A Note on the History of Mark-Recapture Population Estimates

Dahl writes thus: 'The main difficulty which had to be solved was to obtain a satisfactory estimate as to the number of trout present in these tarns. Starting from the idea which originally prompted Dr C. G. Johs. Petersen in his famous experiment with the plaice of the Limfjord in Jutland, I endeavoured to employ the marking of fish as a means of estimating the stock. Accordingly I constructed a seine-net, about 25 fathoms in length and 4...