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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
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
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
Internet cím:DOI
Intézményi repozitóriumban (DEA) tárolt változat


001-es BibID:BIBFORM057753
Első szerző:Tóth Bence (biomérnök)
Cím:Estimation of suspended loads in the Danube River at Göd (1668 river km), Hungary / Tóth Bence, Bódis Erika
Megjegyzések:Sediment rating curves were used to estimate suspended particulate matter (SPM) loads in the Danube River at Göd (1668 river km), Hungary, in conjunction with a sampling program conducted between 2003 and 2012. Contrary to its water quality significance, only a few studies have focused on the annual transport of SPM in this section of the river. Based on the results, we can state that (1) the SRC method (in certain cases with correction factors) provided reliable estimates of the annual SPM loads in this section of the river; (2) the division of the dataset into seasonal or temperature subsets did not significantly improve the estimations, moreover, annual datasets may provide additional hydrologic information on the water year or the annual water regime; (3) large amounts of the SPM were transported during short, but high water discharge periods, hence, calendar based-sampling should be supplemented with event-based sampling, and (4) the SPM load of the river has declined by about 50% over previous decades, which is most likely due to the installation of hydropower plants on the upper (German, Austrian, Slovakian) stretches of the Danube River.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
Suspended particulate matter
Sediment rating curve
Danube River
Annual suspended particulate matter loads
Megjelenés:Journal Of Hydrology. - 523 (2015), p. 139-146. -
További szerzők:Bódis Erika (biológus)
Internet cím:Szerző által megadott URL
Intézményi repozitóriumban (DEA) tárolt változat
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