Journal ArticleDOI
Effects of vessel-induced waves on the YOY-fish assemblage at two different habitat types in the main stem of a large river (Danube, Austria)
Elisabeth Schludermann,Marcel Liedermann,H. Hoyer,Michael Tritthart,Helmut Habersack,Hubert Keckeis +5 more
TLDR
In this article, the effects of navigation on young-of-the-year (YOY) fish were investigated for the Danube River based on an integrative approach, and the characteristics of vessel-induced waves were correlated to YOY-drift.Abstract:
The effects of navigation on young-of-the-year (YOY) fish were investigated for the Danube River based on an integrative approach. During YOY growing season, wave height, wave frequency and water currents were recorded. Synchronously, fish drift and fish abundance of YOY were monitored in two distinct inshore nursery habitats—a gravel bar and a groyne field. The characteristics of vessel-induced waves were correlated to YOY-drift. In both habitats, an increase in drift densities during ship passages was observed. At the same time, assemblage composition and drift densities differed between habitat types. At the gravel bar, drift densities of larval cyprinids—representing many keystone species of the Danube—were higher during ship passages. In the groyne field, drift was low and percids dominated the YOY-assemblage along the shore. Banks with gentle slopes in the main channel seem to be particularly affected by vessel-induced wave wash. Precisely such habitats are often established within the scope of modern river restoration projects because they provide suitable nursery habitats for riverine fish species. Beside the positive effects on biota, the establishment of these habitats in navigable reaches may create problems for YOY-fish due to displacement effects induced by ship-generated waves.read more
Citations
More filters
Journal ArticleDOI
Patterns and processes in the drift of early developmental stages of fish in rivers: a review
TL;DR: This manuscript reviews the literature on the dispersal of young fishes in running waters and argues that, aside from eggs, the early stages of fish are not exclusively either passive or active drifters, but usually a mixture of the two, which is term ‘actipassive’ drift.
Journal ArticleDOI
Effects of ship-induced waves on aquatic ecosystems.
TL;DR: A review on the effects of ship-induced waves on the structure, function and services of aquatic ecosystems based on more than 200 peer reviewed publications and technical reports to help develop scientifically based and target-oriented management plans for navigational waters that optimize abiotic and biotic integrity and their ecosystem services and uses.
Journal ArticleDOI
The underestimated dynamics and impacts of water-based recreational activities on freshwater ecosystems
Markus Venohr,Simone D. Langhans,Simone D. Langhans,Oliver Peters,Franz Hölker,Robert Arlinghaus,Robert Arlinghaus,Lewis Mitchell,Christian Wolter +8 more
TL;DR: In this paper, the authors discuss how recreational activities on, in, and along freshwaters (e.g., boating, bathing, angling) positively contribute to human well-being but can also concurrently stress aquatic ecosystems.
Journal ArticleDOI
Longitudinal training dams mitigate effects of shipping on environmental conditions and fish density in the littoral zones of the river Rhine.
Frank Collas,A.D. Buijse,L.P.W.J. van den Heuvel,N. van Kessel,M.M. Schoor,H. Eerden,Rob S. E. W. Leuven +6 more
TL;DR: Results of the field sampling clearly indicate successful ecological rehabilitation of littoral zones that coincides with a facilitation of navigation in the main river channel and increased flood safety.
References
More filters
Journal ArticleDOI
Quantifying threats to imperiled species in the united states
TL;DR: Surprisingly, there have been surprisingly few analyses of the extent to which each of these factors-much less the more specific deeds encomDavid S. Wilcove is a senior ecologist at the Environmental Defense Fund and David Rothstein re ceived his J.D. in 1997 from Northeastern
Journal ArticleDOI
Assessment of Biotic Integrity Using Fish Communities
TL;DR: In this paper, a series of fish community attributes related to species composition and ecological structure were used to evaluate the quality of an aquatic biota. In preliminary trials this system accurately reflected the status of fish communities and the environment supporting them.
Book
Impounded Rivers: Perspectives for Ecological Management
TL;DR: In this paper, a comprehensive geographic analysis of the impact of dams and their associated reservoirs on rivers is presented, focusing on the river system downstream from the dam, including its floodplain, estuary or delta, and the near-shore coastal zone.
Journal ArticleDOI
The ontogeny of piscivory and its ecological consequences
TL;DR: Focusing on interspecific variation, it was found that species that were born larger and had larger mouth gapes became piscivorous at younger ages and at smaller sizes, and maximum and mean prey size eaten increased with predator size in all species.
Related Papers (5)
Navigation impacts on freshwater fish assemblages: the ecological relevance of swimming performance
Global biodiversity scenarios for the year 2100.
Osvaldo E. Sala,F. S. Chapin,Juan J. Armesto,Eric L. Berlow,Janine Bloomfield,Rodolfo Dirzo,E Huber-Sanwald,Laura Foster Huenneke,Robert B. Jackson,Ann P. Kinzig,Rik Leemans,David M. Lodge,Harold A. Mooney,Martín Oesterheld,N L Poff,Martin T. Sykes,Brian Walker,Marilyn D. Walker,Diana H. Wall +18 more