Abstract
Macrozoobenthos displayed several interesting trends with regards to their occurrence and movement in the streams in response to various abiotic and biotic factors constituting the aquatic ecosystem. These are considered of great ecological significance in understanding the quality of the particular ecosystem. The present communication focused on understanding the spatial and temporal diel drifting patterns displayed by macrozoobenthos in different levels of stream orders at different duration round the clock. It was observed that there was a general preference of nocturnal and early evening hours of drifting. The drift by benthic species was performed mainly due to presence of predators, lack of proper food and breeding sites. The study revealed that highest diel drift density and diversity of macrozoobenthos was found in 3rd order in comparison to 2nd and 1st order of Kyunja Gad stream. Variations were also noted in the physico-chemical parameters of streams Kyunja Gad at different orders.
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