TY - JOUR AU - Szabó, Sándor AU - Csizmár, Aliz AU - Koleszár, Gergő AU - Oláh, Viktor AU - Birk, Sebastian AU - Peeters, Edwin T. H. M. TI - Density-dependent facilitation and inhibition between submerged and free-floating plants JF - HYDROBIOLOGIA J2 - HYDROBIOLOGIA VL - 851 PY - 2024 SP - 1 EP - 12 PG - 12 SN - 0018-8158 DO - 10.1007/s10750-024-05491-9 UR - https://m2.mtmt.hu/api/publication/34719314 ID - 34719314 N1 - Department of Biology, University of Nyíregyháza, Nyíregyháza, Hungary Doctoral School of Biological Sciences, Hungarian University of Agriculture and Life Sciences, Gödöllő, Hungary Department of Botany, University of Debrecen, Egyetem Square 1, Debrecen, 4032, Hungary Aquatic Ecology, Faculty of Biology, University Duisburg-Essen, Universitätsstraße 5, Essen, 45141, Germany Aquatic Ecology and Water Quality Management Group, Wageningen University, Wageningen, Netherlands Export Date: 18 March 2024; Cited By: 0; Correspondence Address: E.T.H.M. Peeters; Aquatic Ecology and Water Quality Management Group, Wageningen University, Wageningen, Netherlands; email: edwin.peeters@wur.nl; CODEN: HYDRB AB - This study aimed at testing the hypothesis that free-floating plants may facilitate the growth of submerged plants under hypertrophic conditions and intermediate plant density. The effects of Lemna presence on the growth of two submerged plants ( Elodea nuttallii and Ceratophyllum demersum ) over a nitrogen gradient were experimentally investigated. This was complemented with analysing the presence of C. demersum and E. nuttallii in Hungary and in Germany in relation to the density of free-floating plants. Results showed a negative exponential pattern between underwater light intensity and Lemna cover. Ceratophyllum and Elodea relative growth rate decreased with increasing nitrogen concentrations and additional low Lemna density stimulated Ceratophyllum and suppressed Elodea . Elodea decreased linearly with Lemna density while Ceratophyllum showed a unimodal response. Total algal biomass (epiphytic and planktonic) was higher in Ceratophyllum than in Elodea treatments and decreased rapidly with increasing Lemna density. The field studies showed a positive relationship between Ceratophyllum and a negative one between Elodea and free-floating plant cover. This study clearly showed that free-floating plants can have either facilitating or inhibiting impact on the growth of submerged plants depending on cover density and macrophyte species. The facilitating effect on Ceratophyllum is most likely due to suppressing epiphytic algal growth. LA - English DB - MTMT ER - TY - JOUR AU - Oláh, Viktor AU - Kosztankó, Kamilla AU - Irfan, Muhammad AU - Barnáné Szabó, Zsuzsanna AU - Jansen, Marcel A. K AU - Szabó, Sándor AU - Mészáros, Ilona TI - Frond-level analyses reveal functional heterogeneity within heavy metal-treated duckweed colonies JF - PLANT STRESS J2 - PLANT STRESS VL - 11 PY - 2024 PG - 11 SN - 2667-064X DO - 10.1016/j.stress.2024.100405 UR - https://m2.mtmt.hu/api/publication/34628944 ID - 34628944 N1 - Department of Botany, Institute of Biology and Ecology Faculty of Science and Technology, University of Debrecen, Egyetem square 1, Debrecen, Hungary, Zip, Debrecen, H-4032, Hungary School of Biological, Earth and Environmental Science, University College Cork, Distillery Fields, North Mall, Cork, T23N73K, Ireland Department of Biology, University of Nyiregyhaza, Nyiregyhaza, H-4401, Hungary Export Date: 28 February 2024; Cited By: 0; Correspondence Address: V. Oláh; Department of Botany, Institute of Biology and Ecology Faculty of Science and Technology, University of Debrecen, Debrecen, Egyetem square 1, Debrecen, Hungary, Zip, H-4032, Hungary; email: olahviktor@unideb.hu LA - English DB - MTMT ER - TY - CONF AU - Viktor, Löki AU - Jenő, Nagy AU - András, Nagy AU - Dániel, Babai AU - Zsolt, Molnár AU - Balázs, András Lukács AU - Koleszár, Gergő TI - Known but not called by name: recreational fishers’ ecological knowledge of freshwater plants in Hungary T2 - SEFS 13 - Symposium for European Freshwater Sciences PY - 2024 SP - 259 EP - 259 PG - 1 UR - https://m2.mtmt.hu/api/publication/34534014 ID - 34534014 LA - English DB - MTMT ER - TY - CONF AU - Koleszár, Gergő AU - Péter, Tamás Nagy AU - Szabó, Sándor AU - Balázs, András Lukács TI - Key traits in invasion success of an alien submerged plant Cabomba caroliniana T2 - SEFS 13 - Symposium for European Freshwater Sciences PY - 2024 SP - 258 EP - 258 PG - 1 UR - https://m2.mtmt.hu/api/publication/34533966 ID - 34533966 LA - English DB - MTMT ER - TY - CONF AU - Szabó, Sándor AU - Edwin, Peeters AU - Gábor, Várbíró AU - Gábor, Borics AU - Sebastian, Birk AU - Koleszár, Gergő TI - How do epiphytic algae and grazing snails modify the stable states between free-floating and submerged plants? T2 - SEFS 13 - Symposium for European Freshwater Sciences PY - 2024 SP - 222 EP - 222 PG - 1 UR - https://m2.mtmt.hu/api/publication/34514403 ID - 34514403 LA - English DB - MTMT ER - TY - JOUR AU - Irfan, Muhammad AU - Mészáros, Ilona AU - Szabó, Sándor AU - Oláh, Viktor TI - Comparative Phytotoxicity of Metallic Elements on Duckweed Lemna gibba L. Using Growth- and Chlorophyll Fluorescence Induction-Based Endpoints JF - PLANTS-BASEL J2 - PLANTS-BASEL VL - 13 PY - 2024 IS - 2 SN - 2223-7747 DO - 10.3390/plants13020215 UR - https://m2.mtmt.hu/api/publication/34499878 ID - 34499878 N1 - Department of Botany, Institute of Biology and Ecology, Faculty of Science and Technology, University of Debrecen, Egyetem Square 1, Debrecen, H-4032, Hungary Department of Biology, Institute of Environmental Sciences, University of Nyiregyhaza, Nyiregyhaza, H-4401, Hungary Export Date: 01 February 2024; Cited By: 0; Correspondence Address: V. Oláh; Department of Botany, Institute of Biology and Ecology, Faculty of Science and Technology, University of Debrecen, Debrecen, Egyetem Square 1, H-4032, Hungary; email: olahviktor@unideb.hu AB - In this study, we exposed a commonly used duckweed species—Lemna gibba L.—to twelve environmentally relevant metals and metalloids under laboratory conditions. The phytotoxic effects were evaluated in a multi-well-plate-based experimental setup by means of the chlorophyll fluorescence imaging method. This technique allowed the simultaneous measuring of the growth and photosynthetic parameters in the same samples. The inhibition of relative growth rates (based on frond number and area) and photochemical efficiency (Fv/Fo and Y(II)) were both calculated from the obtained chlorophyll fluorescence images. In the applied test system, growth-inhibition-based phytotoxicity endpoints proved to be more sensitive than chlorophyll-fluorescence-based ones. Frond area growth inhibition was the most responsive parameter with a median EC50 of 1.75 mg L−1, while Fv/Fo, the more responsive chlorophyll-fluorescence-based endpoint, resulted in a 5.34 mg L−1 median EC50 for the tested metals. Ag (EC50 0.005–1.27 mg L−1), Hg (EC50 0.24–4.87 mg L−1) and Cu (EC50 0.37–1.86 mg L−1) were the most toxic elements among the tested ones, while As(V) (EC50 47.15–132.18 mg L−1), Cr(III) (EC50 6.22–19.92 mg L−1), Se(VI) (EC50 1.73–10.39 mg L−1) and Zn (EC50 3.88–350.56 mg L−1) were the least toxic ones. The results highlighted that multi-well-plate-based duckweed phytotoxicity assays may reduce space, time and sample volume requirements compared to the standard duckweed growth inhibition tests. These benefits, however, come with lowered test sensitivity. Our multi-well-plate-based test setup resulted in considerably higher median EC50 (3.21 mg L−1) for frond-number-based growth inhibition than the 0.683 mg L−1 median EC50 derived from corresponding data from the literature with standardized Lemna-tests. Under strong acute phytotoxicity, frond parts with impaired photochemical functionality may become undetectable by chlorophyll fluorometers. Consequently, the plant parts that are still detectable display a virtually higher average photosynthetic performance, leading to an underestimation of phytotoxicity. Nevertheless, multi-well-plate-based duckweed phytotoxicity assays, combined with chlorophyll fluorescence imaging, offer definite advantages in the rapid screening of large sample series or multiple species/clones. As chlorophyll fluorescence images provide information both on the photochemical performance of the test plants and their morphology, a joint analysis of the two endpoint groups is recommended in multi-well-plate-based duckweed phytotoxicity assays to maximize the information gained from the tests. LA - English DB - MTMT ER - TY - JOUR AU - Lukács, Áron AU - Szabó, Sándor AU - Török-Krasznai, Enikő AU - Görgényi, Judit AU - Kókai, Zsuzsanna AU - Bácsiné Béres, Viktória AU - Borics, Gábor TI - Metaphyton contributes to open water phytoplankton diversity JF - HYDROBIOLOGIA J2 - HYDROBIOLOGIA VL - 851 PY - 2024 SP - 941 EP - 958 PG - 18 SN - 0018-8158 DO - 10.1007/s10750-023-05314-3 UR - https://m2.mtmt.hu/api/publication/34093793 ID - 34093793 N1 - Centre for Ecological Research, Department of Tisza Research, Institute of Aquatic Ecology, Bem square 18/c, Debrecen, 4026, Hungary Department of Ecology, University of Debrecen, Egyetem square 1, Debrecen, 4032, Hungary Department of Biology, University of Nyíregyháza, PO Box 166, Nyíregyháza, 4401, Hungary Export Date: 25 September 2023 CODEN: HYDRB Correspondence Address: Lukács, Á.; Centre for Ecological Research, Bem square 18/c, Hungary; email: lukacsaron93@gmail.com AB - In contrast to pelagic and benthic realms of the aquatic ecosystems, studies on the metaphytic habitats remain underrepresented in the literature. However, this realm may have a potential impact on composition and diversity of the open water assemblages through metacommunity processes (source-sink dynamics, mass-effect) especially in small ponds with extended littoral zone. Using a limnocorral experiment we studied how metaphyton affects diversity and composition of open water phytoplankton in a small eutrophic pond in the vegetation period. The three habitats (metaphyton, isolated and non-isolated open water) showed considerable differences in their taxa and functional group composition. Abundance-based diversity measures did not reveal remarkable differences among the assemblages of the three habitats. However, taxonomic and functional richness of the metaphyton and the non-isolated part of the pelagial significantly exceeded that of the limnocorral. Incidence-based similarity index values also showed closer resemblance of the metaphyton and plankton samples compared to that of the limnocorral. In the case of several functional groups, their functional redundancy in the metaphyton exceeded that in the open water areas. These results suggest that the metaphyton provides a refuge for several euplanktic elements that survive in the littoral and occasionally enrich the phytoplankton of the open water areas, representing that a within–lake metacommunity processes shape the composition and functioning of the open water areas in standing waters. LA - English DB - MTMT ER - TY - JOUR AU - Koleszár, Gergő AU - Szabó, Sándor AU - Kékedi, Levente AU - Löki, Viktor AU - Botta-Dukát, Zoltán AU - Lukács, Balázs András TI - Intraspecific trait variability is relevant in assessing differences in functional composition between native and alien aquatic plant communities JF - HYDROBIOLOGIA J2 - HYDROBIOLOGIA PY - 2024 PG - 14 SN - 0018-8158 DO - 10.1007/s10750-023-05313-4 UR - https://m2.mtmt.hu/api/publication/34078234 ID - 34078234 N1 - Online Published: 26 July 2023 Department of Biology, University of Nyíregyháza, Nyíregyháza, Hungary Wetland Ecology Research Group, Centre for Ecological Research, IAE, Debrecen, Hungary Large-Scale Vegetation Ecology Research Group, Centre for Ecological Research, IBE, Budapest, Hungary National Multidisciplinary Laboratory for Climate Change, Centre for Ecological Research, IAE, Budapest, Hungary Export Date: 19 October 2023 CODEN: HYDRB Correspondence Address: Lukács, B.A.; Wetland Ecology Research Group, Hungary; email: lukacs.balazs@ecolres.hu AB - The loss of plant functional diversity associated with biological invasion is a main subject of invasion biology, but still understudied in case of aquatic plants. We calculated functional richness, evenness, divergence and community-weighted mean trait values of aquatic plant communities for 20 plots, half invaded and half non-invaded by alien species, in a thermal effluent of West Hungary. Three traits [specific leaf area (SLA), leaf dry matter content (LDMC), leaf area (LA)] were considered to explain how alien species alter ecosystem function. We differentiated interspecific and intraspecific trait variation and investigate its effect on the community-level functional diversity. We found that alien species invasion causes significant changes in the functional composition of aquatic plants whereby alien species become able to absorb light more efficiently, which will directly enhance their increased biomass production. Our study highlights the importance of local adaptation, showing that calculating functional diversity with global pooling of trait measurements causes significant over- or underestimation of functional diversity indices. Consequently, this can potentially result in erroneous conclusions regarding the impact of invasion. LA - English DB - MTMT ER - TY - JOUR AU - Marjakangas, Emma-Liina AU - Bosco, Laura AU - Versluijs, Martijn AU - Xu, Yanjie AU - Santangeli, Andrea AU - Holopainen, Sari AU - Maekelaeinen, Sanna AU - Herrando, Sergi AU - Keller, Verena AU - Vorisek, Petr AU - Brotons, Lluis AU - Johnston, Alison AU - Prince, Karine AU - Willis, Stephen G. AU - Aghababyan, Karen AU - Ajder, Vitalie AU - Balmer, Dawn E. AU - Bino, Taulant AU - Boyla, Kerem Ali AU - Chodkiewicz, Tomasz AU - del, Moral Juan Carlos AU - Mazal, Vlatka Dumbovic AU - Ferrarini, Alessandro AU - Godinho, Carlos AU - Gustin, Marco AU - Kalyakin, Mikhail AU - Knaus, Peter AU - Kuzmenko, Tatiana AU - Lindstroem, Ake AU - Maxhuni, Qenan AU - Molina, Blas AU - Nagy, Karoly AU - Radisic, Dimitrije AU - Rajkov, Sasa AU - Rajkovic, Drazenko Z. AU - Raudoniki, Liutauras AU - Sjenicic, Jovica AU - Stoychev, Stoycho AU - Szép, Tibor AU - Teufelbauer, Norbert AU - Ursul, Silvia AU - van, Turnhout Chris A. M. AU - Velevski, Metodija AU - Vikstrom, Thomas AU - Wilk, Tomasz AU - Voltzit, Olga AU - Oien, Ingar Jostein AU - Sudfeldt, Christoph AU - Gerlach, Bettina AU - Shimmings, Paul AU - Lehikoinen, Aleksi TI - Correction for Marjakangas et al., Ecological barriers mediate spatiotemporal shifts of bird communities at a continental scale JF - PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA J2 - P NATL ACAD SCI USA VL - 120 PY - 2023 IS - 30 SN - 0027-8424 DO - 10.1073/pnas.2310628120 UR - https://m2.mtmt.hu/api/publication/34557494 ID - 34557494 N1 - This corrects the article "Ecological barriers mediate spatiotemporal shifts of bird communities at a continental scale" in volume 120, e2213330120. LA - English DB - MTMT ER - TY - CONF AU - Szabó, Sándor AU - Koleszár, Gergő AU - Zoltán, Nagy AU - Mihály, Barun AU - Sebastian, Birk AU - Edwin, Peeters ED - Jonas, Schoelynck ED - Bart, Slootmaekers ED - Giulia, Lodi TI - Sustaining stable states between submerged and free-floating vegetation T2 - 16th International Symposium on Aquatic Plants PB - University of Antwerp C1 - Antwerp PY - 2023 SP - 62 UR - https://m2.mtmt.hu/api/publication/34421144 ID - 34421144 LA - English DB - MTMT ER -