Population Density

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Displaying 483 data points

Blunt-nosed Leopard Lizard (Gambelia sila formerly Gambelia silus)

Citation:

Revised blunt-nosed leopard lizard recovery plan

Author(s)
United States Fish and Wildlife Service
Pages
95
Publisher
United States Fish and Wildlife Service, Region 1
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Population Density review reported densities range from 0.10 - 3.4 lizards/acre (from unpublished reports) Not Reported Not Reported Not Reported Exposure Factor Datasets

Brush Rabbit (Sylvilagus bachmani)

Citation:

Home range and mobility of brush rabbits in California chaparral

Author(s)
Connell, Joseph H.
Pages
392-405
Year
Volume
35
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type
Population Density 0.9 #/acre Both Male and Female Both Adults and Juveniles 10 Berkeley Hills Exposure Factor Datasets
Population Density 2.3 #/acre Both Male and Female Both Adults and Juveniles 26 Berkeley Hills Exposure Factor Datasets

California Clapper Rail (Rallus longirostris ssp. obsoletus)

Citation:

Status and distribution of the California clapper rail (Rallus longirostris obsoletus)

Author(s)
Gill, Robert Jr.
Pages
36-49
Year
Issue
1
Volume
65
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density range of mean densities birds/ha Both Male and Female Adult 5 sites San Francisco Bay Exposure Factor Datasets Alameda, Marin, San Mateo, Santa Clara, Sonoma

San Joaquin Antelope Squirrel (Ammospermophilus nelsoni)

Citation:

Population density, census methods, habitat relationships, and home range of the San Joaquin Antelope squirrel, 1988-1989

Author(s)
Harris, John H. and Danielle M. Stearns
Pages
37
Publisher
California Department of Fish and Game, Nongame Bird and Mammal Section
Year
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density #/ha Both Male and Female Both Adults and Juveniles Not Reported Elkhorn Plain Ecological Reserve Exposure Factor Datasets San Luis Obispo

Bushtit (Psaltriparus minumus)

Citation:

A field test of the variable circular-plot censusing technique in a California coastal scrub breeding bird community

Author(s)
DeSante, David F.
Pages
177-185
Publisher
Cooper Ornithological Society; Studies in Avian Biology No. 6
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties Condition
Population Density 2.2 breeding density estimate birds/36 ha Male Adult 6 territories Palomarin Field Station, Point Reyes Bird Observatory Exposure Factor Datasets Marin breeding

Least Bell's Vireo (Vireo bellii ssp. pusillus)

Citation:

Endangered status and strategies for conservation of the least Bell's vireo (Vireo bellii pusillus) in California

Author(s)
Franzreb, Kathleen E.
Pages
43-49
Year
Volume
18
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Population Density review historical and recent population data Not Reported Adult Not Reported Exposure Factor Datasets
Citation:

The least Bell's vireo in California: A de facto endangered race

Author(s)
Goldwasser, Sharon, David Gaines and Sanford R. Wilbur
Pages
742-745
Year
Issue
5
Volume
34
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density number of singing males per linear km of suitable habitat birds/km Male Adult 8 survey sites various CA locations Exposure Factor Datasets

Pacific Treefrog (Pseudacris regilla formerly Hyla regilla)

Citation:

Bullfrog (Rana catesbeiana) invasion of a California river: the role of larval competition

Author(s)
Kupferberg, Sarah J.
Pages
1736-1751
Year
Volume
78
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type California Counties Error
Population Density 16.25 #/m2 Both Male and Female Tadpole 27 quadrats Angelo Coast Range Reserve [lat., 39^o44'N; long., 123^o39'W] Exposure Factor Datasets Mendocino 7 SD

Coyote (Canis latrans)

Citation:

Behavioral ecology of coyotes on the National Elk Refuge, Jackson, Wyoming

Author(s)
Camenzind, Franz J.
Pages
267-296
Publisher
Academic Press
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Population Density 0.77 #/km2 Not Reported Pup Not Reported National Elk Refuge, Jackson Hole Exposure Factor Datasets 0.33 SD
Population Density 1.37 post-whelping population density #/km2 Not Reported Both Adults and Juveniles Not Reported National Elk Refuge, Jackson Hole Exposure Factor Datasets
Population Density peak density #/km2 Not Reported Adult Not Reported National Elk Refuge, Jackson Hole Exposure Factor Datasets
Citation:

Summer food habits and population density of coyotes, Canis latrans, in boreal forests of sutheastern Quebec

Author(s)
Samson, Claude and Michel Crete
Pages
227-233
Year
Volume
111
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Population Density range of density estimates #/10 km2 Both Male and Female Not Reported Not Reported Gaspesie Conservation Park and Chic-Chocs Game Reserve [lat., 49^o00N'; long., 66^o00' W] Exposure Factor Datasets CANADA
Citation:

Population dynamics of coyotes in central Alberta, 1964-1968

Author(s)
Nellis, Carl H. and Lloyd B. Keith
Pages
389-399
Year
Volume
40
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Population Density range of minimum and maximum densities over 3 yrs #/100 km2 Not Reported Not Reported Not Reported Rochester, Alberta Exposure Factor Datasets CANADA
Citation:

Food and population characteristics of Iowa coyotes

Author(s)
Mathwig, Herbert J.
Pages
167-189
Year
Volume
47
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 1 greatest density #/1.4 mi2 Both Male and Female Not Reported Not Reported Exposure Factor Datasets

Deer Mouse (Peromyscus maniculatus ssp. gambelii)

Citation:

Measures of the movements and popultion densities of small rodents

Author(s)
Brant, Daniel H.
Pages
105-184
Year
Volume
62
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density see citation figure of seasonal changes in density #/acre Both Male and Female Not Reported Not Reported Tilden Regional Park, Berkeley (elev. 600-1200 ft) Exposure Factor Datasets

Deer Mouse (Peromyscus maniculatus ssp. nubiterrae)

Citation:

Comparative population ecology of Peromyscus leucopus and Peromyscus maniculatus

Author(s)
Wolff, Jerry O.
Pages
1548-1555
Year
Volume
63
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density range of mean yearly densities over 3 yrs #/ha Both Male and Female Both Adults and Juveniles Not Reported Mountain Lake Biological Station, Giles County [lat., 37^010'N; long., 80^o30' W] Exposure Factor Datasets
Citation:

The response of Peromyscus to forest opening size in the Southern Appalachian Mountains

Author(s)
Buckner, Christine A. and Donald J. Shure
Pages
299-307
Year
Issue
2
Volume
66
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density see citation figure of population density estimated as minimum number known to be alive #/ha Both Male and Female Both Adults and Juveniles 93 Nantahala National Forest Exposure Factor Datasets

Mourning Dove (Zenaida macroura)

Citation:

Nest density and success of columbids in Puerto Rico

Author(s)
Rivera-Milan, Frank F.
Pages
100-113
Year
Volume
98
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Population Density figures Figures of yearly and monthly nest density estimates nests/ha Both Male and Female Adult 48-158 transects near Guanica and Cabo Rojo Exposure Factor Datasets PUERTO RICO
Citation:

Nesting ecology of mourning doves in a cold desert ecosystem

Author(s)
Howe, Frank P. and Lester D. Flake
Pages
467-472
Year
Issue
3
Volume
101
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 0.02 density of nests nests/ha Both Male and Female Adult 15 plots Idaho National Engineering Laboratory Exposure Factor Datasets
Citation:

Nesting and production of the mourning dove in Minnesota

Author(s)
Harris, Stanley W., Marius A. Morse, and William H. Longley
Pages
150-172
Year
Issue
1
Volume
69
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density range of total annual nesting population, over 3 yrs pairs Both Male and Female Adult 65-100 pairs Madelia Research Center, Watonwan County Exposure Factor Datasets
Citation:

Nesting and production of the mourning dove in Texas

Author(s)
Swank, Wendell G.
Pages
495-505
Year
Issue
3
Volume
36
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 165 peak monthly nesting density in study area nests/81 acres Both Male and Female Adult 648 nests Texas A&M College campus Exposure Factor Datasets
Citation:

Mourning dove production in four Idaho orchards and some possible implications

Author(s)
Fichter, Edson
Pages
438-447
Year
Issue
4
Volume
23
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Population Density 208 number of nests found in 13.4 acres of orchards Both Male and Female Adult Not Reported near American Falls Exposure Factor Datasets

Deer Mouse (Peromyscus maniculatus)

Citation:

Resource allocation in some sympatric subalpine rodents

Author(s)
Vaughan, Terry A.
Pages
764-795
Year
Volume
55
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density range of mean densities measured over 3 years #/acre Both Male and Female Both Adults and Juveniles Not Reported Rabbit Ears Pass, subalpine meadows (3020 m) Exposure Factor Datasets
Citation:

Density cycles in an island population of deer mice, Peromyscus maniculatus

Author(s)
Drost, Charles A. and Gary M. Fellers
Pages
351-364
Year
Volume
60
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Population Density 17 minimum density #/ha Both Male and Female Both Adults and Juveniles Not Reported Coreopsis habitat, Santa Barbara Island [lat.,33^o29' N, long., 119^o02' W] Exposure Factor Datasets 8 SD
Population Density 5 minimum density #/ha Both Male and Female Both Adults and Juveniles Not Reported Suaeda habitat, Santa Barbara Island [lat.,33^o29' N, long., 119^o02' W] Exposure Factor Datasets
Population Density 2 Minimum density #/ha Both Male and Female Both Adults and Juveniles Not Reported grassland habitat, Santa Barbara Island [lat.,33^o29' N, long., 119^o02' W] Exposure Factor Datasets
Citation:

Some rodent populations in the Sierra Nevada of California

Author(s)
Storer, T.I., F.C. Evans and F.G. Palmer
Pages
166-192
Year
Issue
2
Volume
14
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density range of means for 3 trapping periods #/acre Both Male and Female Both Adults and Juveniles 3 trapping periods Lake Tahoe, near Myers (elev., 6225 ft) Exposure Factor Datasets
Population Density range of means for 4 trapping periods #/acre Both Male and Female Both Adults and Juveniles 4 trapping periods Bass Lake (elev., 4500 ft.) Exposure Factor Datasets

Desert Tortoise (Gopherus agassizi)

Citation:

Desert tortoise (Mojave population) recovery plan

Author(s)
United States Fish and Wildlife Service
Pages
73
Publisher
United States Fish and Wildlife Service, Region 1
Year
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type
Population Density review Not Reported Not Reported Not Reported Exposure Factor Datasets
Citation:

Aspects of the ecology of the desert tortoise, Gopherus agassizi, in Joshua Tree National Monument, Pinto Basin, Riverside County, California

Author(s)
Barrow, John
Pages
105-131
Publisher
Desert Tortoise Council
Year
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density #/mi2 Both Male and Female Both Adults and Juveniles Not Reported South West Pinto Basin, Joshua Tree National Monument Exposure Factor Datasets Riverside
Citation:

Changes in a desert tortoise (Gopherus agassizii) population after a period of high mortality

Author(s)
Germano, David J. and Michele A. Joyner
Pages
190-198
Publisher
U.S. Department of Agriculture, Forest Service, General Technical Report RM-166
Year
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Location Type Error
Population Density 59 #/km2 Both Male and Female Both Adults and Juveniles Piute Valley Exposure Factor Datasets 19-173 (95% CI)
Citation:

Field studies of natality in the desert tortoise, Gopherus agassizi

Author(s)
Hampton, Anne M.
Pages
128-138
Publisher
Desert Tortoise Council
Year
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density 300 #/mi2 Not Reported Not Reported Not Reported Fremont Valley Exposure Factor Datasets Kern

Northern Red-legged Frog (Rana aurora) formerly Rana aurora ssp. aurora

Citation:

Natural mortality of tadpoles in a population of Rana aurora

Author(s)
Calef, George Waller
Pages
741-758
Year
Issue
4
Volume
54
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Population Density 500 maximum reported density #/m2 Not Reported Tadpole Not Reported Marion Lake, southern British Columbia (elev., 300m) Exposure Factor Datasets CANADA

Sideblotched Lizard (Uta stansburiana)

Citation:

The effect of habitat, time of hatching, and body size on the dispersal of hatchling Uta stansburiana

Author(s)
Doughty, Paul and Barry Sinervo
Pages
485-490
Year
Issue
4
Volume
28
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density #/ha Not Reported Not Reported Not Reported Los Banos Exposure Factor Datasets Merced

California Vole (Microtus californicus)

Citation:

Spatial structuring and dispersal in a high density population of the California vole Microtus californicus

Author(s)
Heske, Edward J.
Pages
137-148
Year
Volume
10
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type California Counties Condition
Population Density #/ha Both Male and Female Both Adults and Juveniles Not Reported Richmond Field Station Exposure Factor Datasets Contra Costa breeding
Citation:

Social organization and space use in Califonia voles: seasonal, sexual, and age-specific strategies

Author(s)
Salvioni, M. and W. Z. Lidicker
Pages
426-438
Year
Volume
101
Exposure Endpoint Type Endpoint Description Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density range of low and high density yrs Both Male and Female Not Reported Not Reported Richmond Field Station Exposure Factor Datasets Contra Costa
Citation:

Territoriality and mating system of California voles

Author(s)
Ostfeld, Richard S.
Pages
691-706
Year
Volume
55
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Location Type California Counties
Population Density range in mean density for 2 yr #/ha Both Male and Female Adult Richmond Field Station Exposure Factor Datasets Contra Costa
Citation:

Adaptations in movement patterns of two species of salt-marsh rodents

Author(s)
Fisler, George F.
Pages
96-103
Year
Volume
67
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density #/ha Not Reported Not Reported Not Reported San Pablo salt marsh Exposure Factor Datasets Contra Costa
Citation:

Condition and diet of cycling populations of the California Vole, Microtus californicus

Author(s)
Batzli, George O. and Frank A Pitelka
Pages
141-163
Year
Issue
1
Volume
52
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density peak density #/acre Both Male and Female Both Adults and Juveniles Not Reported Richmond Field Station and Russel Reservation Exposure Factor Datasets Contra Costa

Salt-marsh Harvest Mouse (Reithrodontomys raviventris)

Citation:

The salt marsh harvest mouse (Reithrodontomys raviventris) and the Montezuma Power Plant site

Author(s)
Shellhammer, H.S.
Pages
27-32
Year
Volume
1979
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density #/ha Not Reported Not Reported 32 Collinsville Exposure Factor Datasets Solano
Citation:

A population study of the harvest mice (Reithrodontomys raviventris Dixon) in the Palo Alto Baylands Salt Marsh

Author(s)
Wondolleck, John T., William Zolan and Gary L. Stevens
Pages
52-64
Year
Volume
34
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density range for 4 habitat types #/1000 m2 Not Reported Not Reported 3 - 128 animals/type Palo Alto Baylands Exposure Factor Datasets Santa Clara

Stephens' Kangaroo Rat (Dipodomys stephensi)

Citation:

Temporal and spatial demographic patterns in Dipodomys stephensi from Riverside County, California

Author(s)
McClenaghan, Leroy R. Jr. and Ernest Taylor
Pages
636-645
Year
Volume
74
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density 19.7 average density over 19 mo study #/ha Both Male and Female Not Reported 87 San Jacinto Wildlife Area [lat., 33^o52'N; long., 117^o7'15"W] Exposure Factor Datasets Riverside
Population Density 26.2 average density over 19 mo study #/ha Both Male and Female Not Reported 96 Motte Rimrock Reserve [lat., 33^o47'30"N; long., 117^o15'W] Exposure Factor Datasets Riverside
Population Density 36.1 average density over 19 mo study #/ha Both Male and Female Not Reported 125 Lake Mathews [lat., 33^o50'N; long., 117^o27'30"W] Exposure Factor Datasets Riverside

Bullfrog (Lithobates catesbeianus formerly Rana catesbeiana)

Citation:

Bullfrog (Rana catesbeiana) invasion of a California river: the role of larval competition

Author(s)
Kupferberg, Sarah J.
Pages
1736-1751
Year
Volume
78
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type Age-Specific California Counties Error
Population Density 18.2 #/m2 Both Male and Female Tadpole 17 quadrats Angelo Coast Range Reserve [lat., 39^o44'N; long., 123^o39'W] Exposure Factor Datasets "overwintered" tadpoles Mendocino 13.1 SD
Population Density 90.9 #/m2 Both Male and Female Tadpole 20 quadrats Angelo Coast Range Reserve [lat., 39^o44'N; long., 123^o39'W] Exposure Factor Datasets "overwintered" tadpoles Mendocino 97.7 SD
Citation:

The bullfrog, Rana catesbeiana Shaw, in the lower Colorado River, Arizona-California

Author(s)
Clarkson, Robert W. and James C. deVos, Jr.
Pages
42-49
Year
Volume
20
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 9.1 mean density measured on both banks of river #/linear river km Not Reported Adult 3 visual counts lower Colorado River between Laguna and Morelos Dams Exposure Factor Datasets
Citation:

Home range and movements of the bullfrog, Rana catesbeiana (Shaw), in an Ontario pond

Author(s)
Currie, William and Edward D. Bellis
Pages
688-692
Year
Volume
1969
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type Countries
Population Density #/1000 ft2 Both Male and Female Adult 131 pond at Go Home Bay, Ontario [lat.,45N; long., 79^o59'W] Exposure Factor Datasets CANADA

Long-tailed Weasel (Mustela frenata)

Citation:

Mustela frenata

Author(s)
Sheffield, Steven R. and Howard H. Thomas
Pages
1-9
Year
Volume
570
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type
Population Density review Not Reported Not Reported Not Reported Exposure Factor Datasets

Striped Skunk (Mephitis mephitis)

Citation:

Mephitis mephitis

Author(s)
Wade-Smith, Julia and B.J. Verts
Pages
1-7
Year
Volume
173
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type
Population Density review Both Male and Female Adult Not Reported Exposure Factor Datasets

Long-toed Salamander (Ambystoma macrodactylum)

Citation:

Interaction between introduced trout and larval salamanders (Ambystoma macrodactylum) in high-elevation lakes

Author(s)
Tyler, Torrey, William J. Liss, Lisa M. Ganio, Gary L. Larson, Robert Hoffman, Elisabeth Deimling and Gregg Lomnicky
Pages
94-105
Year
Volume
12
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density range of larval density estimates in 8 fishless lakes utilizing 3 survey methodologies during day and night larvae/100 m shoreline Both Male and Female Juvenile Not Reported North Cascades National Park Service Complex Exposure Factor Datasets

Peregrine Falcon (Falco peregrinus)

Citation:

Behavior of peregrines in winter in south Texas

Author(s)
Enderson, James H., Jon Larrabee, Zach Jones, Chris Peper, and Chris Lepisto
Pages
93-98
Year
Issue
2
Volume
29
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type
Population Density one bird/50 sq. km estimated minimum density Both Male and Female Adult 20 birds near the Laguna Madre Exposure Factor Datasets

American Kestrel (Falco sparverius)

Citation:

A population study of the sparrow hawk in east-central Illinois

Author(s)
Enderson, James Harris
Pages
222-231
Year
Issue
3
Volume
72
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 4 wintering population size individuals/43 sq mi Not Reported Not Reported Not Reported agricultural lands Exposure Factor Datasets
Population Density 0.58 breeding population density birds/mi2 Not Reported Not Reported 25 birds agricultural lands Exposure Factor Datasets
Citation:

Differential habitat use by sexes of American kestrels wintering in northern California

Author(s)
Koplin, James R.
Pages
39-42
Year
Issue
2
Volume
7
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties Error
Population Density 34 average density kestrels/100 mi Both Male and Female Both Adults and Juveniles 135 obs. coastal and coast range areas Exposure Factor Datasets Colusa, Humboldt, Lake, Mendocino, Yolo +/- 11 95% CI

Mallard duck (Anas platyrhynchos)

Citation:

Production of mallards on irrigated land in the Sacramento Valley

Author(s)
Earl, John P.
Pages
23
Year
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties Condition
Population Density 396 breeding density pairs/18000 acres Both Male and Female Adult 396 pairs Conaway Ranch Exposure Factor Datasets Yolo breeding
Population Density 0.72 ducks/acre Both Male and Female Both Adults and Juveniles Not Reported Conaway Ranch Exposure Factor Datasets Yolo non-breeding
Citation:

Duck nesting in fields of undisturbed grass-legume cover

Author(s)
Duebbert, H.F. and J.T. Lokemoen
Pages
39-49
Year
Issue
1
Volume
40
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type
Population Density 76.6 nests/km2 Both Male and Female Adult Not Reported western edge of Edmunds Co., South Dakota Exposure Factor Datasets
Citation:

Homing and reproductive habits of mallards, gadwalls, and blue-winged teal

Author(s)
Lokemoen, John T., Harold F. Duebbert and David E. Sharp
Pages
1-28
Year
Volume
106
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type Condition
Population Density 3.62 breeding pairs/km2 Both Male and Female Adult Not Reported Koenig study area Exposure Factor Datasets during breeding season
Population Density 4.72 breeding pairs/km2 Both Male and Female Adult Not Reported Woodworth study area Exposure Factor Datasets during breeding season

Merriam's Kangaroo Rat (Dipodomys merriami)

Citation:

Energy relationships of the mammals of a desert shrub (Larrea tridentata) community

Author(s)
Chew, Robert M. and Alice Eastlake Chew
Pages
1-20
Year
Issue
1
Volume
40
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type
Population Density 11.47 #/ha Both Male and Female Both Adults and Juveniles Not Reported San Simon Valley, Portal (elev., 1370 m) Exposure Factor Datasets
Citation:

Ecology of rodents in Indian Cove (Mojave Desert), Joshua Tree National Monument, California

Author(s)
Chew, Robert M. and Bernard B. Butterworth
Pages
203-225
Year
Volume
45
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density range of monthly density estimates over 2 yrs #/ha Not Reported Not Reported Not Reported Indian Cove, Joshua Tree National Monument Exposure Factor Datasets
Citation:

Population Ecology of a desert rodent: Dipodomys merriami in the Chihuahuan Desert

Author(s)
Zeng, Zongyong and James H. Brown
Pages
1328-1340
Year
Issue
5
Volume
68
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type
Population Density 7.8 #/ha Both Male and Female Not Reported 782 Cave Creek Bajada, Cochise County (elev., 1330 m) Exposure Factor Datasets
Citation:

Notes on home ranges and population density of two species of heteromyid rodents in southwestern Texas

Author(s)
York, Christopher L.
Pages
42-46
Year
Volume
1
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type
Population Density 1 #/1.63 acres Male Adult Not Reported Presidio County Exposure Factor Datasets
Population Density 1 #/ 1.91 acres Female Adult Not Reported Presidio County Exposure Factor Datasets
Citation:

Range use patterns and spatial relationships of Merriams's kangaroo rats (Dipodomys merriami)

Author(s)
Behrends, Philip, Martin Daly and Margo I. Wilson
Pages
187-209
Year
Volume
96
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density 6 #/ha Both Male and Female Adult Not Reported Boyde Deep Canyon Reserve (elev., 300m) Exposure Factor Datasets Riverside

Killdeer (Charadrius vociferus)

Citation:

Killdeer breeding densities

Author(s)
Mace, Terrence R.
Pages
442-443
Year
Issue
3
Volume
90
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 33.3 estimated breeding density in open field habitat (24 ha) pairs/100 ha Both Male and Female Adult Not Reported St. Paul Campus, Univ. of MN Exposure Factor Datasets
Population Density 31.3 estimated breeding density in asphalt area habitat (32 ha) pairs/100 ha Both Male and Female Adult Not Reported St. Paul Campus, Univ. of MN Exposure Factor Datasets
Population Density 30.2 estimated breeding density in bare cultivated field habitat (43 ha) pairs/100 ha Both Male and Female Adult Not Reported St. Paul Campus, Univ. of MN Exposure Factor Datasets
Population Density 14.3 estimated breeding density in planted field habitat (14 ha) pairs/100 ha Both Male and Female Adult Not Reported St. Paul Campus, Univ. of MN Exposure Factor Datasets

Coachella Valley Fringe-toed Lizard (Uma inornata)

Citation:

Effects of reduction in windblown sand on the abundance of the fringe-toed lizard (Uma inornata) in the Coachella Valley, California

Author(s)
Turner, Frederick B., Donald C. Weaver and James C. Rorabaugh
Pages
370-378
Year
Issue
2
Volume
1984
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density #/ha Not Reported Not Reported 0-43 animals/10 plots (2.25 ha) Palm Springs, Indio Exposure Factor Datasets Riverside

Audubon's Cottontail (Sylvilagus audubonii ssp. vallicola)

Citation:

Ecology of a cottontail rabbit (Sylvilagus auduboni) population in central California

Author(s)
Fitch, Henry S.
Pages
159 - 184
Year
Volume
33
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 1 range of yearly estimates for 3 yrs #/ 1.2 - 2.6 acres Both Male and Female Both Adults and Juveniles Not Reported San Joaquin Experimental Range Exposure Factor Datasets

San Pablo Song Sparrow (Melospiza melodia ssp. samuelis)

Citation:

Utilizationof natural and man-made habitats by the salt marsh song sparrow Melospiza melodia samuelis (Baird)

Author(s)
Collins, Joshua N., and Vincent H. Resh
Pages
40-52
Year
Issue
1
Volume
71
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density 24.5; 15.4; 5.4 depending on habitat type nesting pairs/ha Both Male and Female Adult 4 (nesting pair density) Petaluma marsh Exposure Factor Datasets Sonoma

California Newt (Taricha torosa)

Citation:

Modified interactions between salamander life stages caused by wildfire-induced sedimentation

Author(s)
Kerby, J. Lawrence and Lee B. Kats
Pages
740-745
Year
Volume
79
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density range of mean larval density estimates over 2 yrs # larvae/m2 Both Male and Female Juvenile Not Reported Cold Creek, Santa Monica Mountains Exposure Factor Datasets Los Angeles
Citation:

Aggression by non-native crayfish deters breeding in California newts

Author(s)
Gamradt, Seth C., Lee B. Kats and Christopher B. Anzalone
Pages
793-796
Year
Volume
11
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density range of mean density estimates for six pools without crayfish over two time periods #/10m2 Not Reported Adult Not Reported Trancas Creek, Santa Monica Mountains Exposure Factor Datasets Los Angeles
Population Density range of mean density estimates for six pools with crayfish over two time periods #/10 m2 Not Reported Adult Not Reported Trancas Creek, Santa Monica Mountains Exposure Factor Datasets Los Angeles
Citation:

Impact of chaparral wildfire-induced sedimentation on oviposition of stream-breeding California newts (Taricha torosa)

Author(s)
Gamradt, Seth C. and Lee B. Kats
Pages
546-549
Year
Volume
110
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density range of mean densities measured each yr for 4 yrs #/10 m2 Not Reported Adult 4 yearly surveys 750m stretch of Cold Creek, Santa Monica Mountains Exposure Factor Datasets Los Angeles
Population Density range of mean densities of egg masses measured each yr for 4 yrs #/ 10 m2 Not Reported Embryo 4 yearly surveys 750m stretch of Cold Creek, Santa Monica Mountains Exposure Factor Datasets Los Angeles

Loggerhead Shrike (Lanius ludovicianus)

Citation:

Loggerhead Shrike (Lanius ludovicianus)

Author(s)
Yosef, Reuven
Pages
1-27
Publisher
The Academy of Natural Sciences and The American Ornithologists' Union
Year
Issue
231
Exposure Endpoint Type Endpoint Value Location Type Countries
Population Density review Exposure Factor Datasets CANADA, USA

Island Night Lizard (Xantusia riversiana)

Citation:

Ecology of the island night lizard, Xantusia riversiana, on Santa Barbara Island, California

Author(s)
Fellers, Gary M. and Charles A. Drost
Pages
28-78
Year
Volume
5
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type
Population Density #/ha Not Reported Not Reported Not Reported Santa Barbara Island Exposure Factor Datasets
Citation:

Ecology and energetics of the island night lizard, Xantusia riversiana, on San Clemente Island, California

Author(s)
Mautz, William J.
Pages
417-428
Publisher
Santa Barbara Museum of Natural History
Year
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type Error
Population Density 1458 #/ha Both Male and Female Both Adults and Juveniles 120 marked animals San Clemente Island Exposure Factor Datasets 103 SE

Gopher Snake (Pituophis catenifer formerly Pituophis melanoleucus)

Citation:

Ecology of a cottontail rabbit (Sylvilagus auduboni) population in central California

Author(s)
Fitch, Henry S.
Pages
159 - 184
Year
Volume
33
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type
Population Density 0.6 #/acre Not Reported Not Reported Not Reported San Joaquin Experimental Range Exposure Factor Datasets
Citation:

Food habits, consumption rates, and predation rates of western rattlesnakes and gopher snakes in southwestern Utah

Author(s)
Diller, Lowell V. and Donald R. Johnson
Pages
228-233
Year
Volume
44
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Population Density 1.2 mean density in 9 habitat types #/ha Both Male and Female Not Reported Not Reported Snake Rive Birds of Prey Area, southwestern ID Exposure Factor Datasets 0.6 SD

Southwestern Willow Flycatcher (Empidonax traillii ssp. extimus)

Citation:

Breeding ecology of a willow flycatcher population in Grand Canyon, Arizona

Author(s)
Brown, Bryan T.
Pages
25-33
Year
Volume
19
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density population density in a 360 km riparian corridor as indicated by song counts singing males/yr Male Adult 6 sampling yrs Colorado River, Grand Canyon National Park Exposure Factor Datasets
Population Density population density in a 360 km riparian corridor as indicated by active nest counts nests found/yr Both Male and Female Adult 6 sampling yrs Colorado River, Grand Canyon National Park Exposure Factor Datasets

Little Pocket Mouse (Perognathus longimembris)

Citation:

Ecology of rodents in Indian Cove (Mojave Desert), Joshua Tree National Monument, California

Author(s)
Chew, Robert M. and Bernard B. Butterworth
Pages
203-225
Year
Volume
45
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density range in monthly density estimates over 2 yrs #/ha Not Reported Not Reported Not Reported Indian Cove, Joshua Tree National Monument Exposure Factor Datasets

Song Sparrow (Melospiza melodia)

Citation:

Population structure in salt marsh song sparrows Part II: Density, Age Structure, and Maintanance

Author(s)
Johnston, Richard F.
Pages
254-272
Year
Volume
58
Exposure Endpoint Type Endpoint Value Units Sex Life Cycle Stage Sample Size Location Type California Counties Condition
Population Density 8-10 pairs/acre Both Male and Female Adult Not Reported San Pablo Marsh; San Francisco Bay Exposure Factor Datasets Contra Costa
Population Density pairs/100 acres Both Male and Female Adult Not Reported San Pablo Marsh; San Francisco Bay Exposure Factor Datasets Contra Costa breeding
Citation:

Stability, regulation, and the determination of abundance in an insular song sparrow population

Author(s)
Arcese, Peter, James N. M. Smith, Wesley M. Hochachka, Christopher M. Rogers, and Donald Ludwig
Pages
805-822
Year
Issue
3
Volume
73
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Countries
Population Density 7.8 median density; 10 fold fluctuation over 15 yr period females/ha Female Not Reported 19 years Mandarte island Exposure Factor Datasets CANADA

San Joaquin Kit Fox (Vulpes macrotis ssp. mutica)

Citation:

Assessment of abundance of San Joaquin kit foxes by spotlight surveys

Author(s)
Ralls, Katherine and L. Lee Eberhardt
Pages
65-73
Year
Issue
1
Volume
78
Exposure Endpoint Type Endpoint Value Endpoint Description Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density see citation figures showing seasonal abundance and density counts Both Male and Female Both Adults and Juveniles 1,239 surveys (dry season); 883 surveys (wet season) Exposure Factor Datasets Kern, San Luis Obispo

California Brown Pelican (Pelecanus occidentalis ssp. californicus)

Citation:

Brown pelicans in central and northern California

Author(s)
Briggs, Kenneth T., Wm. Breck Tyler, David B. Lewis, Paul R. Kelly and Donald A. Croll
Pages
353-373
Year
Issue
4
Volume
54
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type Error
Population Density 0.23 mean density at sea off central and northern coast birds/km^2 Both Male and Female Both Adults and Juveniles 3 years central and northern coast Exposure Factor Datasets 0.23 SE

Western Meadowlark (Sturnella neglecta)

Citation:

A determination of the economic status of the western meadowlark (Sturnella neglecta) in California

Author(s)
Bryant, Harold C.
Pages
377-510
Year
Issue
14
Volume
11
Exposure Endpoint Type Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density birds/acre Not Reported Not Reported 23-67 birds counted Los Banos, Merced Exposure Factor Datasets Merced

San Clemente Loggerhead Shrike (Lanius ludovicianus ssp. mearnsi)

Citation:

Natural history and management of the San Clemente loggerhead shrike

Author(s)
Scott, Thomas A. and Michael L. Morrison
Pages
23-57
Year
Issue
2
Volume
4
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density range in density of pairs, 4 years pairs/km Both Male and Female Adult 5-13 pairs/year San Clemente Island Exposure Factor Datasets

Sea Otter (Enhydra lutris)

Citation:

Home range and territoriality of sea otters near Monterey, California

Author(s)
Loughlin, T.R.
Year
Issue
3
Volume
44
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density 54 population density, 1975 - 1977 Animals per study area Both Male and Female Both Adults and Juveniles 54 Monterey, CA Exposure Factor Datasets Monterey

Kit Fox (Vulpes macrotis)

Citation:

Notes on ecology and food of the Kit fox in Central Utah

Author(s)
Smith, Dwight G.
Pages
96 - 98
Year
Issue
2
Volume
3
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 4 mean number of pairs on study area pairs/207 km^2 Both Male and Female Adult Not Reported Exposure Factor Datasets

California Ground Squirrel (Spermophilus beecheyi)

Citation:

Ecology of the California ground squirrel on grazing lands

Author(s)
Fitch, Henry S.
Pages
559-596
Year
Volume
39
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 2.3 five year average #/acre Both Male and Female Adult 275 San Joaquin Experimental Range Exposure Factor Datasets

Great Horned Owl (Bubo virginianus)

Citation:

Ecology of a cottontail rabbit (Sylvilagus auduboni) population in central California

Author(s)
Fitch, Henry S.
Pages
159 - 184
Year
Volume
33
Exposure Endpoint Type Endpoint Value Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type
Population Density 1 estimated population density based on call counts bird/100 acres Not Reported Adult 7 counts San Joaquin Experimental Range Exposure Factor Datasets

Fresno Kangaroo Rat (Dipodomys nitratoides ssp. exilis)

Citation:

The Fresno kangaroo rat population survey, 1977 (Final Report)

Author(s)
Koos, Karen A.
Pages
10
Publisher
California Department of Fish and Game, Nongame Wildlife Investigations
Year
Exposure Endpoint Type Endpoint Description Units Sex Life Cycle Stage Sample Size Location Type California Counties
Population Density range for 2 sites; mean density for 4 sampling periods #/ha Not Reported Not Reported 68 - 326 animals/site Whitesbridge Rd. Exposure Factor Datasets Fresno

Audubon's Cottontail (Sylvilagus audubonii)

Citation:

Sylvilagus audubonii

Author(s)
Chapman, Joseph A. and Gale R. Willner
Pages
1-4
Year
Volume
106
Exposure Endpoint Type Endpoint Value Sex Life Cycle Stage Sample Size Location Type
Population Density review Both Male and Female Adult Not Reported Exposure Factor Datasets
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