North Temperate Lakes LTER: Benthic Macroinvertebrates 1981 - current

Macroinvertebrates are collected from selected shoreline and deep water locations in three primary research lakes (Crystal, Sparkling, and Trout lakes) in the Trout Lake area using modified Hester-Dendy samplers. Samplers are placed at fyke net and gill net locations in August and retrieved 3-4 weeks later. Macroinvertebrates are preserved in ethanol. This dataset contains counts of various groups of macroinvertebrates identified from specific samples. The majority of the identifications are at the genus level. The data table "Benthic Macroinvertebrate Codes" identifies the taxonomic group represented by each group code. Taxonomic references: Ecology and Classification of North American Freshwater Invertebrates, Edited by James H Thorp and Alan P Covich, Academic Press, Inc, 1991; Aquatic Insects of Wisconsin, William L Hilsenhoff, Natural History Museums Council, University of Wisconsin-Madison (1995). No lakes were sampled in 2020 or 2021. Sampling Frequency: annually. Number of sites: 17.