Some aspects of the distribution of Benthis fauna in Cedar Lake, Manitoba

Abstract

Cedar Lake is the largest lake on the Saskatchewan River system, having an area of 320,000 acres. The lake can be divided into a main basin and a smaller, irregular north arm. The physical and chemical properties of the lake and the benthic fauna were studied during a period of two and half months, from June 14 to August 31, 1961. Twenty permanent stations, located in the main basin of the lake were examined during six approximately equally spaced sampling periods. These stations were positioned along 5 transects, at depths of 5, 10, 20 and 30 feet. A total of 600 dredge samples were taken over the summer and from this material the number of organisms for each sample period was counted and the wet and the dry weights determined...