ANNUAL PRODUCTION OF A STREAM MAYFLY POPULATION: A COMPARISON OF METHODS1
- 1 March 1973
- journal article
- Published by Wiley in Limnology and Oceanography
- Vol. 18 (2) , 286-296
- https://doi.org/10.4319/lo.1973.18.2.0286
Abstract
The annual production of the mayfly Ephemerella subvaria McDunnough in a small central Minnesota stream, Luxemburg Creek, was estimated by four methods: a removal‐summation method, the instantaneous growth method, the Allen curve, and the Hynes method. Basic data on standing crop and growth rates were obtained from a series of bottom samples covering the life cycle of the mayfly. The life history of E. subvaria was clear and simple, and the data were particularly amenable to production estimation by all four methods. The first three yielded estimates of annual production that generally agreed, ranging from 26.4 to 28.9 g m−2. The Hynes method yielded an estimate 15.2 to 26.1% higher, or 33.3 g m−2. Cohort turnover ratios for the first three methods ranged from 4.2 to 4.6 (not calculable for the Hynes method); the annual turnover ratio for the first three methods ranged from 5.8 to 6.3 and was 7.2 for the Hynes method.This publication has 0 references indexed in Scilit: