Bogatov V.V.
В журнале Soviet Journal of Ecology
Год: 1979 Том: 10 Номер: 4 Страницы: 337-342
Known methods of determining the mean drift distance L of benthic invertebrates can be used on water courses with low water velocity and a small flow. For rivers with a large flow it is suggested that L should be calculated from the formula L=Ndl/N. A formula for calculating the mean time T spent by benthic organisms in suspension in the water and their L for a particular time of day is given. It is shown that in the Bureya River, with awater velocity of 0,22 m/sec near the bank, 23% of the Heptagenia soldatovi Tshern. larvae (T = 15 min, L = 200 m) and 7% of the Capniidae gen. sp. juv. (T = 3 min, L = 35 m) are involved in the drift in the course of 24h.
