REPORT OF THE STANDING COMMITTEE ON RESEARCH ... - Iccat

ICCAT REPORT 2008-2009 (I)Sub-Committee on Ecosystems 20082181. Species and stocks covered under the data review and preparation work.By-catch in general and seabirds in particular.2. Please identify a recent data workshop or data preparation task for an assessment evaluation. (location,work time schedule, number of scientific participants)Madrid, 10-14 2008 -163. Please detail the task performed during the data workshop with regard to catch and effort dataThe longline fishing effort database (EFFDIS, analog to CATDIS but for effort) created in the previousmeeting was revised and corrected.Update and verification of landings, dead discards by? Flag, fishery, area, quarter, semester, etc.a. Update and verification of fishing effortb. Update and verification of gear/fleets distribution of catches.c. Revision of historical gaps or update of historical seriesd. Others (describe).4. Other tasks done during the workshopSome by-catch rates by flag, with some spatial and temporal detail were presented by several countries andwere revised in the group.a. CPUE series updateb. Size, age conversions of catch datac. Review and update of biological information.d. Others (describe).5. What were the main problems/difficulties associated with the catch and effort data. Please provide abrief summary if applicable.Essentially, there is not enough by-catch data to allow estimate total removals.To create the longline fishing effort database, a substitution scheme was necessary given that the T2CEdatabase was incomplete.a. Incomplete seriesb. Lack of information from main flags/fleets for recent yearsc. Under-reportingd. Others.6. What other limitations of data were identified. Please provide a brief summary and their consequences.a. No size data available for important flags/fleetsb. No area/ time of year of capture informationc. Others7. What were the conclusions/recommendations from the scientific group with regards to the dataavailable and likely assessment analysis to be performed?For seabird by-catch rates and longline fishing effort, important substitutions are needed, given the lack ofdata.