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001-es BibID:	BIBFORM078569
035-os BibID:	(cikkazonosító)929 (Wos)000472680400059 (Scopus)85066328449
Első szerző:	Berta Csaba (hidrobiológus)
Cím:	Community Response of Cladocera to Trophic Stress by Biomanipulation in a Shallow Oxbow Lake / Csaba Berta, Béla Tóthmérész, Marta Wojewódka, Olga Augustyniuk, János Korponai, Boglárka Bertalan-Balázs, Alex Sándor Nagy, István Grigorszky, István Gyulai
Dátum:	2019
ISSN:	2073-4441
Megjegyzések:	Studying contemporary and subfossil Cladocera (Crustacea) communities, we explored the effect of top-down stressors on the cladoceran communities; we are also interested in the coherence of the contemporary and subfossil communities. The studied Cibakháza oxbow lake is in E Hungary, on the left-floodplain of the River Tisza; it is a large, long, and shallow oxbow lake. Three areas of the oxbow lake were distinguished based on the strength of top-down stress: protected area with low top-down stress, biomanipulated area with high top-down stress, and recreational area with moderate top-down stress. Altogether, we identified 28 taxa in the contemporary and subfossil communities in the oxbow lake. We found that the species number of the contemporary Cladocera communities was lower (protected area: 13; biomanipulated area: 9, and recreational area: 14) than in the subfossil communities (protected area: 20; biomanipulated area: 16, and recreational area: 14). Among the environmental variables, we observed differences between the protected and biomanipulated area, while the recreational area showed a transition. Species number, abundances, and Simpson diversity also showed the effect of the fish introduction. There were no differences in beta-diversity among the contemporary and subfossil Cladocera community. The non-metric multidimensional scaling (NMDS) ordination showed that the biomanipulated area in the case of the contemporary communities was separated from the other areas, while in the case of the subfossil communities, there was no separation according to top-down stress. Our results showed that the number of species of contemporary Cladocera communities was lower in each area (3-10; 3-9; 5-9) compared to the subfossil communities (6-17; 7-12; 8-12). However, the highest abundances were found in the biomanipulated area due to the appearance of small-sized Cladocera species. Our findings suggest that the effect of a short-time fish introduction is restorable when the oxbow lake has a protected part.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk zooplankton diversity biomanipulation nature protection anthropogenic impacts restoration
Megjelenés:	Water. - 11 : 5 (2019), p. 929-942. -
További szerzők:	Tóthmérész Béla (1960-) (ökológus) Wojewódka, Marta Augustyniuk, Olga Korponai János (1964-) (biológus) Balázs Boglárka (1985-) (geográfus) Nagy Sándor Alex (1956-) (hidrobiológus) Grigorszky István (1967-) (biológus-ökológus) Gyulai István (1980-) (biológus)
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