Machine Lake/Knudson Marsh
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View Surveys (1)
View Sources (4)
Grebe Survey Summary
- Max Adults: 1
- Year: 1955
- Most Recent Adults: 1
- Year: 1955
- Survey Type: N/A
- Most Common Threats Reported: Water too low; lack of/poor nesting habitat; cattle grazing/intrusion
- Lake name:
- Machine Lake/Knudson Marsh
- Location:
- Utah
- Latitude:
- 41.488828
- Longitude:
- -112.10092
- Surface area (km2):
- 1
- Basin type:
- non-reservoir
- Management agency:
- private (Knudson family)
- Region associations:
- Great Salt Lake
- Comments:
- Privately owned by Knudson family. Part of a larger complex of wetlands that connects to Great Salt Lake. Coordinates are approximate estimate based on maps and description of location.
Surveys (1)
Survey Citation:
Weller, M. W., B. H. Wingfield, and J. B. Low. 1958. Effects of habitat deterioration on bird populations of a small Utah marsh.Condor 60:220–226.
-
Time period
1950, 1955 -
Source
Journal Article -
Both Western and Clarks?
N
| Count Type | Range | Max | Year |
|---|---|---|---|
| Max Adults | 1 to 100 | 1 | 1955 |
| Most Recent Adults | 1 to 100 | 1 | 1955 |
| Max Nests | 1 to 100 | 1 | 1950 |
| Most Recent Nests | 0 | 0 | 1955 |
| Max Chicks | N/A | N/A | N/A |
| Most Recent Chicks | N/A | N/A | N/A |
Comments:
Wingfield studied bird populations and productivity at Knudson Marsh in 1950 (Wingfield and Low, 1955). In 1955, Weller studied populations at the same marsh and did a comparison. Between those two years, water supply decreased due to drought conditions, increased irrigation needs, and less rainfall.
Sources of Information
- Weller, M. W., B. H. Wingfield, and J. B. Low. 1958. Effects of habitat deterioration on bird populations of a small Utah marsh.Condor 60:220–226.; Michot, T. C. 1976. Nesting ecology of the redhead duck on Knudson Marsh, Utah. All Graduate Theses and Dissertations. 2135. https://digitalcommons.usu.edu/etd/2135,
- Michot, T. C. 1976. Nesting ecology of the redhead duck on Knudson Marsh, Utah. All Graduate Theses and Dissertations. 2135. https://digitalcommons.usu.edu/etd/2135,
- Machine Lake Mitigation Bank
- Machine Lake Mitigation Bank Area Map