I needed to know the number of length classes to be made to generate an LFQ file.
At times when the number of classes goes beyond 15, total mortality comes out to be lesser than natural mortality and exploitation is also negative. Is that fine or wrong?
Besides when making calculations in biomass or recruit per yield, Emax and Eecon come out to be 1. is that fine or doubtful.
I have located a web link to a research article that suggests an ideal bin size for ELEFAN analysis in stock assessment studies.
The link to the article is available at:
https://www.sciencedirect.com/science/article/abs/pii/S0165783619303297
Published in the journal Fisheries Research in 2020, the article outlines a comprehensive methodology for identifying the most suitable bin size for ELEFAN analysis, which is a prevalent method for assessing size-frequency data in FiSAT II and TropFishR. The recommended methods improve the accuracy of VBGF parameter estimation such as Linf and K. It will help to understand the growth characteristics and reduce the uncertainty for data-limited stock assessment methods.
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