Sampling and Processing Aquatic and Terrestrial Invertebrates in Wetlands

Obtaining unbiased samples of aquatic and terrestrial invertebrates from wetlands provides unique challenges due to the varied life history strategies of invertebrates as well as the heterogeneity present within a wetland. Many sampling devices are useful in more than one sampling environment within a wetland but the effectiveness of most methods varies among and within wetlands as well as between users. In this chapter, we emphasize field collecting techniques and address laboratory sorting methods. When possible, the advantages and disadvantages of each method are listed and suggestions are provided to reduce bias and unwanted variability in sample collection. Sampling devices for benthic (grabs, single and multiple cores, nets, and artificial substrate), water-column (open cylinder, emergence trap, activity trap, sweep net), epiphytic (box samplers, quadrat samplers), flying terrestrial (aerial net, flight intercept trap, light trap, malaise trap), and non-flying terrestrial (sweep net, aspirator, vacuum sampler, Berlese-Tullgren funnel, mist net) invertebrates are presented and discussed.

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Authors and Affiliations

  1. Division of Forestry and Natural Resources and Environmental Research Center, West Virginia University, 6125, Morgantown, WV, 26506-6125, USA James T. Anderson
  2. Laboratorio de Bentos, Instituto Nacional de Limnología, Consejo Nacional de Investigaciones Científicas y Técncias, Universidad Nacional del Litoral, Ciudad Universitaria S/N, Santa Fe, 3000, Argentina Florencia L. Zilli, Luciana Montalto & Mercedes R. Marchese
  3. Facultad de Humanidades y Ciencias, Universidad Nacional del Litoral, Ciudad Universitaria, Santa Fe, 3000, Argentina Florencia L. Zilli, Luciana Montalto & Mercedes R. Marchese
  4. Division of Plant and Soil Sciences, West Virginia University, 6108, Morgantown, WV, 26506-6108, USA Matthew McKinney & Yong-Lak Park
  1. James T. Anderson