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001-es BibID:	BIBFORM057759
Első szerző:	Bódis Erika (biológus)
Cím:	Spatial distribution of bivalves in relation to environmental conditions (middle Danube catchment, Hungary) / E. Bódis, J. Nosek, N. Oertel, B. Tóth, E. Hornung, R. Sousa
Dátum:	2011
ISSN:	1585-8553
Megjegyzések:	The spatial distribution of bivalves in relation to environmental conditions was studied along a second- and thirdorder stream ? medium-sized river (River Ipoly) ? large river (River Danube) continuum in the Hungarian Danube River system.Quantitative samples were collected four times in 2007 and a total of 1662 specimens, belonging to 22 bivalve species wereidentified. Among these species, two are endangered (Pseudanodonta complanata, Unio crassus) and five are invasive (Dreissenapolymorpha, D. rostriformis bugensis, Corbicula fluminea, C. fluminalis, Anodonta woodiana) in Hungary. The higherdensity presented by Pisidium subtruncatum, P. supinum, P. henslowanum and C. fluminea suggests that these species mayhave a key role in this ecosystem. Three different faunal groups were distinguished but no significant temporal change wasdetected. The lowest density and diversity with two species (P. casertanum and P. personatum) occurred in streams. The highestdensity and diversity was found in the River Ipoly, in the side arms of the Danube and in the main arm of the Danube with sandand silt substrate, being dominated by P. subtruncatum and P. henslowanum. Moderate density and species richness wereobserved in the main arm of the Danube with pebble and stone substrate, being dominated by C. fluminea and S. rivicola. Tenenvironmental variables were found to have significant influence on the distribution of bivalves, the strongest explanatoryfactors being substrate types, current velocity and sedimentological characteristics.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban Bivalves Invasive species River Danube River Ipoly Spatial pattern
Megjelenés:	Community Ecology. - 12 : 2 (2011), p. 210-219. -
További szerzők:	Nosek János Oertel Nándor Tóth Bence (1978-) (biomérnök) Hornung Erzsébet Sousa, Ronaldo
Pályázati támogatás:	OTKA-T/046180 OTKA
Internet cím:	DOI Intézményi repozitóriumban (DEA) tárolt változat
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