West Coast Groundfish Observer Program Manual, Part2 - NOAA

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CHAPTER 6 Sample Method 8 – Inside and Nonrandom • Individuals are part of a species composition sample and have NOT been randomly selected. • Use this method for tagged fish that have been collected opportunistically from a species composition sample. Sample Method 9 – Inside and Random • Individuals are part of a species composition sample and have been randomly selected. • Use this method when taking biological data from all individuals or from randomly selected individuals of a particular species within a species composition sample. Random Sampling In general, individuals used for biospecimen sampling should be selected from within a species composition sample. Only on rare occasions is it necessary to create an independent random sample for biological specimens. Random Sampling Within a Species Composition Sample Selecting individuals for biological sampling from within a species composition sample is encouraged. When collecting individuals from inside a species composition sample, all of the individuals of a single species make up a single population (see Chapter 3 for a review of Random Sampling Theory). There are two ways that a random sample can be taken from a population. • All individuals in the population are selected. • A random subsample of the individuals in the population is selected. 6-8 1/30/2004
CHAPTER 6 Subsamples may be taken using any one of the following random sampling methods. • Spatial – Randomly select a unit of gear or an area (portion of deck or bin, specific basket) to collect individuals from. • Temporal – Randomly select a point in time to collect individuals. • Systematic – Select a random start point (spatial or temporal) and take individuals at set intervals. In order to use a systematic system you must know approximately how many of the target species are in the population. Example: 1. The crew on a trawler is sorting out a scupper and the Observer is whole hauling the discard. 2. The Observer estimates that 100 Pacific Ocean Pearch (POP) will be discarded. There are no other priority species present. 3. The Observer refers to the Biological Sampling chapter in his manual and verifies that he needs to take sexed lengths from 20 of the discarded POP. 4. The Observer decides to do a systematic subsample of the POP within his species composition sample. 5. The Observer divides the estimated number of POP in the haul by the number he needs to sample (100 /20 = 5). This tells him he need to collect 1 fish out of every 5. 1/30/2004 6-9
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CHAPTER 5 Chapter 5 Fixed Gear Samp
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CHAPTER 5 anchor and groundline abo
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CHAPTER 5 Stick (Pipe) Gear Stick (
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CHAPTER 5 Vertical Hook and Line (A
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CHAPTER 5 Albacore Troll Fishery Ve
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CHAPTER 5 Figure 5 - 9: Groundfish
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CHAPTER 5 Sablefish Pots Sablefish
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CHAPTER 5 Safety Concerns on Fixed
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CHAPTER 5 II. Collecting and Docume
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CHAPTER 5 • Skipper Last Name Rec
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CHAPTER 5 • Gear Type - Enter a c
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CHAPTER 5 Trip Form-Hauls Instructi
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CHAPTER 5 TRIP FORM - HAULS Weight
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CHAPTER 5 • Gear consists of mult
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CHAPTER 5 • Sticks - Usually a re
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CHAPTER 5 1. Determine the total nu
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CHAPTER 5 • Poles - Vessels fishi
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CHAPTER 5 skipper gave you for EACH
Page 37 and 38: CHAPTER 5 around the waist. Observe
Page 39 and 40: CHAPTER 5 2. Decide how many skates
Page 41 and 42: CHAPTER 5 5. When sampling period 2
Page 43 and 44: CHAPTER 5 Example of Spatial Sampli
Page 45 and 46: CHAPTER 5 Tip* When doing an averag
Page 47 and 48: CHAPTER 5 Weight Method 9 - Pacific
Page 49 and 50: CHAPTER 5 • Pre-measure the lengt
Page 51 and 52: CHAPTER 5 Fixed Gear Catch Form Ins
Page 53 and 54: CHAPTER 5 TIP* Species which are un
Page 55 and 56: CHAPTER 5 Haul # FIXED GEAR CATCH F
Page 57 and 58: CHAPTER 5 • If only a portion of
Page 59 and 60: CHAPTER 5 • Reason for Discard -
Page 61 and 62: CHAPTER 5 Haul # SPECIES COMPOSITIO
Page 63 and 64: CHAPTER 5 • Weight Method - Docum
Page 65 and 66: CHAPTER 5 Trip Discard Form Page __
Page 67 and 68: CHAPTER 5 Haul # 0 1 FIXED GEAR CAT
Page 69 and 70: Species Composition Measurements an
Page 71 and 72: Haul # FIXED GEAR CATCH FORM* Page
Page 73 and 74: CHAPTER 5 Species Composition Measu
Page 75 and 76: CHAPTER 5 Haul # FIXED GEAR CATCH F
Page 77 and 78: CHAPTER 5 Rod and Reel Example Offi
Page 79 and 80: CHAPTER 5 Haul # SPECIES COMPOSITIO
Page 81 and 82: CHAPTER 6 Chapter 6 Biological Samp
Page 83 and 84: CHAPTER 6 II. Data Collection Prior
Page 85 and 86: CHAPTER 6 4. Scales • From the fi
Page 87: CHAPTER 6 III. Biological Specimen
Page 91 and 92: CHAPTER 6 • Size the sample appro
Page 93 and 94: CHAPTER 6 IV. Data Collection Proce
Page 95 and 96: CHAPTER 6 Measure fish using the fo
Page 97 and 98: CHAPTER 6 Figure 6- 4: Location of
Page 99 and 100: CHAPTER 6 Sexing Sablefish The gona
Page 101 and 102: CHAPTER 6 Sexing Flatfish Flatfish
Page 103 and 104: CHAPTER 6 Sexing Salmon Salmon gona
Page 105 and 106: CHAPTER 6 4. Remove the otoliths fr
Page 107 and 108: CHAPTER 6 9. Record the weight, sex
Page 109 and 110: CHAPTER 6 3. Hook and Line Gear -
Page 111 and 112: CHAPTER 6 Collecting Salmon Scales
Page 113 and 114: CHAPTER 6 Tagged Fish Data Collecti
Page 115 and 116: CHAPTER 6 5. Collect otoliths from
Page 117 and 118: CHAPTER 6 Collecting Fish Specimens
Page 119 and 120: CHAPTER 6 Length Frequency Form Ins
Page 121 and 122: CHAPTER 6 Haul # LENGTH FREQUENCY F
Page 123 and 124: CHAPTER 6 • Species Code - Record
Page 125 and 126: CHAPTER 6 . Haul # BIOSPECIMEN FORM
Page 127 and 128: CHAPTER 6 • Time and Date of Capt
Page 129 and 130: CHAPTER 6 Specimen Collection Label
Page 131 and 132: CHAPTER 7 Chapter 7 Marine Mammals,
Page 133 and 134: CHAPTER 7 they should not be permit
Page 135 and 136: CHAPTER 7 Marine Mammal Data Collec
Page 137 and 138: CHAPTER 7 Figure 7-1: Pinniped Meas
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CHAPTER 7 Collecting Canine Teeth f
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CHAPTER 7 contamination. DNA contam
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CHAPTER 7 3. If the animal is a sea
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CHAPTER 7 Marine Mammal Behaviors A
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CHAPTER 7 Pinnipeds • Jug handle
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CHAPTER 7 • Catch Category - Reco
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CHAPTER 7 Haul # Page ____ of ____
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CHAPTER 7 SPECIMEN COLLECTION LABEL
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CHAPTER 7 • Closest approach - No
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CHAPTER 7 Figure 7-6: Marine Mammal
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CHAPTER 7 II. Seabirds Introduction
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CHAPTER 7 Endangered, Threatened an
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CHAPTER 7 identify birds to the hig
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CHAPTER 7 Collect seabird take, int
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CHAPTER 7 value is listed on the ba
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CHAPTER 7 SEABIRD SIGHTING FORM Tri
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CHAPTER 7 • Check to see if there
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CHAPTER 7 Eastern Pacific Marine Tu
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CHAPTER 7 Identification • Left C
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CHAPTER 7 Tags • Tags Present Whe
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CHAPTER 7 Figure 7-10: Sea Turtle L
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CHAPTER 8 CHAPTER 8 Chapter 8 Healt
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CHAPTER 8 CHAPTER 8 not passed a US
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CHAPTER 8 CHAPTER 8 3. Locate life
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CHAPTER 8 CHAPTER 8 20. Water/weath
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CHAPTER 8 CHAPTER 8 • Lift correc
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CHAPTER 8 CHAPTER 8 Seasickness One
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CHAPTER 8 CHAPTER 8 side, be aware
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CHAPTER 8 CHAPTER 8 you have a righ
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CHAPTER 8 CHAPTER 8 Illness and Acc
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CHAPTER 8 CHAPTER 8 Sending a May D
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CHAPTER 8 CHAPTER 8 Donning the Imm
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CHAPTER 8 CHAPTER 8 The Seven Steps
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CHAPTER 8 CHAPTER 8 Summary 7. Play
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CHAPTER 8 CHAPTER 8 Navigational Re
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CHAPTER 8 CHAPTER 8 Emergency Requi
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CHAPTER 8 CHAPTER 8 Means of Escape
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CHAPTER 8 CHAPTER 8 comply with the
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CHAPTER 8 CHAPTER 8 Injury Placard
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CHAPTER 8 CHAPTER 8 Miscellaneous R
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APPENDIX A Appendix A: Fish Species
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APPENDIX A Code Common Name Scienti
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APPENDIX B Appendix B: Invertebrate
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APPENDIX C Appendix C: Marine Mamma
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APPENDIX D Appendix D: Seabirds Spe
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APPENDIX E Appendix E: Catch Catego
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APPENDIX F aurora, S. aurora bank,
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APPENDIX H Appendix H: Random Numbe
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L Cylinder V=πR² x L R VOLUMETRIC
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APPENDIX J Centimeter Pounds Centim
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APPENDIX L Appendix L: Injury Key f
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APPENDIX M Appendix M: Injury Key f
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APPENDIX N Appendix N: List of Obse
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APPENDIX O The U.S. groundfish fish
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APPENDIX O may need to be considere
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APPENDIX O that are subject to the
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APPENDIX O (8) Fail to meet the ves
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APPENDIX P Appendix P: 50 CFR Part
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APPENDIX P vessel that would delay
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APPENDIX P safety rather than to su
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APPENDIX P sea as a result of this
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APPENDIX P § 600.746 Observers. (a
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APPENDIX R Appendix R: Radio Commun
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APPENDIX R Since most radio communi
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APPENDIX S Appendix S: Material Saf
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APPENDIX S FLAMMABILITY CLASS (OSHA
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APPENDIX S MUTAGENIC DATA: Availabl
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APPENDIX T Appendix T: Chattilon Fl
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APPENDIX U ANAL SPINE PRESENT YES N
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APPENDIX V ANAL FIN SLANT, AS COMPA
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APPENDIX W Describe the color and m
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APPENDIX Y Appendix Y: Useful Websi
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APPENDIX Y Observer Associations, I
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GLOSSARY A - B ABC - “Acceptable
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Flatfish - fish which are laterally
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which must be discarded in the grou
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if it is not at anchor or at dock,
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West Coast Groundfish Observer Program Manual, Part2 - NOAA

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