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001-es BibID:	BIBFORM102672
035-os BibID:	(WoS)000833329100001 (Scopus)85134040601
Első szerző:	Tumurtogoo, Uyanga (PhD student)
Cím:	Density and Diversity Differences of Contemporary and Subfossil Cladocera Assemblages: A Case Study in an Oxbow Lake / Uyanga Tumurtogoo, Aida Figler, János Korponai, Zsófi Sajtos, István Grigorszky, Csaba Berta, István Gyulai
Dátum:	2022
ISSN:	2073-4441
Megjegyzések:	Cladocerans are biological indicators of environmental changes. Their remains provide information on past changes in lake environments. We studied the correspondence between con- temporary Cladocera assemblages and their subfossil remains from an oxbow lake. We sought to demonstrate that there were differences among the various sites of an oxbow lake with different utilization based on contemporary and subfossil Cladocera assemblages and physical?chemical variables. The oxbow lake's two sides are used as fishing sites, where angling is the main activity. The middle site of the lake is under nature protection with high macrovegetation coverage. Contemporary and subfossil Cladocera assemblages were sampled from 21 sampling sites along the oxbow lake. Our research showed that the subfossil Cladocera assemblages had higher species richness and densi- ties (36 taxa) than the contemporary species (29 taxa). We found one species of the Polyphemidae family only in the contemporary assemblage. Among the sites, Cladocera assemblages differed in their species composition and density. The highest densities were found in the second fishing site due to the appearance of the small-sized Bosmids. The relationship between Cladocerans and the physical?chemical variables showed that some variables, such as chlorophyll-a, biological oxygen demand, dissolved oxygen, copper, phosphide, and organic matter content, significantly affected Cladocera composition. We found that the subfossil Cladocera assemblage was significantly more diverse and abundant than the contemporary one, indicating that an integrated sampling may be sufficient to provide better results on the total species composition of the water body.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk physical-chemical variables contemporary subfossil Cladocera fishing and natural site
Megjelenés:	Water. - 14 : 14 (2022), p. 1-14. -
További szerzők:	Figler Aida (1993-) (okleveles hidrobiológus) Korponai János (1964-) (biológus) Sajtos Zsófi (1994-) (kémikus, okleveles analitikus vegyész) Grigorszky István (1967-) (biológus-ökológus) Berta Csaba (1991-) (hidrobiológus) Gyulai István (1980-) (biológus)
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001-es BibID:	BIBFORM133649
035-os BibID:	(WoS)001581184500001 (Scopus)105017434054
Első szerző:	Wamugi, Sheila Mumbi A.
Cím:	Exploring Cladocera Assemblage and Responses to Land Use Patterns / Sheila Mumbi A. Wamugi, István Gyulai, Jázmin Jakab, Umar Abba Kawu, Andor G. Soltész, Andrea Böjthe, Zsófi Sajtos, Géza Selmeczy, Janos Korponai
Dátum:	2025
ISSN:	1424-2818
Megjegyzések:	Cladocera communities in surface sediments from 31 lakes in Hungary were analysed to assess the impacts of land use on the aquatic systems. We evaluated the alpha and beta diversity metrics, with land use classification types based on the Corine Land Cover. Physical and water chemistry parameters were analysed using standardised procedures. Using redundancy analysis (RDA), total phosphorus (TP) was identified as the key driver of Cladocera composition and distribution. End-member mixing analysis (EMMA) revealed distinctive ecological patterns in Cladocera assemblages across land use types. Our results demonstrate that agriculture and urbanisation contribute to the associated degradation of the lakes and changes in trophic states. Wetlands, forests, and open waters play a critical role as buffer zones in mitigating anthropogenic effects, with Cladocera community composition mirroring the nutrient conditions of the lakes.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Cladocera assemblage land use environmental variables end-member analysis
Megjelenés:	Diversity. - 17 : 9 (2025), p. 642-665. -
További szerzők:	Gyulai István (1980-) (biológus) Jakab Jázmin Kawu, Umar Abba Soltész Andor Gergő Böjthe Andrea Clara Sajtos Zsófi (1994-) (kémikus, okleveles analitikus vegyész) Selmeczy Géza Korponai János (1964-) (biológus)
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