In April 1997. Mollusca Gastropoda Bythinia sp. 25 Bivalia Pisidium sp. 14 Helobdella spp. In Three Regions In White Lake, October 1996.
Values given are the P-levels.
Test analysis of the October 1996 abundance of Chironomus sp. Chironomus sp. were significantly less abundant in the Tannery Bay stations. Organisms in the genus Chironomus commonly feed on detrital material in the sediments. Since the grain size and organic carbon content of the exterior and interior stations were similar, both regions should have comparable chironomid populations. These results suggest that the quality of the detrital food source or sediment toxicity maybe responsible for the depression of the Chironomus sp. population.