Test of the representativity of volunteer recreational catch diaries as i) between recreational diarists and a random sample of recreational fishers and ii) between recreational diarists and commercial fishers.

CPUE is lobsters trap−1 day−1.
Mean year born (YB), years of lobster fishing experience (FY), fishing days (FD) and time between each trap haul (TH), incl. mean S.E. for the test sample and recruited diary reporters. The first week of the season (Aust-Agder, eastern part of the survey area) and for mean of season (whole study area) for diary and a random selection of fishers registered in field. If the interval for the difference contains zero, it is no significant difference [32].