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Published byLeslie Tyler Modified over 9 years ago
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SCAITE Questionnaire Summary By Dario W. Diehl and Ken Schiff
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Presentation Topics Results Categories to standardize Discussions on Standardizations
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Respondants POTW – 4 Consultants – 2 Academic – 1
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SAMPLING
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Representativeness
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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)
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Retrawling Other re-trawl conditions: low catch (2), not bottom contact (2)
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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)
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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
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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)
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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)
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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
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Data All agencies QA data entry – nearly all do 100% data audits on 100% of samples – Allowable error rates range from 0 to 10%
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Categories To Standardize Sampling Location Accuracy Sampling Representativeness Sampling Precision Trawling corrective action Gear specifications On deck processing Taxonomy Personnel and Training Data reporting
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Standardization TimeLine Discussions at: – SCAITE meetings – Via email – Coordinate during Bight Field Methods meetings
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