CGRG Bibliography of Canadian Geomorphology
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Author : Bachteram, A.M.
Date : 2004.
Title : Bioturbation by Hexagenia larvae (Ephemeroptera [microform]: ephemeridae) and its implications for sediment suspension in Lake Erie.
Publication : Unpublished MSc thesis. University of Windsor, Ontario.
Issue :
Page(s) :
Abstract
Burrowing activities of aquatic benthic organisms can influence sediment suspension and nutrient cycling. The burrowing mayfly 'Hexagenia' is a dominant benthic organism in western Lake Erie, and 'Hexagenia ' bioturbation can potentially influence water quality and other benthic organisms. Using laboratory experiments, I determined bioturbation-induced sediment suspension rates of fine Lake Erie sediment caused by 'Hexagenia ' larvae of varying body lengths (13-28 mm) at densities of 70-1,111 larvae/m2 and water temperatures ranging from 10-25°C. Bioturbation rates (sediment suspension, g/m2/h) were estimated by nonlinear regression from measurements of suspended sediment concentrations in jars, taken twice-daily for 14 d. Sediment settling rates were also estimated from twice-daily measurements of suspended sediment concentrations collected for an additional 18 d in the surface water from the bioturbation experiments.
Bibliography of Canadian Geomorphology