the vector of length data. Each row represents one record per individual fish.
K
the growth coefficient from a von Bertalanffy growth model.
Linf
the L-infinity coefficient from a von Bertalanffy growth model.
Lc
the length at first capture.
nboot
the number of bootstrap runs. Default=100.
Value
Details
The standard Beverton-Holt equilibrium estimator of instantaneous total mortality (Z)
from length data (page 365 in Quinn and Deriso (1999)) is calculated. The mean length
for lengths >=Lc is calculated automatically. Missing data are removed prior to calculation.
Estimates of standard error are made by bootstrapping length data >=Lc using package boot.
References
Quinn, T. J. and R. B. Deriso. 1999. Quantitative Fish Dynamics. Oxford University Press, New York, New York. 542 pages