Genauigkeit von Alterslesungen, ihre Standardisierung und Kalibrierung

Gröger, Joachim (2000) Genauigkeit von Alterslesungen, ihre Standardisierung und Kalibrierung. Informationen für die Fischwirtschaft aus der Fischereiforschung, 47(2), pp. 84-90.

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Official URL: http://aquacomm.fcla.edu/3252

Abstract

Age reading by use of otoliths is one of the basic but also most essential elements in practical fish population dynamics. Unfortunately, many factors can influence the readings of a single reader. Erronous readings, however, have a consequential effect on the evaluation and prediction of the development of the fish stock under consideration. In order to master this problem and to reduce out the effect of those factors, it seems neccessary to standardize the whole process of age reading between collaborating readers. From a statistical point of view calibration techniques can be used to identify those factors and to correct the readings with respect to them. The current article presents an overview over the basic idea behind this, over how to balance out the existing deviations and how to correct the age readings.

Item Type: Article
Title: Genauigkeit von Alterslesungen, ihre Standardisierung und Kalibrierung
Personal Creator/Author:
CreatorsEmail
Gröger, Joachimjoachim.groeger@vti.bund.de
Refereed: No
Journal or Publication Title: Informationen für die Fischwirtschaft aus der Fischereiforschung
Volume: 47
Number: 2
Page Range: pp. 84-90
Date: 2000
ISSN: 1437-5842
Contact Email Address: joachim.groeger@vti.bund.de
Issuing Agency: Bundesforschungsanstalt für Fischerei
Additional Information: Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010.
Uncontrolled Keywords: modelling; otoliths; methods
Subjects: Education
Fisheries
Item ID: 3252
Depositing User: Horst Bahl
Date Deposited: 07 May 2010 17:10
Last Modified: 10 Nov 2012 14:37
URI: http://aquaticcommons.org/id/eprint/3252

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