Department of Hydrobotany

Head of Department: Présing Mátyás, CSc

Algology Research Team

The research team studies the species composition and dynamics of phytoplankton (pico-, nano- and microplankton), phytobenthos and periphyton communities. Long term phytoplankton monitoring is continued in the four basins of the lake. The components and the function of the microbial loop are studied. The light and temperature dependency of the growth and photosynthesis of the phytoplankton, phytobenthos and periphyton communities are investigated. Studies on the diversity and production of autotrophic picoplankton in shallow lakes are in progress. Measurements are conducted on the underwater light climate. The research team constructed an algal culture collection (Algal Culture Tihany=ACT) containing the most abundant and characteristic cyanobacteria (picocyanobacteria, N-fixing filamentous cyanobacteria etc.), diatoms and green algae of Lake Balaton and various strains from other shallow lakes.

SOMOGYI, Boglárka PhD, team leader somogyi.boglarkaemail_cim,
VÖRÖS, Lajos DSc voros.lajosemail_cim,
KOVÁCS, Attila PhD kovacs.attilaemail_cim,
TÓTH, Viktor PhD toth.viktoremail_cim,
KERESZTES, Zsolt MSc keresztes.zsoltemail_cim,
PALMER, Stephanie MSc stephanie.palmeremail_cim,
PÁLFFY, Károly MSc palffy.karolyemail_cim,
ext#129, 225
STRATOULIAS, Dimitris MSc dimitris.stratouliasemail_cim,
ZLINSZKY, András MSc zlinszky.andrasemail_cim,
ext#218, 221
NÉMETH, Balázs technician nemeth.balazsemail_cim,
SZABÓ, Tímea technician szabo.timeaemail_cim,
KOLTAI, Éva Erzsébet technician koltai.evaemail_cim,
ext#122, 225

Nutrient Cycling Research Team

The research activity of the working team is focused on the cycling of the main nutrients (carbon, nitrogen and phosphorus). The aim of investigation is to predict the effect of the change in nutrient load and water level on the water quality of Lake Balaton. The concentrations of the different phosphorus and nitrogen forms in the water column and sediment are regularly analysed. Uptake of phosphorus and nitrogen are studied using 32P and 15N labelled compounds, both under natural conditions and in pure cultures. Experiments are conducted on the competition between the bacteria and algae for these resources. Atmospheric nitrogen fixation, ammonium regeneration and denitrification processes in the water column and sediment are investigated. The origin, physical and chemical characteristics of the dissolved organic (humic) compounds, their bioavailability and contribution to the carbon pool, transformations, degradation due to UV radiation and their ecological effects are studied.

PRÉSING, Mátyás CSc, team leader presing.matyasemail_cim,
ext#212, 128, 232
HERODEK, Sándor DSc herodek.sandoremail_cim,
V.-BALOGH, Katalin CSc v-balogh.katalinemail_cim,
BOROS, Emil PhD boros.emilemail_cim,
HORVÁTH, Hajnalka MSc horvath.hajnalkaemail_cim,
HORVÁTH, Terézia technician horvath.tereziaemail_cim,
HORVÁTH, Viktória technician horvath.viktoriaemail_cim,
KELEMEN, Rozália Anett technician kelemen.anettemail_cim,
ext#128, 122