ELECTRONIC MONITORING ONBOARD TUNA PURSE SEINE FISHERIES: STANDARDS AND CAPABILITIES

Transcription

1 ELECTRONIC MONITORING ONBOARD TUNA PURSE SEINE FISHERIES: STANDARDS AND CAPABILITIES JON RUIZ * (jruiz@azti.es) 1

2 EM program process Pilot study Define system capabilities and potential uses Develop Minimum standards Robust and standardize data collection EM program implementation 2

3 Study Case: eeye+ SYSTEM OVERVIEW Electronic Eye Plus (EE+) based on automatic high definition photo cameras 3

4 EM capability to properly monitor activities of interest under RFMO Resolutions Item Vessel track Fishing operation date/time/position Fishing operation type ( FAD Vs FSC) Total catch by set Strength (S) Weakness (W) (S) Independent GPS, that allows tamper proof data at higher resolution than observers. Target species composition by set Human observers have the same difficulties. Species composition estimates, especially bigeye and yellowfin proportion, will be more accurate if it is done via port-sampling. 4

5 EM capability to properly monitor activities of interest under RFMO Resolutions Item Bycatch estimate and fate (sharks, rays, turtles, and marine mammals) Discards Strength (S) Weakness (W) (W) Number of cameras is limited, and bycatch handling area could change and move out from the camera views punctually. Sps. identification could be limited compared to experienced observers (S) EM allows monitoring two different places (main and well s deck) simultaneously. (W) If discards are not brailed onboard, EM is limited to estimate fish quantities in the net sack. Moreover, it would not be possible to know reasons for discarding in most of the cases. (S) If discard belt exist, EM might be a better tool for estimating discards Size frequency (W) Calibration work is still needed before robust random sampling. 5

6 EM capability to properly monitor activities of interest under RFMO Resolutions Item Collection of biological samples (e.g. gonads, otoliths, spines) Strength (S) Weakness (W) Only when specified by the Scientific Committee. It is not a task done routinely. FAD monitoring (S) 24/7 easily monitored. Important if deployments are done at night. (W) EM cannot record buoy data 6

7 Example (eeye+) Compare location, number and type of sets FAD FSC 7

8 Example (eeye+) Total Catch by set 8

9 Example (eeye+) target species composition 6 BET and 3 YFT 9

10 Example (eeye+) Bycatch estimates (sharks, rays, billfishes and turtles) 10

11 eeye+ FAD monitoring: fishing, deployment and visits 11

12 EMS minimum standards EMS pilot studies on purse seiners have shown that EMS should be more than simply installing cameras 12

13 EMS minimum standards 1- Before the trip (Installation, certification, audits) Customized to vessel level There is not a standard configuration that will cover all vessels in the fleet, thus each installation must be customized at the vessel Tested (and certified) by a third party All vendors should be equally valid, but all systems should be tested through pilot studies before being implemented

14 EMS minimum standards 2- During the trip (Data collection) Robust System: Capable to resist rough conditions at-sea Secure System: Tamper proof system with encrypted data, near-real-time remote online "health statements" and GPS linked imagery. Independence: The system needs to be self-governing with the exception of minimal maintenance by crew. Data storage and autonomy: The system should have enough autonomy to cover a minimum of 4 months.

15 EMS minimum standards BACKGROUND 3- After the trip (Data traceability and analysis) Dedicated image analysis software: System should provide dedicated software to facilitate the review of images. EMS data analysis and reporting: Data analysis and reporting should be done by institutions, organizations and independent companies used to work with on-board observers. Office observers training: Dry observers must have specific qualification. Compatible with ongoing standardized data flow and databases: Compatible data output format.