Resource partitioning of Calamoecia lucasi Brady and Boeckella triarticulata (Thomson) (Copepoda:Calanoida) in an Australian reservoir

In Lyell Reservoir the food niches of Calamoecia lucasi and Boeckella triarticulata appear to be substantially separated by food type and/or food size. Large B. triarticulata eat a wider size range of food particles and exhibit greater dietary richness and breadth than do the small C. lucasi, even though the dietary richness and breadth for the two calanoid species fluctuate through time. The dietary overlap is also variable but is generally low, ranging from 0.329-0.752 in terms of Schoener's index.