Acoustical monitoring of fish at an electric barrier

• Autorzy: Godlewska M. , Doroszczyk L. , Długoszewski B. , Mokwa M.
• Języki publikacji: EN

Abstrakty

EN

Acoustical monitoring of fish at an electric barrier was performed using EY 500 split beam echo-sounder with the transducer directed horizontally. Stationary measurements done during the operating barrier and when the electric power was switched off have shown statistically significant difference in the number of fish approaching the barrier, 11 fish in the first case, and over 280 in the second. The electric barrier affected more strongly large fish than the small ones. Mobile measurements performed in a basin from which fish were approaching barrier revealed the higher fish concentration just in front of the operating barrier than elsewhere.

Słowa kluczowe

EN

acoustical monitoring; fish; electric barrier

• Wydawca: Polskie Towarzystwo Akustyczne. Oddział Gdański
• Czasopismo: Hydroacoustics
• Rocznik: 2008
• Tom: Vol. 11
• Strony: 97--104
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Godlewska M.

autor

Doroszczyk L.

autor

Długoszewski B.

autor

Mokwa M.

• European Regional Centre for Ecohydrology under auspices of UNESCO, Polish Academy of Sciences, Łódź, Poland,

Bibliografia

• 1. G.F. Cada, Assessing fish mortality rates, Hydrol. Rev. ,52-60, 1990.
• 2. I. Cowx, and P. Lamarque, (Eds), Fishing with Electricity, Oxford, Fishing News Books Ltd., 288 pp, 1990.
• 3. K.G. Foote, H.P. Knudsen, G.D. Vestnes, N. MacLennan, E.J. Simmonds, Calibration of acoustic instruments for fish density estimation: a practical guide. ICES Cooperative Research Report, 144 pp, 1987.
• 4. J.E. Francroft, G.F. Cada, D.D. Duable, R.T. Hunt, D.W. Jones, B.N. Rinehart, G.L. Sommers, and R.J. Costello, Environmental mitigation at hydroelectric projects. Vol. II Benefits and costs of fish passage and protection, Idaho Nat. Engineering Laboratory Report, 250 pp, 1994.
• 5. S.V. Johnston, B. H. Ransom, J.R. Bohr, Comparison of Hydroacoustic and Net Catch estimates of Fish Entrainment at Tower and Kleber Dams, Black River, Michigan. WaterPower’93, Proceedings of the International Conference on Hydropower, p. 308-317, 1993.
• 6. J. Kubecka, J. Matena, and P. Hartvich, Adverse ecological effects of small hydropower stations in the Czech Republic: 1. Bypass plants. Regulated Rivers: Research & Management 13: 101-113, 1997.
• 7. S. Lusk, K. Halačka, and V. Lusková, Influence of small hydropower stations on fish communities in streams, Animal Husbandry, 40, 363-367, 1995.
• 8. R.E. Thorne, W. Acker, L. Johnson, Observations on the behavior of fish around a power plant intake using acoustic techniques. Washington Sea Grant Tech. Rep. 79-2, p. 1-12, 1979.
• 9. R.E. Thorne. Hydroacoustic remote sensing for artificial habitats, Bull. Mar. Sci.. 55, 899-903, 1994.