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That could be because fish are moving into other areas or learn to avoid the nets. Fishing yields can't be the only source of data.
by sametmax 9y ago
That could be because fish are moving into other areas or learn to avoid the nets. Fishing yields can't be the only source of data.
- Cacti 9y agoHow do you think they do the surveys in the first place? ;) They use nets.
- nate_meurer 9y agoModern factory fishing fleets use sonar and track movements of fish populations over vast areas. It's highly unlikely fish have learned to evade sonar, or nets.