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SCAITE Questionnaire Summary

SCAITE Questionnaire Summary. By Dario W. Diehl and Ken Schiff. Presentation Topics. Results Categories to standardize Discussions on Standardizations. Respondants. POTW – 4 Consultants – 2 Academic – 1. SAMPLING. Representativeness. Precision.

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SCAITE Questionnaire Summary

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  1. SCAITE Questionnaire Summary By Dario W. Diehl and Ken Schiff

  2. Presentation Topics • Results • Categories to standardize • Discussions on Standardizations

  3. Respondants • POTW – 4 • Consultants – 2 • Academic – 1

  4. SAMPLING

  5. Representativeness

  6. Precision • Time on Deck: 10 min exactly (6), 8-11 min (1) • Time on Bottom: 8-15 min (2), only deck time (1) • Distance on Deck: 450-600m (1), 450+/-10% (1) • Speed: 1.5-2.0 knts (1), 1.5-2.5 (1), 1.7-2.1 (1)

  7. Retrawling Other re-trawl conditions: low catch (2), not bottom contact (2)

  8. Gear • Cod end mesh size: 1.3 cm (4), 0.64 (1) • Body mesh size: 3.8 cm (2) • Net length: not sure (3), 8 m (1) • Net Opening: 7.6 m (4), 8 m (1) • Otter Board: 76 x 50 cm (4), variable (1) • Bridle length: 23 m (4)

  9. Taxonomy • All ID to lowest taxon possible • All voucher, depends –Agency , taxon, project • Voucher verification: as needed on specimen or photo IDs, mostly internal review • External verification: outside (3), Bight (3) • Mixed corrective actions: usually review/retraining

  10. FIDs/Abundance • Preservation: freeze(4), photo(2), formalin(5), alcohol(5): 95%ETOH, 70% ETOH, 45% Isoprop • Verify Counts: Crew chief(4), Chief Taxonomist • Frequency: 8sp/cruise(2), twice daily, one/day, after survey, only Bight, NA, only measure 125/sp then weigh the rest • Count error: 1%, <5%, 10%(2), NA (3)

  11. Biomass • Verify Biomass: Yes(5), No, at office • Frequency: 8sp/cruise(2), twice daily, one/day, after survey, only Bight, NA • Biomass error: 2.5%, <10%, 10%, NA • Performance Measures: No (5), Yes (2)

  12. Personnel and Training • Range in Crew Chief requirements was perhaps the most variable • 1 to 10+ years experience, job classification, skill base needs, virtually no ongoing training • Taxonomists required the most experience and skill knowledge • Performance requirements were poorly described • Science Hands were the most consistent • Little to no experience, lots of supervision

  13. Data • All agencies QA data entry • nearly all do 100% data audits on 100% of samples • Allowable error rates range from 0 to 10%

  14. Categories To Standardize • Sampling Location Accuracy • Sampling Representativeness • Sampling Precision • Trawling corrective action • Gear specifications • On deck processing • Taxonomy • Personnel and Training • Data reporting

  15. Standardization TimeLine • Discussions at: • SCAITE meetings • Via email • Coordinate during Bight Field Methods meetings

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