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Abstract: Sampling devices that minimize bias and function in aquatic habitats used by waterfowl are needed. We devised a multiple tube sampling device for quantitative sampling of small (<3 cm) aquatic invertebrates in wetlands. The sampler reduced bias associated with sampling macroinvertebrates that utilize the benthic-pelagic interface because it simultaneously collects benthic and water column invertebrates. The sampler was statistically superior to other sampling devices because each sampling effort provided 4 subsamples and a within-sample variance that could be estimated. The device also was durable and reasonably inexpensive to construct.

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Table of Contents

• Introduction
• Methods
• Results
• Discussion
• Management Implications
• Literature Cited

Tables and Figures

• Table 1 -- Density of selected macroinvertebrate taxa collected.

• Figure 1 -- Schematic view of the multiple tube sampling device.

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Euliss, Ned H., Jr. and George A. Swanson, U.S. Fish and Wildlife Service, Northern Prairie Wildlife Research Center, Route 1, Box 96C, Jamestown, ND 58401-9736
Jeffery Mackay, U.S. Fish and Wildlife Service, Northern Prairie Wildlife Research Center, 6924 Tremont Road, Dixon, CA 95620. Present address: Ruby Lake National Wildlife Refuge, Ruby Valley, NV 89833

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