A5021205363- Aquatic Ecosystems and Phytoplankton Dynamics
- Aquatic Invertebrate Ecology and Behavior
- Marine and environmental studies
- Fish Ecology and Management Studies
- Botany and Plant Ecology Studies
- Marine Invertebrate Physiology and Ecology
- Heavy metals in environment
- Freshwater macroinvertebrate diversity and ecology
- Geology and Paleoclimatology Research
- Marine and coastal ecosystems
- Microbial Community Ecology and Physiology
- Botany, Ecology, and Taxonomy Studies
- Methane Hydrates and Related Phenomena
- Flowering Plant Growth and Cultivation
- Mercury impact and mitigation studies
- Animal testing and alternatives
- Ecology and biodiversity studies
- Seed Germination and Physiology
- Plant tissue culture and regeneration
- Integrated Water Resources Management
- Isotope Analysis in Ecology
- Paleontology and Stratigraphy of Fossils
- Gut microbiota and health
- Mine drainage and remediation techniques
- Groundwater and Isotope Geochemistry
University of Debrecen
2011-2024
Studying contemporary and subfossil Cladocera (Crustacea) communities, we explored the effect of top-down stressors on cladoceran communities; are also interested in coherence communities. The studied Cibakháza oxbow lake is E Hungary, left-floodplain River Tisza; it a large, long, shallow lake. Three areas were distinguished based strength stress: protected area with low stress, biomanipulated high recreational moderate stress. Altogether, identified 28 taxa communities We found that...
<title>Abstract</title> Microbes from the surrounding environment serve as potential colonizers for animal microbiome. We studied impact of environmental water on microbial communities in freshwater <italic>Hydra</italic> using correlational and experimental methods. polyps samples were collected 15 Hungarian lakes, bacterial community composition was assessed via 16S sequencing. Correlation analyses neutral modeling evaluated microbiota geographical variation microbiota. In lab,...
Cladocerans are biological indicators of environmental changes. Their remains provide information on past changes in lake environments. We studied the correspondence between contemporary Cladocera assemblages and their subfossil from an oxbow lake. sought to demonstrate that there were differences among various sites with different utilization based physical–chemical variables. The lake’s two sides used as fishing sites, where angling is main activity. middle site under nature protection...
The body size of aquatic invertebrates is, to a great extent, dependent on ambient temperature, but distributions are also determined by other factors like food supply and predation. effect temperature organisms is formulated in the temperature–size hypothesis, which predicts smaller with increasing temperature. In this study, subfossil remains three littoral Cladocera (Alona affnis, A. quadrangularis, Chydorus cf. sphaericus) was investigated. Exoskeletal these species can be found large...
Taxonomic, functional and phylogenetic diversity: how subfossil cladocerans mirror contemporary community for ecosystem functioning: a comparative study in two oxbowsBiases of taxa diversity traits source (active) cladoceran communities with approach were studied oxbows the River Tisza, Hungary.Subfossil found to have suffered species loss due both degree heterogeneity lake taphonomical processes.The remains heavily chitinized are those most commonly sediment, therefore bias reconstructed on...
<p>Oxbow lakes are important components of the floodplain systems lowland rivers. During flood events, oxbows connected with main river channel, and behave as lotic systems, while during inter-flood periods, these can be considered lentic ecosystems. Rivers generally poor in planktonic organisms their sediments contain scarce biological remains comparison to water However, due alternating running standing regime, sedimentary oxbow used proxies for tracking changes past hydrological...
Plant seeds are highly sensitive to environmental stress.The aim of our paper was assess the effects high nutrient levels in water and sediment thermal ponds rivers on ecosystem, based seed germination root elongation S. alba Lëngaricës Valley, Albania.Significant differences were found physicochemical parameters among samples taken from river, ponds, control ponds.We significant ponds.Significantly longer roots than river.Among sediment, Cu, K, Li stimulants for elongation.With Li, Ba, Mg,...
Studies on the sediments of lakes with varying trophic status are particular importance when considering changes in natural environment. In this study, our objective was to examine subfossil remains Cladocera species and relationship between sedimental assemblages geochemical variables during 11 years sediment records from northern Hungarian lakes. To achieve this, we compared cladoceran communities geochemistry layers among Among studied lakes, one an intermittent lake (KMT: Kis-Morotva...
Abstract The objective to study the influence of microbiome on host fitness is frequently constrained by spatial and temporal variability microbial communities. In particular, environment serves as a dynamic reservoir microbes that provides potential colonizers for animal microbiomes. this study, we analyzed Hydra oligactis corresponding water samples from 15 Hungarian lakes reveal contribution environmental microbiota microbiome. Correlation analyses neutral modeling revealed differences in...
Abstract This paper presents the results of floristical examinations performed in units a former secondary sedimentation pond system Hungary. The outcome analyses on chromium content plants is discussed. Beside chemical analyses, observations plants, characterization ecological state plant stands adapted to heavy metal load. Results elemental analysis for metals revealed that none constituting natural vegetation can be treated as hyperaccumulator plant. A green cover and detoxification...
We assessed the usefulness of Cladocera remains for establishing ecological status oxbows and also tested association species with various vegetation types. were collected from surface sediment four habitat types (tangled vegetation, open water, reeds tunnels) 15 physical chemical parameters water studied. In samples, we identified 32 taxa. There was a significant difference in number amongst as per ANOVA. The benthic plant associated communities reeds, tangled tunnels clearly separated each...
The knowledge of the periphytic structure is important for fact that composition epiphytic periphyton indicates ecologically different habitats, biological state water-quality and its changes. Plants like reed, great bulrush, saligot, pondweed, water-rose separately were collected from sampling sites examination. We performed comparability monitoring systems based on category (mass), group (ash%), type (chl-a%), character (AI), we used indicators to determine ecological state. Taking into...
Világszerte egyre inkább növekednek az aszályos időszakok, jelentősen csökkentek állóvizeink vízszintjei. Paleolimnológiai vizsgálatok esetében állóvizek üledékének tanulmányozása folyik, melynek segítségével a múltban lejátszódott folyamatok, illetve környezeti hatások elemzésére adódik lehetőség. kutatások során, amikor üledékben megőrződött szervezetek maradványait, beleértve Cladocera maradványokat vizsgáljuk, meder legmélyebb részéről szoktunk üledék mintát venni, mert pontra sodródnak...