Final Technical Report: - Southwest Fisheries Science Center - NOAA

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Table 22. Proportion of deviance explained (Expl. Dev.) and average squared prediction error (ASPE) for the final encounter rate (ER) and group size (GS) models for the CCE. For the encounter rate models, ASPE calculations were based on Anscombe residuals to account for the quasi-likelihood error distribution. The large range of ASPE values for the group size models in part reflects the range of species-specific group sizes (e.g., short-beaked common dolphins tend to occur in highly variable groups of up to thousands of animals while blue whales are usually found singly or in small groups). Encounter Rate Group Size Species Expl. Dev. ASPE Expl. Dev. ASPE Striped dolphin 0.10 0.04 0.09 4,429 Short-beaked common dolphin 0.13 0.17 0.02 61,267 Risso’s dolphin 0.08 0.07 0.05 743.71 Pacific white-sided dolphin 0.28 0.12 0.35 44,405 Northern right whale dolphin 0.18 0.04 0.17 12,423 Dall’s porpoise 0.42 0.37 0.11 8.20 Sperm whale 0.05 0.09 0.05 61.95 Fin whale 0.09 0.09 0.06 1.86 Blue whale 0.22 0.14 0.08 0.75 Humpback whale 0.33 0.10 0 2.25 Baird’s beaked whale 0.08 0.02 0.35 26.79 Small beaked whales 0.07 0.08 0.14 1.08 84
Figure 26. Yearly and averaged densities predicted for Dall’s porpoise by the final CCE models. Predicted values were smoothed using inverse distance weighting (see Section 3.5.1 for more details). Black dots show sighting locations. 4.9 <strong>Final</strong> Models for the Eastern Tropical Pacific The figures in Appendix B present the predicted distributions of population density for the fifteen ETP species for which cetacean-habitat models were developed. Those plots display predictions for each survey year separately and for all survey years combined. Of the ETP species modeled, striped dolphins included the largest number of sightings (n=1205) and blue whales included the fewest (n=109). The effective degrees of freedom for each term in the final encounter rate and group size models are given in Tables 23 and 24, respectively. A comparison of the simple and complex encounter rate and group size models that were evaluated for each species was presented in Section 4.2 and Tables 10 and 11. The simple encounter rate and group size models were chosen as the final best models for all species except Cuvier’s beaked whale. 85
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U N I R A P E D T T E M D S E N TA
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C O L A N IO T A N U N C I EA .S. D
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This report was prepared under cont
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Table of Contents Acronyms and Abbr
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C.1 Journal Publications ..........
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Figure 18. Encounter rate models bu
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List of Tables Table 1. Summary of
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Appendix B, Table B-6. Summary of m
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Acknowledgements This project was f
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of these choices as possible and us
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Although our models include most of
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2.0 Background The Navy and other m
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comparison is based on a separate s
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Figure 1. Transects (green lines) s
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used to evaluate the ability of sum
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3.1.5 Mid-trophic Sampling with Net
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variable. Interpolated maps of the
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Table 2. Variogram model results. A
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“number of individuals” as the
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Encounter Rate and Group Size Model
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were built separately for each of t
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Expanding models to the entire U.S.
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Table 4. Summary of the weighted ef
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Consistent with Barlow and Forney (
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incorporation of geographic coordin
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overwhelming majority of “Bryde
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the genera Ziphius and Mesoplodon.
Page 56 and 57: Table 7. Geographically stratified
Page 58 and 59: above, and the data themselves, are
Page 60 and 61: (hereafter “summer”). SWFSC has
Page 62 and 63: avoid these problems, we decided to
Page 64 and 65: Figure 9. Thermocline depth (m) obs
Page 66 and 67: Attempts to adjust search parameter
Page 68 and 69: CAMMS 1991 PODS 1993 ORCAWALE 1996
Page 70 and 71: 4.2 Modeling Framework : GLM and GA
Page 72 and 73: 4.2.4 Conclusions Regardings Modeli
Page 74 and 75: Table 10 cont. Comparison of the si
Page 76 and 77: Table 11 cont. Comparison of the si
Page 78 and 79: Figure 15. The transect lines used
Page 80 and 81: A) Striped dolphin 10 km B) Short-b
Page 82 and 83: dependent. For example, the number
Page 84 and 85: Figure 19. Predicted average densit
Page 86 and 87: ecosystem, eastern spinner dolphins
Page 88 and 89: Table 13. Variables selected for mo
Page 90 and 91: Table 14. Starting and final AIC va
Page 92 and 93: Table 17. Ratios of observed to pre
Page 94 and 95: species represented in the acoustic
Page 96 and 97: 0.29 (Risso’s dolphin) to 3.20 (n
Page 98 and 99: Figure 25. Sample 2005 validation p
Page 100 and 101: Table 18. (continued) 1991 1993 Nor
Page 102 and 103: Blue whales had the greatest deviat
Page 104 and 105: Table 20. Abundance (number of anim
Page 108 and 109: Figure 27. Average density (AveDens
Page 110 and 111: Table 23. Effective degrees of free
Page 112 and 113: We attempted to build encounter rat
Page 114 and 115: 5.0 Conclusion The field of predict
Page 116 and 117: 6.0 Transition Plan The models of c
Page 118 and 119: needed to ensure that the SDSS rema
Page 120 and 121: Administrative Report LJ-07-02. NOA
Page 122 and 123: Forney KA, Barlow J (1993) Prelimin
Page 124 and 125: Redfern JV, Barlow J, Ballance LT,
Page 126 and 127: Appendix A: Detailed Model Results
Page 128 and 129: Table A-1 (continued) Blue whale 19
Page 130 and 131: Figure A-1a. Striped dolphin 108
Page 132 and 133: Figure A-1c. Risso’s dolphin 110
Page 134 and 135: Figure A-1e. Northern right whale d
Page 136 and 137: Figure A-1g. Sperm whale 114
Page 138 and 139: Figure A-1i. Blue whale 116
Page 140 and 141: Figure A-1k. Baird’s beaked whale
Page 142 and 143: Figure A-2. Predicted average densi
Page 144 and 145: Figure A-2b. Short-beaked common do
Page 146 and 147: Figure A-2d. Pacific white-sided do
Page 148 and 149: Figure A-2f. Dall’s porpoise 126
Page 150 and 151: Figure A-2h. Fin whale 128
Page 152 and 153: Figure A-2j. Humpback whale 130
Page 154 and 155: Figure A-2l. Small beaked whales 13
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Table B-2. Summary of model validat
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Table B-10. Summary of model valida
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Figure B-1. Predicted yearly and av
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Figure B-1. b) Eastern spinner dolp
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Figure B-1. c) Whitebelly spinner d
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Figure B-1. d) Striped dolphin 168
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Figure B-1. e) Rough-toothed dolphi
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Figure B-1. f) Short-beaked common
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Figure B-1. g) Bottlenose dolphin 1
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Figure B-1. h) Risso’s dolphin 17
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Figure B-1. i) Cuvier’s beaked wh
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Figure B-1. j) Blue whale 180
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Figure B-1. k) Bryde’s whale 182
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Figure B-1. l) Short-finned pilot w
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Figure B-1. m) Dwarf sperm whale 18
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Figure B-1. n) Mesoplodon beaked wh
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Figure B-1. o) Small beaked whales
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Figure B-2. Predicted average densi
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Figure B-2. (cont.) c) Whitebelly s
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Figure B-2. (cont.) g) Bottlenose d
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Figure B-2. (cont.) k) Bryde’s wh
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Figure B-2. (cont.) o) Small beaked
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Ferguson MC (2005) Cetacean Populat
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Barlow J, Kahru M, Mitchell BG (In
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Memorandum NMFS-SWFSC-374, U.S. Dep
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