Final Technical Report: - Southwest Fisheries Science Center - NOAA

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Table 13. Variables selected for models built using oceanographic, net-tow, acoustic backscatter, and a combination of all data to determine whether indices of mid-trophic species improve cetacean-habitat models. The variables selected in the final models for each data type are shown using the following abbreviations: seafloor (depth), sea surface temperature (SST), sea surface salinity (SSS), mixed layer depth (MLD), and the natural logarithm of surface chlorophyll concentrations (CHL). Definitions of the net-tow indices are provided in the text. Area Species Oceanographic Net tow Striped dolphin Depth ETP MLD Manta1 CCE Short-beaked common dolphin Eastern spinner dolphin Bryde's Whale Striped dolphin Short-beaked common dolphin Dall's porpoise Blue whale Beaufort Beaufort 66 Acoustic Backscatter Combined Depth MLD Svmean Beaufort Depth SSS MLD Beaufort Depth SST Beaufort Beaufort SSS MLD CHL Beaufort Beaufort Beaufort Beaufort Beaufort Depth Beaufort Depth SSS CHL Beaufort Depth SST MLD CHL Beaufort SSS MLD Bongo1 Bongo3 Bongo5 Beaufort Bongo3 Bongo4 Bongo5 Beaufort Bongo1 Bongo3 Beaufort Svmean Beaufort Svmean Beaufort Svmean Beaufort Svmean Manta1 Svmean Beaufort Depth SSS MLD Beaufort Depth SST Manta2 Svmean SSS MLD CHL Manta1 Beaufort Depth Bongo1 Bongo5 Beaufort Depth SSS CHL Beaufort Depth SST MLD Bongo3 Bongo5 Svmean Beaufort SSS MLD Bongo1 Bongo3
67 Figure 22. Maps of the predicted number of sightings in the ETP for models that include only oceanographic data or a combination of oceanographic, net-tow, and acoustic backscatter data. Darker colors indicate higher predicted densities. The combined model gave the best fit blue whales in the CCE (Tables 14 and 15). However, predictive power was higher for the oceanographic models (Table 17), and maps of the predicted number of sightings showed several instances in which the combined model predicted higher numbers of sightings in regions where no sightings occurred (Fig. 23). Consequently, the best model for blue whales in the CCE may depend on the question that the model is built to address.
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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
Page 38 and 39: “number of individuals” as the
Page 40 and 41: Encounter Rate and Group Size Model
Page 42 and 43: were built separately for each of t
Page 44 and 45: Expanding models to the entire U.S.
Page 46 and 47: Table 4. Summary of the weighted ef
Page 48 and 49: Consistent with Barlow and Forney (
Page 50 and 51: incorporation of geographic coordin
Page 52 and 53: overwhelming majority of “Bryde
Page 54 and 55: 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 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 106 and 107: Table 22. Proportion of deviance ex
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
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Figure A-1i. Blue whale 116
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Figure A-1k. Baird’s beaked whale
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Figure A-2. Predicted average densi
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Figure A-2b. Short-beaked common do
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Figure A-2d. Pacific white-sided do
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Figure A-2f. Dall’s porpoise 126
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Figure A-2h. Fin whale 128
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Figure A-2j. Humpback whale 130
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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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