Research Document - 2001/071
Smoothing Length Frequency Data via Kernel Density Estimation
By Healey, B.P., Cadigan, N.G.
Abstract
We use kernel smoothing to estimate the weekly length frequency of the commercial landings in NAFO Divisions 3Ps and 3KL. This is done for each gear type used in the fishery. The estimates are based on irregular length frequency sampling conducted by commercial fishers and sentinel participants. The goal of the smoothing is to predict weekly proportions-at-length in 1998-2000, for selected gear types and regions that have reported landings. This information is required in the analysis of tag recapture data (see Cadigan and Brattey, 2000).
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