@article{MTMT:34719314, title = {Density-dependent facilitation and inhibition between submerged and free-floating plants}, url = {https://m2.mtmt.hu/api/publication/34719314}, author = {Szabó, Sándor and Csizmár, Aliz and Koleszár, Gergő and Oláh, Viktor and Birk, Sebastian and Peeters, Edwin T. H. M.}, doi = {10.1007/s10750-024-05491-9}, journal-iso = {HYDROBIOLOGIA}, journal = {HYDROBIOLOGIA}, volume = {851}, unique-id = {34719314}, issn = {0018-8158}, abstract = {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.}, year = {2024}, eissn = {1573-5117}, pages = {1-12}, orcid-numbers = {Oláh, Viktor/0000-0001-5410-5914; Peeters, Edwin T. H. M./0000-0003-2541-1829} } @article{MTMT:34628944, title = {Frond-level analyses reveal functional heterogeneity within heavy metal-treated duckweed colonies}, url = {https://m2.mtmt.hu/api/publication/34628944}, author = {Oláh, Viktor and Kosztankó, Kamilla and Irfan, Muhammad and Barnáné Szabó, Zsuzsanna and Jansen, Marcel A. K and Szabó, Sándor and Mészáros, Ilona}, doi = {10.1016/j.stress.2024.100405}, journal-iso = {PLANT STRESS}, journal = {PLANT STRESS}, volume = {11}, unique-id = {34628944}, issn = {2667-064X}, keywords = {ontogeny; duckweed; heavy metal stress; Chlorophyll fluorescence imaging}, year = {2024}, orcid-numbers = {Oláh, Viktor/0000-0001-5410-5914} } @CONFERENCE{MTMT:34534014, title = {Known but not called by name: recreational fishers’ ecological knowledge of freshwater plants in Hungary}, url = {https://m2.mtmt.hu/api/publication/34534014}, author = {Viktor, Löki and Jenő, Nagy and András, Nagy and Dániel, Babai and Zsolt, Molnár and Balázs, András Lukács and Koleszár, Gergő}, booktitle = {SEFS 13 - Symposium for European Freshwater Sciences}, unique-id = {34534014}, year = {2024}, pages = {259-259} } @CONFERENCE{MTMT:34533966, title = {Key traits in invasion success of an alien submerged plant Cabomba caroliniana}, url = {https://m2.mtmt.hu/api/publication/34533966}, author = {Koleszár, Gergő and Péter, Tamás Nagy and Szabó, Sándor and Balázs, András Lukács}, booktitle = {SEFS 13 - Symposium for European Freshwater Sciences}, unique-id = {34533966}, year = {2024}, pages = {258-258} } @CONFERENCE{MTMT:34514403, title = {How do epiphytic algae and grazing snails modify the stable states between free-floating and submerged plants?}, url = {https://m2.mtmt.hu/api/publication/34514403}, author = {Szabó, Sándor and Edwin, Peeters and Gábor, Várbíró and Gábor, Borics and Sebastian, Birk and Koleszár, Gergő}, booktitle = {SEFS 13 - Symposium for European Freshwater Sciences}, unique-id = {34514403}, year = {2024}, pages = {222-222} } @article{MTMT:34499878, title = {Comparative Phytotoxicity of Metallic Elements on Duckweed Lemna gibba L. Using Growth- and Chlorophyll Fluorescence Induction-Based Endpoints}, url = {https://m2.mtmt.hu/api/publication/34499878}, author = {Irfan, Muhammad and Mészáros, Ilona and Szabó, Sándor and Oláh, Viktor}, doi = {10.3390/plants13020215}, journal-iso = {PLANTS-BASEL}, journal = {PLANTS-BASEL}, volume = {13}, unique-id = {34499878}, abstract = {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.}, year = {2024}, eissn = {2223-7747}, orcid-numbers = {Irfan, Muhammad/0000-0002-5124-9055; Mészáros, Ilona/0000-0001-8841-730X; Szabó, Sándor/0000-0001-8501-4716; Oláh, Viktor/0000-0001-5410-5914} } @article{MTMT:34093793, title = {Metaphyton contributes to open water phytoplankton diversity}, url = {https://m2.mtmt.hu/api/publication/34093793}, author = {Lukács, Áron and Szabó, Sándor and Török-Krasznai, Enikő and Görgényi, Judit and Kókai, Zsuzsanna and Bácsiné Béres, Viktória and Borics, Gábor}, doi = {10.1007/s10750-023-05314-3}, journal-iso = {HYDROBIOLOGIA}, journal = {HYDROBIOLOGIA}, volume = {851}, unique-id = {34093793}, issn = {0018-8158}, abstract = {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.}, keywords = {functional groups; Species richness; source-sink dynamics; Limnocorral; Metaphyton}, year = {2024}, eissn = {1573-5117}, pages = {941-958}, orcid-numbers = {Lukács, Áron/0000-0003-3617-2843; Kókai, Zsuzsanna/0000-0003-0315-9343} } @article{MTMT:34078234, title = {Intraspecific trait variability is relevant in assessing differences in functional composition between native and alien aquatic plant communities}, url = {https://m2.mtmt.hu/api/publication/34078234}, author = {Koleszár, Gergő and Szabó, Sándor and Kékedi, Levente and Löki, Viktor and Botta-Dukát, Zoltán and Lukács, Balázs András}, doi = {10.1007/s10750-023-05313-4}, journal-iso = {HYDROBIOLOGIA}, journal = {HYDROBIOLOGIA}, unique-id = {34078234}, issn = {0018-8158}, abstract = {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.}, keywords = {macrophytes; Community assembly; intraspecific trait variability; Optimal pooling}, year = {2024}, eissn = {1573-5117}, orcid-numbers = {Botta-Dukát, Zoltán/0000-0002-9544-3474} } @article{MTMT:34557494, title = {Correction for Marjakangas et al., Ecological barriers mediate spatiotemporal shifts of bird communities at a continental scale}, url = {https://m2.mtmt.hu/api/publication/34557494}, author = {Marjakangas, Emma-Liina and Bosco, Laura and Versluijs, Martijn and Xu, Yanjie and Santangeli, Andrea and Holopainen, Sari and Maekelaeinen, Sanna and Herrando, Sergi and Keller, Verena and Vorisek, Petr and Brotons, Lluis and Johnston, Alison and Prince, Karine and Willis, Stephen G. and Aghababyan, Karen and Ajder, Vitalie and Balmer, Dawn E. and Bino, Taulant and Boyla, Kerem Ali and Chodkiewicz, Tomasz and del, Moral Juan Carlos and Mazal, Vlatka Dumbovic and Ferrarini, Alessandro and Godinho, Carlos and Gustin, Marco and Kalyakin, Mikhail and Knaus, Peter and Kuzmenko, Tatiana and Lindstroem, Ake and Maxhuni, Qenan and Molina, Blas and Nagy, Karoly and Radisic, Dimitrije and Rajkov, Sasa and Rajkovic, Drazenko Z. and Raudoniki, Liutauras and Sjenicic, Jovica and Stoychev, Stoycho and Szép, Tibor and Teufelbauer, Norbert and Ursul, Silvia and van, Turnhout Chris A. M. and Velevski, Metodija and Vikstrom, Thomas and Wilk, Tomasz and Voltzit, Olga and Oien, Ingar Jostein and Sudfeldt, Christoph and Gerlach, Bettina and Shimmings, Paul and Lehikoinen, Aleksi}, doi = {10.1073/pnas.2310628120}, journal-iso = {P NATL ACAD SCI USA}, journal = {PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA}, volume = {120}, unique-id = {34557494}, issn = {0027-8424}, year = {2023}, eissn = {1091-6490} } @CONFERENCE{MTMT:34421144, title = {Sustaining stable states between submerged and free-floating vegetation}, url = {https://m2.mtmt.hu/api/publication/34421144}, author = {Szabó, Sándor and Koleszár, Gergő and Zoltán, Nagy and Mihály, Barun and Sebastian, Birk and Edwin, Peeters}, booktitle = {16th International Symposium on Aquatic Plants}, unique-id = {34421144}, year = {2023}, pages = {62} }