TY - JOUR AU - Koma, Zsófia AU - Zlinszky, András AU - Bekő, László AU - Burai, Péter AU - Seijmonsbergen, Arie C. AU - Kissling, W. Daniel TI - Quantifying 3D vegetation structure in wetlands using differently measured airborne laser scanning data JF - ECOLOGICAL INDICATORS J2 - ECOL INDIC VL - 127 PY - 2021 SN - 1470-160X DO - 10.1016/j.ecolind.2021.107752 UR - https://m2.mtmt.hu/api/publication/32077627 ID - 32077627 AB - Mapping and quantifying 3D vegetation structure is essential for assessing and monitoring ecosystem structure and function within wetlands. Airborne Laser Scanning (ALS) is a promising data source for developing indicators of 3D vegetation structure, but derived metrics are often not compared with 3D structural field measurements and the acquisition of ALS data is rarely standardized across different remote sensing surveys. Here, we compare a set of Light Detection And Ranging (LiDAR) metrics derived from ALS datasets with varying characteristics to a standardized set of field measurements of vegetation height, biomass and Leaf Area Index (LAI) across three Hungarian lakes (Lake Balaton, Lake Fert.o and Lake Tisza). The ALS datasets differed in whether the recording type was full waveform (FWF) or discrete return, and in their point density (4 pt/m(2) and 21 pt/m(2)). A total of eight LiDAR metrics captured radiometric information as well as descriptors of vegetation cover, height and vertical variability. Multivariate regression models with field-based measurements of vegetation height, biomass or LAI as response variable and LiDAR metrics as predictors showed major differences between ALS recording types, and were affected by differences in spatial resolution, temporal offset and seasonality between field and ALS data acquisition. Vegetation height could be estimated with high to intermediate accuracy (FWF ALS data only: R-2 = 0.84; combination of ALS datasets: R-2 = 0.67), demonstrating its potential as a robust indicator of 3D vegetation structure across different ALS datasets. In contrast, the estimation of biomass and LAI in these wetlands was sensitive to variation in ALS characteristics and to the discrepancies between field and ALS data in terms of spatial resolution, temporal offset and seasonality (biomass: R-2 = 0.20-0.22; LAI: R-2 = 0.08-0.30). We recommend the use of FWF ALS data within wetlands because it captures more vegetation structural details in dense reed and marshland vegetation. We further suggest that ecologists and remote sensing scientist should better coordinate the simultaneous and standardized acquisition of field and ALS data for testing the robustness of quantitative descriptors of vegetation cover, height and vertical variability within wetlands. This is important for establishing operational and spatially contiguous ALS-based indicators of 3D ecosystem structure across wetlands. LA - English DB - MTMT ER - TY - JOUR AU - Rabouille, Sophie AU - Campbell, Douglas A. AU - Masuda, Takako AU - Zavřel, Tomáš AU - Bernát, Gábor AU - Polerecky, Lubos AU - Halsey, Kimberly AU - Eichner, Meri AU - Kotabová, Eva AU - Stephan, Susanne AU - Lukeš, Martin AU - Claquin, Pascal AU - Bonomi-Barufi, José AU - Lombardi, Ana Teresa AU - Červený, Jan AU - Suggett, David J. AU - Giordano, Mario AU - Kromkamp, Jacco C. AU - Prášil, Ondřej TI - Electron & Biomass Dynamics of Cyanothece Under Interacting Nitrogen & Carbon Limitations JF - FRONTIERS IN MICROBIOLOGY J2 - FRONT MICROBIOL VL - 12 PY - 2021 SN - 1664-302X DO - 10.3389/fmicb.2021.617802 UR - https://m2.mtmt.hu/api/publication/31958429 ID - 31958429 N1 - Cited By :3 Export Date: 5 September 2022 LA - English DB - MTMT ER - TY - JOUR AU - Bernát, Gábor AU - Zavřel, Tomáš AU - Kotabová, Eva AU - Kovács, László AU - Steinbach, Gábor AU - Vörös, Lajos AU - Prášil, Ondřej AU - Somogyi, Boglárka AU - Tóth, Viktor R. TI - Photomorphogenesis in the Picocyanobacterium Cyanobium gracile Includes Increased Phycobilisome Abundance Under Blue Light, Phycobilisome Decoupling Under Near Far-Red Light, and Wavelength-Specific Photoprotective Strategies JF - FRONTIERS IN PLANT SCIENCE J2 - FRONT PLANT SCI VL - 12 PY - 2021 PG - 16 SN - 1664-462X DO - 10.3389/fpls.2021.612302 UR - https://m2.mtmt.hu/api/publication/31920580 ID - 31920580 LA - English DB - MTMT ER - TY - JOUR AU - Polerecky, Lubos AU - Masuda, Takako AU - Eichner, Meri AU - Rabouille, Sophie AU - Vancová, Marie AU - Kienhuis, Michiel V. M. AU - Bernát, Gábor AU - Bonomi-Barufi, Jose AU - Campbell, Douglas Andrew AU - Claquin, Pascal AU - Červený, Jan AU - Giordano, Mario AU - Kotabová, Eva AU - Kromkamp, Jacco AU - Lombardi, Ana Teresa AU - Lukeš, Martin AU - Prášil, Ondrej AU - Stephan, Susanne AU - Suggett, David AU - Zavřel, Tomas AU - Halsey, Kimberly H. TI - Temporal Patterns and Intra- and Inter-Cellular Variability in Carbon and Nitrogen Assimilation by the Unicellular Cyanobacterium Cyanothece sp. ATCC 51142 JF - FRONTIERS IN MICROBIOLOGY J2 - FRONT MICROBIOL VL - 12 PY - 2021 SN - 1664-302X DO - 10.3389/fmicb.2021.620915 UR - https://m2.mtmt.hu/api/publication/31847645 ID - 31847645 AB - Unicellular nitrogen fixing cyanobacteria (UCYN) are abundant members of phytoplankton communities in a wide range of marine environments, including those with rapidly changing nitrogen (N) concentrations. We hypothesized that differences in N availability (N2 vs. combined N) would cause UCYN to shift strategies of intracellular N and C allocation. We used transmission electron microscopy and nanoscale secondary ion mass spectrometry imaging to track assimilation and intracellular allocation of 13C-labeled CO2 and 15N-labeled N2 or NO3 at different periods across a diel cycle in Cyanothece sp. ATCC 51142. We present new ideas on interpreting these imaging data, including the influences of pre-incubation cellular C and N contents and turnover rates of inclusion bodies. Within cultures growing diazotrophically, distinct subpopulations were detected that fixed N2 at night or in the morning. Additional significant within-population heterogeneity was likely caused by differences in the relative amounts of N assimilated into cyanophycin from sources external and internal to the cells. Whether growing on N2 or NO3, cells prioritized cyanophycin synthesis when N assimilation rates were highest. N assimilation in cells growing on NO3 switched from cyanophycin synthesis to protein synthesis, suggesting that once a cyanophycin quota is met, it is bypassed in favor of protein synthesis. Growth on NO3 also revealed that at night, there is a very low level of CO2 assimilation into polysaccharides simultaneous with their catabolism for protein synthesis. This study revealed multiple, detailed mechanisms underlying C and N management in Cyanothece that facilitate its success in dynamic aquatic environments. LA - English DB - MTMT ER - TY - JOUR AU - Pálffy, Károly AU - Kovács, Attila AU - Kardos, Vivien AU - Hausz, Imola AU - Boros, Gergely TI - Elevated temperature results in higher compositional variability of pioneer phytoplankton communities in a mesocosm system JF - JOURNAL OF PLANKTON RESEARCH J2 - J PLANKTON RES VL - 43 PY - 2021 IS - 2 SP - 142 EP - 155 PG - 14 SN - 0142-7873 DO - 10.1093/plankt/fbab013 UR - https://m2.mtmt.hu/api/publication/31847554 ID - 31847554 LA - English DB - MTMT ER - TY - JOUR AU - Feilhauer, Hannes AU - Zlinszky, András AU - Kania, Adam AU - Foody, Giles M. AU - Doktor, Daniel AU - Lausch, Angela AU - Schmidtlein, Sebastian TI - Let your maps be fuzzy!—Class probabilities and floristic gradients as alternatives to crisp mapping for remote sensing of vegetation JF - REMOTE SENSING IN ECOLOGY AND CONSERVATION J2 - REMOTE SENS ECOL CON VL - 7 PY - 2021 IS - 2 SP - 292 EP - 305 PG - 14 SN - 2056-3485 DO - 10.1002/rse2.188 UR - https://m2.mtmt.hu/api/publication/31679872 ID - 31679872 LA - English DB - MTMT ER - TY - JOUR AU - Farkas, Milán AU - Kaszab, Edit AU - Radó, Júlia AU - Háhn, Judit AU - Tóth, Gergő AU - Harkai, Péter AU - Ferincz, Árpád AU - Lovász, Zsófia AU - Táncsics, András AU - Vörös, Lajos AU - Kriszt, Balázs AU - Szoboszlay, Sándor TI - Planktonic and Benthic Bacterial Communities of the Largest Central European Shallow Lake, Lake Balaton and Its Main Inflow Zala River JF - CURRENT MICROBIOLOGY J2 - CURR MICROBIOL VL - 77 PY - 2020 IS - 12 SP - 4016 EP - 4028 PG - 13 SN - 0343-8651 DO - 10.1007/s00284-020-02241-7 UR - https://m2.mtmt.hu/api/publication/31636077 ID - 31636077 AB - Lake Balaton is the largest European shallow lake, which underwent cultural eutrophication in the ‘70–80s. Therefore, strict pollution control measures were introduced and the water quality has become meso-eutrophic since the millennium. Due to the touristic significance and change in trophic levels of the lake, numerous ecological studies were carried out, but none of them was focused on both benthic and planktonic microbial communities at the same time. In our study, an attempt was made to reveal the spatial bacterial heterogeneity of the Lake Balaton and Zala River by 16S rDNA terminal restriction fragment length polymorphism fingerprinting and Illumina amplicon sequencing methods in the summer of 2017. According to the molecular biology results, mostly well-known freshwater microorganisms, adapted to nutrient-poor conditions were found in the pelagic water column. The LD12 subclade member Fonsibacter ubiquis, the cyanobacterial Synechococcus sp. and unknown Verrucomicrobia species were abundant in the less nutrient-dense basins, while the hgcI clade members showed various distribution. In the estuary and in the nutrient-dense western part of the lake, some eutrophic conditions preferring cyanobacteria (filamentous Anabaena and Aphanizomenon species) were also detectable. The benthic microbial community showed higher diversity, according to the observed appearance of microorganisms adapted to the deeper, less aerated layers (e.g. members of Desulfobacteraceae, Nitrosomonadaceae). LA - English DB - MTMT ER - TY - CHAP AU - Síkhegyi, Ferenc AU - Timár, Gábor AU - Brezsnyánszky, Károly AU - Galambos, Csilla AU - Zlinszky, András ED - Babinszki, Edit ED - Horváth, Ferenc TI - A Balaton ábrázolása térképeken T2 - A Balaton kutatása Lóczy Lajos nyomdokán PB - Magyarhoni Földtani Társulat CY - Budapest SN - 9789638221810 PY - 2020 SP - 311 EP - 339 PG - 29 UR - https://m2.mtmt.hu/api/publication/31607500 ID - 31607500 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Szabó-Tugyi, Nóra AU - Tóth, Viktor R. TI - Interaction among bacterioplankton and macrophytes in shallow lakes with high macrophyte cover JF - AQUATIC SCIENCES J2 - AQUAT SCI VL - 82 PY - 2020 IS - 4 SN - 1015-1621 DO - 10.1007/s00027-020-00753-9 UR - https://m2.mtmt.hu/api/publication/31592032 ID - 31592032 LA - English DB - MTMT ER - TY - JOUR AU - Bernát, Gábor AU - Boross, Nóra AU - Somogyi, Boglárka AU - Vörös, Lajos AU - G.-Tóth, László AU - Boros, Gergely TI - Oligotrophication of Lake Balaton over a 20-year period and its implications for the relationship between phytoplankton and zooplankton biomass JF - HYDROBIOLOGIA J2 - HYDROBIOLOGIA VL - 847 PY - 2020 SP - 3999 EP - 4013 PG - 15 SN - 0018-8158 DO - 10.1007/s10750-020-04384-x UR - https://m2.mtmt.hu/api/publication/31529338 ID - 31529338 N1 - Funding Agency and Grant Number: ELKH Centre for Ecological Research Funding text: Open access funding provided by ELKH Centre for Ecological Research. LA - English DB - MTMT ER -