Design of a paired-weir system for experimental manipulation of environmental flows in streams.

Autor: Rosero-López, D., Cowen, E. A., Walter, M. T., De Bièvre, B., González-Zeas, D., Flecker, A.S., Osorio, R., Dangles, O.
Předmět:
Zdroj: Journal of Ecohydraulics; Apr2023, Vol. 8 Issue 1, p81-88, 8p
Abstrakt: Controlled in-stream flow manipulations are challenging but necessary to implement to assess the consequences of real-world flow alterations on aquatic ecosystems. We designed a double v-notch weir system, which was first prototype-tested in a laboratory flume and then in the field. The device diverted instantaneous flows proportionally in a robust way (e.g., 10% of flow in the stream main channel and 90% of flow into the diversion channel). We tested diversions systematically and evaluated how well flows matched our target flow-percentages. This is one of the first ecohydraulic structures designed and tested to experimentally manipulate environmental flows in small upland streams. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index