Northern Prairie Wildlife Research Center
Mallard Recruitment in the Agricultural Environment of North Dakota
This study could not have been accomplished without the field and office assistance
of technicians, K. Devening, J. F. Gulke, B. A. Hanson, M. A. Hay, J. H. Heggeness,
S. T. Knick, W. Norling, D. L. Orthmeyer, J. L. Piehl, D. L. Pieske, R. R. Reynolds,
R. Rosenfield, W. J. Schaller, J. L. Sease, S. M. Sturtz, and L. W. Vanderhoeff.
In addition, technicians R. L. Duval and L. M. Mechlin made major contributions
in design and execution of the study. Telemetry equipment was obtained from
and maintained by the Cedar Creek Bioelectronics Laboratory of the University
of Minnesota. Data processing and development of computer programs were accomplished
by D. A. Davenport, A. M. Frank, and C. L. Nustad. A. M. Frank and D. H. Johnson
furnished statistical consultation in design of the study and analysis of data.
We made use of the simulation model developed as a research tool by these statisticians
working with biologists L. M. Cowardin, R. D. Crawford, T. J. Dwyer, D. S. Gilmer,
R. J. Greenwood, G. L. Krapu, A. B. Sargeant, and G. A. Swanson. Many other
staff members of the Northern Prairie Wildlife Research Center under the direction
of W. R. Goforth and later under R. C. Stendell contributed to the ideas presented
here. W. R. Goforth, R. J. Greenwood, K. F. Higgins, R. L. Jessen, D. H. Johnson,
A. T. Klett, H. W. Miller R. J. Pospahala, A. B. Sargeant, J. R. Serie and R.
C. Stendell read drafts of the manuscript. D. W. Sparling furnished a critical
review. M. G. Anderson and L. H. Fredrickson kindly served as consulting editors.
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