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Verweise |
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Autor |
Weisberg, Sanford |
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Titel |
Using Hard-part Increment Data to Estimate Age and Environmental Effects |
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Journal Article |
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Jahr |
1993 |
Publikation |
Can. J. Fish. Aquat. Sci. |
Kurztitel der Zeitschrift |
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Band |
50 |
Ausgabe |
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Seiten |
1229-1237 |
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Schlüsselwörter |
Fisch, Alter, Methode, Altersbestimmung, Statistik, Mathematik, Schuppe, Knochenstruktur |
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en |
Sprache der Zusammenfassung |
en, fr |
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nein |
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Rufnummer |
913 |
Signatur  |
2885 |
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Autor |
Kenchington, E. L.; Full, W. E. |
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Titel |
Fourier analysis of sea scallop (Placopecten magellanicus) shell in determining population structure |
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Zeitschrift, Artikel |
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Jahr |
1994 |
Publikation |
Can. J. Fish. Aquat. Sci. |
Kurztitel der Zeitschrift |
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Band |
51 |
Ausgabe |
2 |
Seiten |
348-356 |
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Schlüsselwörter |
population, fourier, statistik, methode, modell, wachstum, muscheln |
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Zusammenfassung |
Sea scallops (Placopecten magellanicus) were sampled from each of four scallop beds: the northeast peak of Georges Bank, Western Bank, St. Pierre Bank, and the Bay of Fundy near Digby, N.S. The outlines of scallop top shells were captured by video imagery using a semiautomated approach. Fourier shape descriptors were calculated and analyzed. Age and year-class effects were shown to be important factors influencing scallop shell shape. Allometric effects on Fourier harmonics also have a significant influence on shell shape in this species. Comparisons of Fourier harmonics between scallop beds separated by age and sampling year, and corrected for allometry, revealed significant differences in the majority of harmonic numbers. |
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Rufnummer |
472 |
Signatur |
2273 |
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Autor |
McGarvey, R. |
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Titel |
An age-structured open-access fishery model |
Typ |
Zeitschrift, Artikel |
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Jahr |
1994 |
Publikation |
Can. J. Fish. Aquat. Sci. |
Kurztitel der Zeitschrift |
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Band |
51 |
Ausgabe |
4 |
Seiten |
900-912 |
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Schlüsselwörter |
modell, statistik, population, dynamik, algorithmus |
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Zusammenfassung |
A dynamic model for open-access fisheries is presented. In addition to density dependence in recruitment and fishing effort changing in proportion to the level of profit fishermen earn which characterizes previous open-access models, it incorporates full age structure for the fish stock, lognormal environmental recruitment variability, and gear selectivity. The predator-prey cycling solution of the original Schaefer dynamic model, and subsequent open-access models, persists for these model extensions. Density dependence in recruitment induces greater global stability. Environmental recruitment variability, common in marine populations, is destabilizing in the neighborhood of the open-access equilibrium. Approximating model steady states of effort and catch by the corresponding averages from data time series underlies a new algorithm of parameter evaluation, applied here to an open-access model of the Georges Bank sea scallop (Placopecten magellanicus) fishery. |
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Geprüft |
nein |
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Rufnummer |
469 |
Signatur |
2270 |
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Autor |
Labelle, M. |
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Titel |
A likelihood method for estimating Pacific salmon escapement based on fence counts and mark-recapture data |
Typ |
Zeitschrift, Artikel |
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Jahr |
1994 |
Publikation |
Can. J. Fish. Aquat. Sci. |
Kurztitel der Zeitschrift |
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Band |
51 |
Ausgabe |
3 |
Seiten |
552-566 |
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Schlüsselwörter |
capt-recapt, methode, ML, modell, statistik, simulation |
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Zusammenfassung |
Pacific salmon (Oncorhynchus spp.) escapements in natural streams are often determined by conducting fence counts in conjunction with mark-recapture operations. Typical field conditions are characterized by protracted floods, undetected immigration, variation in sampling rates, mortality during the census periods, small sample sizes, and few successive recaptures. Closed population models tend to overestimate escapement under such conditions, and traditional open population models cannot always be relied on due to the lack of sufficient data. A likelihood-based estimation method was specifically designed for such conditions. A distinguishing feature of this model is that individual recapture histories are not required for parameter estimation. The model is also structured to incorporate ancillary data in the estimation process to improve the precision and accuracy of the estimates. The model is described in detail, and suggestions are made to facilitate its application. |
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Geprüft |
nein |
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Rufnummer |
468 |
Signatur |
2269 |
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Autor |
Caputi, N. |
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Titel |
Factors affecting the time series bias in stock-recruitment relationships and the interaction between time series and measurement error bias |
Typ |
Zeitschrift, Artikel |
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Jahr |
1988 |
Publikation |
CAN. J. FISH. AQUAT. SCI. |
Kurztitel der Zeitschrift |
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Band |
45 |
Ausgabe |
1 |
Seiten |
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Schlüsselwörter |
Fischerei, statistik, zeitreihe, methode, modell, theorie |
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Zusammenfassung |
The stock-recruitment relationship (SRR) and the recruitment to spawning stock relationship (RSR) of the tiger prawn (Penaeus esculentus ) in Exmouth Gulf, Western Australia, were used to examine the time series bias and measurement error bias by Monte Carlo simulations. Simulating the effect of measurement error as well as the random variation about the SRR and RSR helps to determine the possible combinations of measurement error and random variation which may result in the observed variation about the SRR and RSR. The simulations also indicate that there is an interaction between measurement error and random variation about the SRR/RSR on the bias of the parameters of the SRR. |
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nein |
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Rufnummer |
434 |
Signatur |
2238 |
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Autor |
Nemec, A. F. L.; Brinkhurst, R. O. |
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Titel |
Using the Bootstrap to Assess Statistical Significance in the Cluster Analysis of Species Abundance Data |
Typ |
Zeitschrift, Artikel |
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Jahr |
1988 |
Publikation |
Can. J. Fish. Aquat. Sci. |
Kurztitel der Zeitschrift |
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Band |
45 |
Ausgabe |
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Seiten |
965-970 |
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Schlüsselwörter |
Fischerei, statistik, cluster, methode, modell |
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Rufnummer |
433 |
Signatur |
2237 |
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Autor |
Thompson, K. R.; Page, F. H. |
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Titel |
Detecting Synchrony of Recruitment using Short, Autocorrelated Time Series |
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Zeitschrift, Artikel |
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Jahr |
1989 |
Publikation |
Can. J. Fish. Aquat. Sci. |
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Band |
46 |
Ausgabe |
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Seiten |
1831-1838 |
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Schlüsselwörter |
Fischerei, statistik, methode, zeitreihe |
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nein |
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Rufnummer |
432 |
Signatur |
2236 |
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Autor |
Taggart, C. T.; Leggett, W. C. |
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Titel |
Wind-Forced Hydrodynamics and Their Interaction with Larval Fish and Plankton Abundance: A Time-Series Analysis of Physical-Biological Data |
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Zeitschrift, Artikel |
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Jahr |
1987 |
Publikation |
Can. J. Fish. Aquat. Sci. |
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Band |
44 |
Ausgabe |
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Seiten |
438-451 |
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Schlüsselwörter |
Fischerei, statistik, zeitreihe, methode, modell |
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Rufnummer |
431 |
Signatur |
2235 |
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Autor |
Green, P. E. J.; Macdonald, P. D. M. |
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Titel |
Analysis of Mark-Recapture Data from Hatchery-Raised Salmon Using Log-Linear Models |
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Zeitschrift, Artikel |
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Jahr |
1987 |
Publikation |
Can. J. Fish. Aquat. Sci. |
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Band |
44 |
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Seiten |
316-326 |
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Schlüsselwörter |
Capt-recapt, fischerei, methode, statistik, modell |
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Rufnummer |
430 |
Signatur |
2234 |
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Autor |
Schnute, J. T. |
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Titel |
Statistical Analysis of Embedded Replicates in Mark-Recovery Experiments |
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Zeitschrift, Artikel |
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Jahr |
1992 |
Publikation |
Can. J. Fish. Aquat. Sci. |
Kurztitel der Zeitschrift |
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Band |
49 |
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432-442 |
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Schlüsselwörter |
Fisch, statistik, capt-recapt, methode |
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Rufnummer |
427 |
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2231 |
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