Effects of Different Fishery Management Schemes on Bycatch, Joint Catch, andDiscards. Summary of a National Workshop. Held in San Francisco, California on January 29-31, 1990

摘要

In all fisheries, some fish, shellfish, or other organisms are discarded at sea.Fishery management regulations and market conditions are primary influences. Discards include those fish and shellfish which have lower or no market value, are damaged during harvest, or cannot be legally sold. Other organisms such as marine mammals, birds, and turtles are accidentally caught and discarded in some fisheries. Fishery management has intensified and undergone many changes worldwide in the last ten years. Methods used include restrictions of the catch quantity, fish size, and sex. Limited entry, trip limits (frequency and landing limits), gear restrictions, area closures, and seasons further restrict the fishing industry. Great interest has been shown recently in privatizing harvest rights for fish and shellfish through individual transferable quotas. The first two days of the workshop consisted of panel presentations and discussions focused on likely bycatch and discard problem consequences under six primary management schemes.