Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 334343
Title Effects of commercial fishery on the bream population and the expansion of Chara aspera in Lake Veluwe
Author(s) Lammens, E.H.R.R.; Meijer, M.L.; Nes, E.H. van; Berg, M.S. van den
Source Ecological Modelling 177 (2004)3-4. - ISSN 0304-3800 - p. 233 - 244.
DOI https://doi.org/10.1016/j.ecolmodel.2003.10.002
Department(s) Aquatic Ecology and Water Quality Management
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2004
Keyword(s) visserij - abramis brama - eutrofiëring - charophyta - populatiedynamica - meren - aquatische ecosystemen - flevoland - fisheries - abramis brama - eutrophication - charophyta - population dynamics - lakes - aquatic ecosystems - flevoland - individual-based model - mussel dreissena-polymorpha - shallow eutrophic lake - water-quality - growth-rate - temperature - dynamics - size - communities - vegetation
Categories Water Quality / Aquatic Ecology
Abstract The fish community in the shallow Lake Veluwe (3400 ha) has recently changed in composition. The total biomass of fish decreased to ca. 35% of the original biomass. The change in fish biomass followed the introduction of a commercial fishery and was in its turn followed by a rapid expansion of macrophyte beds dominated by Chara aspera Deth. ex Willd. An individual-based fish model was used to evaluate the causation of these events. We estimated natural mortality of the bream population (Abramis brama L.) using data on growth, recruitment and size distribution. The model predicted that without the fishery the biomass of the bream population would hardly change and that the fishery could explain the change in the biomass and size composition
The fish community in the shallow Lake Veluwe (3400 ha) has recently changed in composition. The total biomass of fish decreased to ca. 35% of the original biomass. The change in fish biomass followed the introduction of a commercial fishery and was in its turn followed by a rapid expansion of macrophyte beds dominated by Chara aspera Deth. ex Willd. An individual-based fish model was used to evaluate the causation of these events. We estimated natural mortality of the bream population (Abramis brama L.) using data on growth, recruitment and size distribution. The model predicted that without the fishery the biomass of the bream population would hardly change and that the fishery could explain the change in the biomass and size composition. The rapid expansion of C. aspera was unlikely without the fishery, as Chara needs transparency down to the bottom and undisturbed sediment. The reduction of the bream population created favourable conditions for zebra mussels Dreissena polymorpha (Pallas) to settle which in turn created the clear water, necessary for the development of the Chara beds. (C) 2003 Published by Elsevier B.V.
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