Assertion: bluefin tuna's number | /r/CapableOf | decrease with age
Facets:
value: due to natural and fishing mortality
type: CAUSE
Source sentences:
text: Then, taking into account that the numbers of fish in each cohort decreases with age due to natural and fishing mortality, the expected sampling per 1 cm bin size (SFL) proportions were estimated for both stocks assuming a non-selective gear.