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PISCO fish sampler training program: An introduction

PISCO fish sampler training program: An introduction. 1. The PISCO annual survey 2. Fish data collection 3. Safety considerations 4. Schedule. Annual surveys. Purposes. 1. To assess annual and spatial variability of community structure;

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PISCO fish sampler training program: An introduction

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  1. PISCO fish sampler training program: An introduction 1. The PISCO annual survey 2. Fish data collection 3. Safety considerations 4. Schedule

  2. Annual surveys Purposes 1. To assess annual and spatial variability of community structure; 2. To identify the role of variation in habitat variables in explaining patterns; 3. To establish how spatio-temporal variability might be driven by oceanographic features (e.g., internal waves) and conditions (e.g., El Nino), and altered by anthropogenic actions (e.g., marine reserves).

  3. Annual surveys When July-October (early=benthic-midwater; later=canopy) Where • Different oceanographic regimes • North and south of Monterey Bay • Carmel Bay • Big Sur coast • Above, below, and at Pt Conception break • Channel Islands • 2. Marine reserves and paired controls • Hopkins MLR • Pt Lobos • Big Creek • Anacapa Island

  4. Annual survey region Annual survey region San Francisco Bay San Francisco Bay Monterey Bay Monterey Bay Pt. Conception Pt. Conception

  5. Annual surveys Sample design 1999 …… 200n Time Site 1 2 3 25 …… 1 2 Area Zone (5, 10, 15, 20m) S MS MD D Transects 30x2x2m

  6. Annual surveys What • All identifiable fish- Rockfishes, surfperches, greenlings • Estimate sizes- total length to nearest centimeter • Three levels in water column (where canopy present)- bottom- midwater- surface canopy (conducted later in year)

  7. Fish transect Phase 1 Diver 2 - Lays tape - Count midwater fish Diver 1 - Lays tape - Count bottom fish

  8. Fish transect Phase 2 Diver 2 - Lays tape - Count canopy fish Diver 1 - Estimates canopy Entire transect duration: <20min

  9. Fish sampling datasheet

  10. 6 Aug 2001 Stillwater East Craig Syms 2 6 1005 1040 1 A 20 8 25, 30, 60 SCAR HDEC ELAT DVAC SATR SMYS SMEL OPIC CNIC 9 (14) 25, 35 17 (5) 35, 20 20 (3) 24 15 (4) 8 (26) 30, 35 12, 14, 13 (2) 25 13 18, 32 24 26, 27, 30 (2) 12, 12, 14 10, 9, 9 (3) SFLA 14, 12, 13, 20 22 (4) 35 30, 35, 38 BFRE KGB 9, 10 8, 6, 7 (12) 4, 6, 5, 7 3 (12) 4 (5) 5 (10), 8, 7 4 (6), 5, 7 4 (15) 4 (5), 5 Ideal sample datasheet

  11. Actual sample datasheet

  12. Safety considerations • Dive profiles- Approved by DSO- Well within no-decompression limits- Maximum depth 20m- 5 min safety stops mandatory on dives below 10m • Buddy system- Members of a dive team are always in visual contact • Site considerations- Diving will only be conducted in good conditions • Live boating- Fish teams are usually live boated

  13. Evaluation 1. Ongoing 2. Some self-evaluation required 3. End of day - submit data sheets 4. Feedback

  14. Course schedule 1. Fish identification 2. Fish sizing 3. Transecting technique 4. Practice

  15. Today’s schedule 1. Fish identification - pictures until 1100hrs 2. 1100: Move to aquarium 3. Lunch 4. Fish identification - live fish until 1350 hrs 5. 1350: Move to Hopkins for EANx course

  16. Tomorrow’s schedule 1. 0800: Briefing and revision 2. 0900: Dive - fish identification 3. 1200: Lunch 4. 1230: Fish sizing (lecture room) 5. 1300-1700: Dive - fish sizing

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