Typology of Danubian fish assemblages

Abstract

Event Abstract Back to Event Typology of Danubian fish assemblages Zoltan Szaloky1*, Vinzenz Bammer2, Agnes I. Gyorgy3, Lachezar Pehlivanov4, Michael Schabuss5, Horst Zornig5, Andras Weiperth1 and Tibor Eros6 1 Centre for Ecological Research HAS, Danube Research Institute, Hungary 2 Federal Agency for Water Management, Institute for Water Ecology, Austria 3 Research Institute of Agricultural Economics, Hungary 4 Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, Bulgaria 5 PRO FISCH OG Ecological Consultants, Austria 6 Centre for Ecological Research HAS, Balaton Limnological Institute, Hungary Environmental management needs well definable management units for the establishment of which typological approaches are often applied. However, inconsistent sampling strategies among countries can hinder large scale evaluation of aquatic assemblages for bioassessment purposes in very large transboundary rivers. We examined spatial changes in fish assemblages along the longitudinal profile of the Danube River, the second largest river in Europe, using a standardized sampling protocol, to define management units and thereby aid water management at the international level. The conventionally applied inshore electrofishing protocol was combined with sampling of offshore benthic habitats with an electrified trawl to provide a more accurate picture on fish assemblages, for the first time in any transboundary large river survey. We found that well definable assemblage classes can be set up at large spatial scales, although fish assemblages of relatively natural and impounded stretches show some separation. Contrary to the zonation concept many characteristic species could be found along the profile of the whole river, although indicator species analysis defined many character species for the typology classes. Results of the two sampling protocols complemented each other and revealed that multi gear evaluations are necessary for a better assessment of fish assemblages in very large rivers. Keywords: Large river, danube, fish typology, benthic habitat, Electrified trawl Conference: XV European Congress of Ichthyology, Porto, Portugal, 7 Sep - 11 Sep, 2015. Presentation Type: Poster Presentation Topic: Ecology, Conservation and Invasive Species Citation: Szaloky Z, Bammer V, Gyorgy AI, Pehlivanov L, Schabuss M, Zornig H, Weiperth A and Eros T (2015). Typology of Danubian fish assemblages. Front. Mar. Sci. Conference Abstract: XV European Congress of Ichthyology. doi: 10.3389/conf.FMARS.2015.03.00182 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 30 Nov 2015; Published Online: 01 Dec 2015. * Correspondence: Mr. Zoltan Szaloky, Centre for Ecological Research HAS, Danube Research Institute, Budapest, Hungary, szaloky.zoltan@okologia.mta.hu Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract Supplemental Data The Authors in Frontiers Zoltan Szaloky Vinzenz Bammer Agnes I Gyorgy Lachezar Pehlivanov Michael Schabuss Horst Zornig Andras Weiperth Tibor Eros Google Zoltan Szaloky Vinzenz Bammer Agnes I Gyorgy Lachezar Pehlivanov Michael Schabuss Horst Zornig Andras Weiperth Tibor Eros Google Scholar Zoltan Szaloky Vinzenz Bammer Agnes I Gyorgy Lachezar Pehlivanov Michael Schabuss Horst Zornig Andras Weiperth Tibor Eros PubMed Zoltan Szaloky Vinzenz Bammer Agnes I Gyorgy Lachezar Pehlivanov Michael Schabuss Horst Zornig Andras Weiperth Tibor Eros Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.