Share This Author
Comparative feeding ecology of invasive Ponto-Caspian gobies
- J. Brandner, K. Auerswald, A. Cerwenka, U. Schliewen, J. Geist
- Environmental ScienceHydrobiologia
- 1 February 2013
Trophic niches in both species expanded during the growth period with increasing intraguild predation and cannibalism in P. kessleri and increasing molluscivory in N. melanostomus.
Bigger Is Better: Characteristics of Round Gobies Forming an Invasion Front in the Danube River
The pronounced changes in fish and invertebrate communities with a dominance of alien species suggest invasional meltdown and a shift of the upper Danube River towards a novel ecosystem with species that have greater resistance to goby predation.
A systematic approach to evaluate the influence of environmental conditions on eDNA detection success in aquatic ecosystems
- B. Stoeckle, S. Beggel, A. Cerwenka, Elena Motivans, R. Kuehn, J. Geist
- Environmental SciencePloS one
- 8 December 2017
The results of this study highlight that a successful application of eDNA methods in field surveys strongly depends on site-specific conditions, such as water flow conditions, sediment composition, and suspended particles, which should be carefully considered when sampling, analyzing, and interpreting eDNA detection results.
Effects of sampling techniques on population assessment of invasive round goby Neogobius melanostomus.
- J. Brandner, J. Pander, M. Mueller, A. Cerwenka, J. Geist
- Environmental ScienceJournal of fish biology
- 1 June 2013
The results of this study suggest that a higher degree of standardization and inter-calibration is useful to achieve better comparability of population data of invasive N. melanostomus and other benthic fish species.
Strong versus weak population genetic differentiation after a recent invasion of gobiid fishes (Neogobius melanostomus and Ponticola kessleri) in the upper Danube
Population genomic amplified length polymorphism (AFLP) data show that the genome of the more recent newcomer, i.e. the globally invasive N. melanostomus, is significantly differentiated to a comparatively large degree and exhibits pronounced small-scale population structure along a recently invaded 200 km river section.
Shell morphological versus genetic identification of quagga mussel (Dreissena bugensis) and zebra mussel (Dreissena polymorpha).
The results of this study suggest that species records of dreissenid mussels should generally be genetically verified.
Revisiting the lacquer peels method with pyroclastic deposits: sediment plates, a precise, fine scale imaging method and powerful outreach tool
- G. Douillet, U. Kueppers, B. Bernard
- Environmental ScienceJournal of Applied Volcanology
- 8 October 2018
Pyroclastic sedimentary successions record an eruptive history modulated by transport and depositional phases. Here, a field technique of outcrop impregnation was used to document pyroclastic…
Synergistic impacts by an invasive amphipod and an invasive fish explain native gammarid extinction
Evidence is provided for synergistic effects of the two invasive Ponto-Caspian species on the native amphipod as an underlying process of species displacements during invasion processes and selective predation by this fish on native gammarids.
Invasion strategies in round goby (Neogobius melanostomus): Is bigger really better?
The results of this study provide support for the previously postulated ´bigger is better´ and ´individual trait utility´ hypotheses explaining invasion success in round goby.
Phenotypic differentiation of Ponto-Caspian gobies during a contemporary invasion of the upper Danube River
- A. Cerwenka, P. Alibert, J. Brandner, J. Geist, U. Schliewen
- Environmental Science, BiologyHydrobiologia
Patterns of body shape similarity among upper Danubian goby populations suggest a stepping-stone rather than a continuous expansion model for both species, where multiple introductions, possibly from various origins, may have shaped differentiation.