Hidrológiai Közlöny 2006 (86. évfolyam)
6. szám - XLVII. Hidrobiológus Napok: Vizeink élővilágát érintő környezeti változások Tihany, 2005. október 5–7.
87 mástól. Csak a CPUE-biomassza és a az akusztikus halbiomassza közötti regresszió volt szignifikáns. Köszönetnyilvánítás Kutatásainkat az OTKA T 048758, valamint az NKFP3B/0014/2002 témák anyagi támogatásával végeztük. Irodalom Balk H. & Lindem T. (2003). Lindem Data Acquistion, Sonar5-Pro. Simrad, Norway, p.267. Hannson, S. és Rudstam, L. G. (1994). Gillnet catches as an estimate of fish abundance: a comparison between vertical gillnet catches and hydroacoustic abundances of Baltic Sea herring (Clupea sprattus). Can. J. Fish. Aquat. Sei., 52, 75-83 Rudstam L. G., Magnuson J. J. & Tonn W. M. (1984). Size selectivity of passive fishing gear: A correction for encounter probability applied to gill nets. Can. J. Fish. Aquat. Sei. 41: 1252-1255. Tátrai, I., Mátyás, K., Korponai, J. Paulovits, G., Pomogyi, P. (2000). The role of Kis-Balaton Water protection system in the control of water quality of Lake Balaton. Ecological Engineering 16: 73-78. Tátrai, I., Paulovits, G., Mátyás, K., and Korponai, J. (2003). The role of fish communities in water quality management of large shallow lake. Int. Rev. Hydrobiol., 88, 498-507. Tátrai, I., Mátyás, K., Korponai, J., Szabó, G., Pomogyi, P. and Héri, J. (2005). Response of nutrients, plankton communities and macrophytes to fish manipulation in a small eutrophic wetland lake. Int. Rev. Hydrobiol (in press) Tischler G., Gassner H. & Wanzenböck, J. (2000). Sampling characteristics of two methods for capturing age-0 fish in pelagic lake habitats. J. Fish. Biol. 57: 1474-1487. Comparative surveys of fish communities in the Kis-Balaton Water Protection Reservoir Agnes I. György', István Tátrai 2, Péter Bíró 2, Zoltán Sz- Pintér 3 'Univesity of Veszprém, Limnology Department, H-8200. Veszprém 2 Balaton Limnological Research Institute, H-8237. Tihany 'Szent István University, H-2100. Gödöllő Abstract: During the year 2005 we have carried out comparison fish-stock surveys in the, Kis-Balaton Water Protection Reservoir- I, .in the shallow, eutrophic Major Lake (11 ha), used exclusively for angling. Seasonal, multipanel gillnet surveys were conducted for studying the fish species composition, size frequency distribution and standardised CPUE ( Catch Per Unit Effort ) - abundance, and CPUE - biomass. Parallel with gillnet surveys we carried out hydroacustic surveys with Simrard EK 60 type sonar, measuring the size frequency distribution and stock abundance and biomass. During our study we established regression relationship between the CPUE - abundance and - biomass, and between the hydroacustic abundance and biomass. Keywords: Hydroacoustic survey, CPUE-values, size frequency, abundance, biomass, Kis-Balaton, Major Lake. K l ossy Irén alkotása (Fametszet, Magyar tájak sorozat)
