The bioindication tests of water bodies with strong current should consider the drift propensity of the indicator species. The author identified 56 macrozoobenthos species in Nepryadva River, of which 32 species were able to drift. Invertebrate drift was typically observed only during specific time intervals. Some invertebrate groups drifted only during night-time, whereas others drifted during day and night. Specific features of invertebrate drift should be taken in account during evaluation of saprobic capacity of water reservoirs. The data on daily variations of drift activity was used to recommend the optimal time of the day for harvesting of bioindication samples. The collected scientific evidence can be used to predict the long-term changes in the state of benthic ecosystems.
This is how I came up with the idea for this project:When I was ten years old I felt an inspiration in nature and ecology. For the last 7 years I also participate in additional education organization of nature admires «Gamma». I enjoy taking active part in biology and ecology olympiads and scientific projects.
A study of drift of aquatic invertebrates in Nepryadva RiverProgramme manager ania.andersch@siwi.org +46 8 121 360 59