Jefferies, Dioramas, model trains, James F. Bell, duck populations, mallards, canvasbacks, and redheads.
    • Endangered species coloring book

    • Art; Environmental education; Endangered species; Illustrations;
    • This is a children's coloring book of various endangered species. It provides images of each species for coloring, as well as educational information on the species. The animals included are: Bald Eagle, California red-legged frog Karner Blue...

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