You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Two Models for Seasonal Growth in Fishes
T. J. Pitcher and P. D. M. Macdonald
Journal of Applied Ecology
Vol. 10, No. 2 (Aug., 1973), pp. 599-606
Published by: British Ecological Society
Stable URL: http://www.jstor.org/stable/2402304
Page Count: 8
You can always find the topics here!Topics: Modeling, Mathematical growth, Sine waves, Economic growth models, Population growth, Water temperature, Statistical variance, Cosine function, Sine function, Seasonal growth
Were these topics helpful?See somethings inaccurate? Let us know!
Select the topics that are inaccurate.
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
This paper describes two modifications to the von Bertalanffy model of fish growth which can account for seasonal growth in fish populations and may be of use in simulation models. Both introduce two additional parameters which can be adequately fitted by hand, although computer optimization is preferable. In the first model fish follow von Bertalanffy growth during a summer growing season but do not increase in size over the winter. In the second a similar effect is achieved by modifying the von Bertalanffy rate parameter, K, with a sine function. Both models may be linked to water temperature.
Journal of Applied Ecology © 1973 British Ecological Society