Impacts of changing irrigation practices on waterfowl habitat use in the southern San Joaquin Valley, California
California Fish and Game
By: D. A. Barnum and N. H . Euliss Jr.
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Abstract
We used diurnal aerial census data to examine habitat use patterns of ducks wintering in the southern San Joaquin Valley, California from 1980-87. We calculated densities (birds/ha) for the northern pintail (Anas acuta), mallard (A. platyrhynchos), green-winged teal (A. crecca), cinnamon teal (A. cyanoptera), shoveler (A. clypeata), ruddy duck (Oxyura jamaicensis), and total ducks in each of 5 habitats. Densities of pintail and total ducks were greater in September than in other months. From October through January, density of teal and total ducks was greatest on Kern National Wildlife Refuge (NWR). Densities of ruddy duck and pintail were greatest on agricultural drainwater evaporation ponds and preirrigated cropland, respectively.
Suggested Citation
Barnum, D.A., and Euliss, N.H., 1991, Impacts of changing irrigation practices on waterfowl habitat use in the southern San Joaquin Valley, California: California Fish and Game, v. 77, no. 1, p. 10-21.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Impacts of changing irrigation practices on waterfowl habitat use in the southern San Joaquin Valley, California |
| Series title | California Fish and Game |
| Volume | 77 |
| Issue | 1 |
| Year Published | 1991 |
| Language | English |
| Contributing office(s) | Northern Prairie Wildlife Research Center |
| Description | 12 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | California Fish and Game |
| First page | 10 |
| Last page | 21 |
| Country | United States |
| State | California |
| Other Geospatial | Southern San Joaquin Valley |