Fish Population Dynamic and Stock Assessment

3.2.4.3. Chapman’s method

The input data needed are L(t) and $$L(t + \triangle t) - L(t)$$

Note : The methods Chapman’s and Gulland is based on a constant time interval $$\triangle t$$ if pairs of observation the methods could be used. (Ford & Walford plot & Chapman’s method is given as an problem in practical section).