Michael R. Riggs

Analysis of Covariance Models for Data From Observational Field Studies (2008)

Michael R. Riggs, Kurt J. Haroldson, Mark A. Hanson

We outline the features of a general class of statistical models (i.e., analysis of covariance [ANCOVA] models) that has proven to be effective for the analysis of data from observational studies. In...

Black Tern Nest Habitat Selection and Factors Affecting Nest Success in Northwestern Minnesota (2007)

Stephen J. Maxson, John R. Fieberg, Michael R. Riggs

FACTORS INFLUENCING INCUBATION EGG-MASS LOSS FOR THREE SPECIES OF WATERFOWL (2004)

Michael C. Zicus, David P. Rave, Michael R. Riggs

Many bird eggs lose ∼15% of their fresh mass before pipping, but individual species have been reported to lose 10–23%. Most published estimates have been imprecise due to small sample sizes....

A SURFACE-ASSOCIATED ACTIVITY TRAP FOR CAPTURING WATER-SURFACE AND AQUATIC INVERTEBRATES IN WETLANDS (2000)

Mark A. Hanson, Christiane C. Roy, Ned H. Euliss Jr., Kyle D. Zimmer, Michael R. Riggs, Malcolm G. Butler

We developed a surface-associated activity trap (SAT) for sampling aquatic invertebrates in wetlands. We compared performance of this trap with that of a conventional activity trap (AT) based on...

Prevalence of Toxoplasma gondii antibodies in hunter-killed white-tailed deer (Odocoileus virginianus) in four regions of Minnesota (1996)

Vanek, Jerome A., Dubey, J.P., Thulliez, P., Riggs, Michael R., Stromberg, Bert E.