Assertion: observer | /r/CapableOf | provide biological information
Facets:
value: for stock assessment
type: PURPOSE
Source sentences:
text: In general, observers are required to collect resource data used in establishing stock distribution patterns, provide catch and effort statistics and biological information for stock assessment, examine the effects of gear types on exploited fish stocks, record associated by-catch and discard rates, collect information on fleet fishing patterns and collect detailed production data.