|
Eintrag |
Verweise |
|
Autor |
Mohn, R. |
|
|
Titel |
Length-Based Virtual Population Analysis; A Review and Swordfish Example |
Typ |
Zeitschrift, Artikel |
|
Jahr |
1991 |
Publikation |
ICCAT Working Document |
Kurztitel der Zeitschrift |
|
|
|
Band |
|
Ausgabe |
|
Seiten |
|
|
|
Schlüsselwörter |
Fischerei, population, cpue, lÄngenfrequenz, wachstum, modell, statistik |
|
|
Zusammenfassung |
Length-based population analyses have had a fairly long but not too successful history. These methods are required over a range of situations from when aging is impossible to when it is difficult or prohibitively expensive. There have been 3 sorts of approaches: 1) modal analysis to convert length frequencies to ages 2) age-length key enhancement and 3) imbedded growth models. The last group is what is generally known as length-based methods and the focus of this review. At the 1991 ICES Methods Working Group, 5 techniques were compared and these results are summarized. Two of these techniques, cohort slicing and length-based ADAPT, are applied to swordfish (Xiphias gladius ) data. The imbedded growth model for the former technique is the mean size at age while the latter uses the distribution of size at age. A new method is also presented which begins with cohort slicing then estimates numbers at age and enhances an inferred age-length key at each step of an iterative process. |
|
|
Adresse |
|
|
|
Organisation |
|
Abschlussarbeit |
|
|
|
Herausgeber |
|
Erscheinungsort |
|
Editor |
|
|
|
Sprache |
|
Sprache der Zusammenfassung |
|
Originaltitel |
|
|
|
Editor der Reihe |
|
Titel der Reihe |
|
Kurztitel der Reihe |
|
|
|
Band der Reihe |
|
Ausgabe der Reihe |
|
Edition |
|
|
|
ISSN |
|
ISBN |
|
Medium |
|
|
|
Bereich |
|
Expedition |
|
Konferenz |
|
|
|
Notizen |
|
Geprüft |
nein |
|
|
Rufnummer |
414 |
Signatur |
2218 |
|
Permalink für diesen Eintrag |