SCAITE Questionnaire Summary

ByDario W. Diehl and Ken Schiff

Presentation Topics

• Results• Categories to standardize• Discussions on Standardizations

Respondants

• POTW – 4• Consultants – 2• Academic – 1

SAMPLINGLocation Accuracy

0.5 nm 100 m Not Specified

Res

pon

se (

%)

0

20

40

60

80

100

1 1

5

Depth Difference from Nominal

Delta 10% Not Monitored

Res

pon

se (

%)

0

20

40

60

80

100

6

1

RepresentativenessAllowable Depth Change

Delta 10% 10% w Exceptions Not Monitored

Re

sp

on

se

(%

)

0

20

40

60

80

100

5

1 1

Use Bottom Sensor

Yes No Occasionally

Re

sp

on

se

(%

)

0

20

40

60

80

100

5

21

Review Sensor Frequency Decisions

After Tow End of Day End of Cruise No discisions

Re

sp

on

se

(%

)

0

20

40

60

80

100

2

3

1 1

PrecisionTrawl Criteria

Deck Time GPS PT

Res

pon

se (

%)

0

20

40

60

80

100

6

1 1

•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)

RetrawlingRetrawl Timing

Day Cruise Year

Res

pon

se (

%)

0

20

40

60

80

100

3

4

Trawl Fail Cause

Snag/Foul Empty Net Equipment Fail L/L

Res

pon

se (

%)

0

20

40

60

80

100

5

3

1 1

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

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)

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 Key

Miller&Lea AFS SCAMIT B'08 Eschmeyer

Res

pon

se (

%)

0

20

40

60

80

100

3

5

21 1

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)

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)

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

Data

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

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

Standardization TimeLine

• Discussions at:– SCAITE meetings– Via email– Coordinate during Bight Field Methods meetings