the principal conservation measures are enshrined in the wild salmon and sea trout tagging scheme regulations which are revised on an annual basis and provide for the introduction of salmon conservation measures since the harvest of salmon by commercial and recreational angling means has been restricted to those stocks of rivers that are meeting their conservation limits a fund of eur million was allocated for the purpose and former licence holders received payments aligned with the previous catch history on the basis that they undertook not to engage in the fishery in future