Hidrológiai Közlöny, 2014 (94. évfolyam)
2014 / 5-6. különszám - LV. Hidrobiológus Napok előadásai
61 Andersen, R. A., Kawachi, M. (2005): Traditional Microalgae Isolation Techniques in Andersen R. A. (ets.) Algal culturing techniques. Elsevier Academic Press, 90-92 pp. Battarbee, R. W. (2000): Paleolimnological approaches to climate change, with special regard to the biological record. Quaternary Science Reviews 19:107-124. A magyarországi szikes tavak sótartalma és ionösszetétele Boros, E., Vörös, L. (2010): A magyarországi szikes tavak sótartalma és ionösszetétele. Acta Biologica Debrecina-Supplementum Oeco- logica Hungarica 22: pp. 37-51. Garda, C. M., García-Ruiz, R., Rendón, M., Niell, F. X., Lucena, J. (1997): Hydrological cycle and interannual variability of aquatic community in a temporary saline lake (Fuente de Piedra, Southern Spain). Hydrobiologia 345: 131-141. GraFit by R. Leatherbarrow, Founder and Lead Design Engineer (1989-1992): Independent software development company specializing in products for use in scientific research and development, London, UK. ISBN GB04 LOYD 3094 4200 944190, URL http://www.erithacus.com/grafit . Padisák, J., Ács, É., Borics, G., Buczkó, K., Grigorszky, I., Kovács, Cs., Mádl-Szőnyi, J., Soróczki-Pintér, É. (2006). A Víz Keretirányelv és a vízi habitatdiverzitás konzerváció biológiai vonatkozásai. Magyar Tudomány 167: 663-669. Pellinger Attila és Ferenczi Márta (2009): Vízimadarak monitorozása a Fertőn és a Hanságban. Szélkiáltó 14:14-16. Platt, T., Gallegos, C., L., Harrison, W., G. (1980). Photoinhibition of photosynthesis in natural assemblages of marine phytoplankton. Journal of Marine Research 38: 687-701. R Development Core Team (2010) R: A language and environment for statistical computing, reference index version 2.11.0. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0, URL http://www.R-project.org . Stenger-Kovács, Cs., Lengyel, E., Buczkó, K. (2013): Kis szikes tavak kovaalga guildjei. Hidrológiai Közlöny. Szabó, A., 1997. A hazai szikes élőhelyek kutatásának áttekintése és a jövő feladatai. Hidrológiai Közlöny 77: 103-104. Szépszó, G. (2008): Regional change of climate extremes over Hungary based on different regional climate models of the PRUDENCE project. Quarterly Journal of the Hungarian Meteorological Service 112: 265-284. Üveges, V., Vörös, L., Padisák, J. & Kovács, A. W (2011): Primary production of episammic algal communities in Lake Balaton (Hungary). Hydrobiologia 600: 17-27. Wetzel, R. G., Likens, G. E. (2000): Limnological Analyses. Springer- Verlag, New York. http://sagdb.uni-goettingen.de/culture_media/ll%20 Bacillariophycean%20Medium.pdf (2013.09.30) Photosynthetic characteristic of Nitzschia supralitorea along sulfate gradiens E., Lengyel, A. W., Kovács, Shafik, H. M., C., Stenger-Kovács Abstract: Biota in small saline lakes has to tolerate a huge, multiple stress due to the special chemical and physical features of these lakes. Besides the high conductivity ionic composition also has a significant effect on the diatom assemblages. Saline, alkaline lakes in the Fertő-Hanság region (Hungary) can be described by the sulphate dominancy which could reach value of 1.73 g l'1. The photosynthesis characterization of Nitzschia supralitorea isolated from the mud of Borsodi-dűlő in January 2012 was carried out. The photosynthesis activity was determined along sulphate gradients (0, 50, 600, 1200, 1800, 2500 mg l"1) between 5-40 °C under light intensities of 8, 35, 70,110,200,400, 800, 1200 gmol m'2 s'1, in order to recognize the physiological optimum and tolerance of the species. According to the results, Nitzschia supralitorea had the most intensive photosynthesis between 25 and 35 °C with different sulphate concentrations, where the photoinhibition parameters were approximately 150 p- mol m"2 s'1. The highest photosynthesis activity was recorded in all temperature with the highest sulphate concentration (2500 mg l'1). The results indicate that the Nitzschia supralitorea can be named like a high sulphate and conductivity favour species, the appearance and increase of its abundance could be expected during the summer season as a result of climate change. Keywords: diatom, saline lakes, photosynthesis, sulphate, temperature.
