Malcolm G. Butler

Invertebrate Community Variation in Seasonal Forest Wetlands: Implications for Sampling and Analyses (2008)

Anthony T. Miller, Mark A. Hanson, James O. Church, Brian Palik, Shane E. Bowe, Malcolm G. Butler

Using data sets from two separate studies, we assessed within-year variation in aquatic invertebrate communities in 31 seasonally flooded (seasonal) wetlands in aspen (Populus spp.) – dominated...

BIOTIC INTERACTIONS AS DETERMINANTS OF ECOSYSTEM STRUCTURE IN PRAIRIE WETLANDS: AN EXAMPLE USING FISH (2005)

Mark A. Hanson, Kyle D. Zimmer, Malcolm G. Butler, Brian A. Tangen, Brian R. Herwig, Ned H. Euliss Jr.

Wetlands are abundant throughout the prairie pothole region (PPR), an area comprising over 700,000 km2 in central North America. Prairie wetland communities are strongly influenced by regional...

INTERSPECIES RELATIONSHIPS, COMMUNITY STRUCTURE, AND FACTORS INFLUENCING ABUNDANCE OF SUBMERGED MACROPHYTES IN PRAIRIE WETLANDS (2003)

Kyle D. Zimmer, Mark A. Hanson, Malcolm G. Butler

Submerged macrophytes are important components of wetland ecosystems in the Prairie Pothole Region of North America, but factors influencing species abundance and community structure are poorly...

SELECTIVITY FOR ZOOPLANKTON PREY BY FATHEAD MINNOWS AND BROOK STICKLEBACKS (2003)

Leah M. Laurich, Kyle D. Zimmer, Malcolm G. Butler, Mark A. Hanson

Wetlands in the Prairie Pothole Region of North America are harsh environments for fish, and only two planktivorous species are common in these ecosystems: fathead minnows (Pimephales promelas) and...

WEAK CORRESPONDENCE BETWEEN MACROINVERTEBRATE ASSEMBLAGES AND LAND USE IN PRAIRIE POTHOLE REGION WETLANDS, USA (2003)

Brian A. Tangen, Malcolm G. Butler, Michael J. Ell

To evaluate the potential development of a macroinvertebrate Index of Biotic Integrity (IBI) for Prairie Pothole Region wetlands, we sampled the aquatic macroinvertebrate and fish communities in 24...

A COMPARISON OF HORIZONTALLY AND VERTICALLY DEPLOYED AQUATIC INVERTEBRATE ACTIVITY TRAPS (2001)

Miles J. Muscha, Kyle D. Zimmer, Malcolm G. Butler, Mark A. Hanson

Activity traps are commonly used to develop abundance indices of aquatic invertebrates and may be deployed with either the funnel parallel to the water surface (horizontal position) or facing down...

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...

Shear Stress and Sediment Resuspension in Canopy-and Meadow-Forming Submersed Macrophyte Communities (1998)

James, William F., Barko, John W., Butler, Malcolm G.

This technical note examines the impact of differing biomass levels and plant architectural types on bottom shear stress and sediment resuspension in shallow systems. Studies were conducted at Lake...