Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Implications for current management advice for North Sea plaice: Part I. Migration between the North Sea and English Channel
Kell, L.T.; Scott, R.; Hunter, E. (2004). Implications for current management advice for North Sea plaice: Part I. Migration between the North Sea and English Channel. J. Sea Res. 51(3-4): 287-299. https://dx.doi.org/10.1016/j.seares.2003.10.004
In: Journal of Sea Research. Elsevier/Netherlands Institute for Sea Research: Amsterdam; Den Burg. ISSN 1385-1101; e-ISSN 1873-1414, meer
Ook verschenen in:Geffen, A.J.; Nash, R.D.M.; van der Veer, H.W. (Ed.) (2004). Proceedings of the Fifth International Symposium on Flatfish Ecology, Part II. Port Erin, Isle of Man, 3-7 November 2002. Journal of Sea Research, 51(3-4). Elsevier: Amsterdam. 167-338 pp., meer
|  |
| Trefwoorden |
Behaviour > Migrations
Management > Resource management > Fishery management
Simulation
Stocks
Pleuronectes platessa Linnaeus, 1758 [WoRMS]
ANE, Kanaal [Marine Regions]; ANE, Noordzee [Marine Regions]
Marien/Kust |
| Author keywords |
North Sea plaice; stock mixing; evaluation; simulation; management |
| Auteurs | | Top |
- Kell, L.T.
- Scott, R.
- Hunter, E.
|
|
|
| Abstract |
Twentieth century mark-recapture studies of conventionally tagged plaice suggested that the maximum exchange rate of fish between the North Sea and the eastern English Channel did not exceed 10%. However, recent studies with electronic data storage tags have suggested that this figure may be significantly greater. In spite of this, current stock assessment and management advice is predicated upon the assumption that the eastern English Channel and North Sea contain two distinct stocks, with no mixing between them. Previous studies on other stocks have shown that different mixing rates can yield grossly different predictions of abundance trends. Using a simulation framework based on the current management regime and simple assumptions regarding the mixing scenario, the consequences of ignoring migratory behaviour between independently managed stocks was investigated. Results indicate that the effects of stock mixing can generate considerable bias in the perceived state of a stock relative to its true state and that changes in the management applied to one stock may cause changes in the level of bias for neighbouring stocks. However, it is concluded that improved management will not necessarily be achieved by developing increasingly complex spatial and temporal assessment methods but rather by developing simple but robust management strategies that have been evaluated before implementation against plausible hypotheses about the dynamics of the stocks and fisheries to be managed. Evaluation should be undertaken using a simulation framework that allows a range of plausible hypotheses about stock and fishery dynamics to be included |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
