Data from a growth study of New Zealand intertidal clams.
Growth increment data derived from a tagging experiment on Paphis donacina
P.donacina
A data frame with 150 observations on the following 4 variables.
T1a numeric vector describing the release date (y)
T2a numeric vector describing the recovery date (y)
L1a numeric vector describing the length at release (mm)
L2a numeric vector describing the length at recapture (mm)
Note that the data have been corrected for measurement bias, as described by Cranfield et al (1996).
Cranfield, H.J., Michael, K.P., and Francis, R.I.C.C. 1996. Growth rates of five species of subtidal clam on a beach in the South Island, New Zealand. Marine and Freshwater Research 47: 773–784.
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