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The disappearance of the European eel from the western Wadden Sea


, : The disappearance of the European eel from the western Wadden Sea. Journal of Sea Research 66(4): 0-439

A cohort model for the European eel is presented, which enables the interpretation of observed catches of yellow eel and silver eel in the western Wadden Sea in terms of recruitment data of glasseel. The model builds on various assumptions on length-dependent mortality and silvering rates and on the standard Dynamic Energy Budget (DEB) model which predicts length growth. DEB parameter values are estimated on the basis of literature data. The model predictions are generally in good agreement with the data, though the final decline in numbers in the 198s occurs earlier than predicted. This suggests that the decrease in eel stock is not just a consequence of lower glasseel immigration but that local conditions must have impoverished, a phenomenon earlier observed in fresh water.A 5-years dataset of eel catches in marine waters is presented. Catches are linked to observed recruitment data by means of a fisheries model. This individual-based population model is founded on Dynamic Energy Budget theory. Lower recruitment is mainly responsible for the observed decrease in catches..

US$19.90

DOI: 10.1016/j.seares.2011.08.007


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Morone, F.; Roth, K.; Min, B.; Stanley, H.Eugene.; Makse, Hán.A., 2017: Model of brain activation predicts the neural collective influence map of the brain. Efficient complex systems have a modular structure, but modularity does not guarantee robustness, because efficiency also requires an ingenious interplay of the interacting modular components. The human brain is the elemental paradigm of an effici...

Dexter, Lewis, 1952: Certain physiologic factors involved in the production of right ventricular hypertrophy. Fed Proc: 74

Poczopko, P., 1969: Self-defense against hyperthermia in animals. Acta Physiologica Polonica 20(6): 893-905

Irwin, C., 1980: Lightweighting dairy containers. Mean performance goals suggested for a lightweight dairy container are: a top load of 15 lb (a measure of the container's ability to open the valve of the filler); finish strip torque of 20 in-lb (a measure of ability to resist forces applied...

Joens Heinz Peter, 1995: A fossil linear zone of weakness beneath the Kasei Valles, Mars?. Abstracts of Papers Submitted to the Lunar and Planetary Science Conference: art 2; Pages 701-702. 1995.

Raeihle, D., 1967: Giant Haminoea solitaria Say. New York Shell Club Notes, 137: 7

Hofstad T., 1981: The genus fusobacterium. Starr, M P Et Al (Ed ) The Prokaryotes: A Handbook on Habitats, Isolation And Identification Of Bacteria, Vols 1 And 2 Xxvii+1258p(Vol 1); Xxi+1335p(Vol 2) Springer-Verlag: Berlin, West Germany: New York, N Y , Usa Illus P1464-1474

Mezencev, J.; Lazar, J.; Kovalcik, T.; Jencik, F., 1974: Use of some biologically active substances in broiler feeds. 4. Ascorbic acid in organs of chickens given synthetic amino acids. 4. Groups of chickens 5 weeks old were given a standard feed alone or with 0.5% glutamic acid or the glutamic acid and 0.5% lysine. Those given glutamic acid without lysine had significantly more ascorbic acid in heart muscle than the other groups...

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