Evaluation of Survey Methods for Colonial Waterbirds at Chase Lake National Wildlife Refuge, North Dakota, data release
January 6, 2020
We investigated methods to estimate the number of nests of waterbirds at a large, mixed-species colony at Chase Lake National Wildlife Refuge in south-central North Dakota in 2012 and 2013. The data were summarized and used in the analyses for a publication in a U.S. Geological Survey Open-File Report. The data consist of two data sets that were used to assess visible-nest counts for ciconiiform species conducted from the perimeter of nesting areas (hereafter perimeter counts) and observational surveys from fixed points outside the colony to count flights of adult ciconiiforms in and out of the colony (hereafter flightline surveys) as alternatives to within-colony counts of ciconiiform nests.
Citation Information
| Publication Year | 2020 |
|---|---|
| Title | Evaluation of Survey Methods for Colonial Waterbirds at Chase Lake National Wildlife Refuge, North Dakota, data release |
| DOI | 10.5066/P90NK31K |
| Authors | Lawrence D Igl, Alisa J. Bartos, Robert O. Woodward, Paulette Scherr, Marsha A. Sovada |
| Product Type | Data Release |
| Record Source | USGS Asset Identifier Service (AIS) |
| USGS Organization | Northern Prairie Wildlife Research Center |
| Rights | This work is marked with CC0 1.0 Universal |
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Evaluation of survey methods for colonial waterbirds at Chase Lake National Wildlife Refuge, North Dakota
Estimating the number of breeding pairs in a mixed-species waterbird colony is difficult because colonial waterbirds are vulnerable to human intrusion and their colonies are often in remote areas with limited access. We investigated methods to estimate the number of nests of waterbirds at a large, mixed-species colony at Chase Lake National Wildlife Refuge in south-central North Dakota. The primar
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Lawrence D. Igl, Alisa J. Bartos, Robert O. Woodward, Paulette Scherr, Marsha A. Sovada
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Evaluation of survey methods for colonial waterbirds at Chase Lake National Wildlife Refuge, North Dakota
Estimating the number of breeding pairs in a mixed-species waterbird colony is difficult because colonial waterbirds are vulnerable to human intrusion and their colonies are often in remote areas with limited access. We investigated methods to estimate the number of nests of waterbirds at a large, mixed-species colony at Chase Lake National Wildlife Refuge in south-central North Dakota. The primar
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Lawrence D. Igl, Alisa J. Bartos, Robert O. Woodward, Paulette Scherr, Marsha A. Sovada