caa a22 4500 445891866 CHVBK 20180317145619.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10750-010-0396-3 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0396-3 Primary production of epipsammic algal communities in Lake Balaton (Hungary) [Elektronische Daten] [Viktória Üveges, Lajos Vörös, Judit Padisák, Attila Kovács] Benthic algal communities can play an important role in matter and energy flux of shallow lakes. Their contribution to total primary production of lakes has been largely unexplored. The aim of this study was to estimate the primary production of the epipsammic algal communities at different water depths in Lake Balaton (Hungary) with photosynthetic measurements performed in laboratory. The photosynthesis of the benthic algae of different origin was studied at nine different irradiance levels, in three replicates. The maximum photosynthetic rate (P max) was always higher in samples from the shallow parts than those from the deeper regions of the lake. Along the west-east longitudinal axis of the lake P max decreased in the southern part and increased in the middle of the lake as a consequence of differences in the chlorophyll-a concentrations. Knowing P max, I k, global radiation and extinction coefficient, the primary production (mgCm−2day−1) of the epipsammic algal community was calculated at different water depths. In the shallow regions at 0.5 and 1m water depth 75-95% and 60-85% of the production was attributable to the epipsammon. The percentage contribution of epipsammon was at 2m water depth 20-65%. In the deeper pelagic region (>3m) more than 85% of the primary production originated from the phytoplankton. Springer Science+Business Media B.V., 2010 Epipsammic algal communities nationallicence Laboratory measurement nationallicence Primary production nationallicence P max nationallicence Lake Balaton nationallicence Üveges Viktória Department of Limnology, University of Pannonia, Egyetem str. 10, 8200, Veszprém, Hungary aut Vörös Lajos Balaton Limnological Research Institute of Hungarian Academy of Sciences, Klebelsberg Kuno str. 3, 8237, Tihany, Hungary aut Padisák Judit Department of Limnology, University of Pannonia, Egyetem str. 10, 8200, Veszprém, Hungary aut Kovács Attila Balaton Limnological Research Institute of Hungarian Academy of Sciences, Klebelsberg Kuno str. 3, 8237, Tihany, Hungary aut Hydrobiologia Springer Netherlands 660/1(2011-02-01), 17-27 0018-8158 660:1<17 2011 660 10750 https://doi.org/10.1007/s10750-010-0396-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0396-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Üveges Viktória Department of Limnology, University of Pannonia, Egyetem str. 10, 8200, Veszprém, Hungary aut NATIONALLICENCE 700 1- Vörös Lajos Balaton Limnological Research Institute of Hungarian Academy of Sciences, Klebelsberg Kuno str. 3, 8237, Tihany, Hungary aut NATIONALLICENCE 700 1- Padisák Judit Department of Limnology, University of Pannonia, Egyetem str. 10, 8200, Veszprém, Hungary aut NATIONALLICENCE 700 1- Kovács Attila Balaton Limnological Research Institute of Hungarian Academy of Sciences, Klebelsberg Kuno str. 3, 8237, Tihany, Hungary aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 660/1(2011-02-01), 17-27 0018-8158 660:1<17 2011 660 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer