NOAA Technical Memorandum NMFS - Southwest Fisheries ...

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Table 3. Mean acoustic detection distances of dolphin schools stratified by Beaufort sea state for each survey. Distance is given in nautical miles (nmi). Overall mean acoustic detection distance for all detections on each cruise is also given. Standard deviations are shown in parenthesis. Beaufort 0 and 1 were combined due to small sample size. Beaufort Sea State Sample Size Overall 0-1 2 3 4 5+ STAR 00 362 3.5 (1.8) 3.7 (1.5) 3.5 (1.6) 3.5 (1.9) 3.1 (1.8) 3.9 (1.9) ORCAWALE 111 2.1 (1.7) 1.1 (1.2) 0.4 (0.2) 1.9 (1.6) 2.4 (1.9) 2.5 (1.5) HICEAS 205 4.2 (2.6) 2.7 (2.5) 5.6 (2.6) 4.6 (2.3) 4.0 (2.6) 4.0 (2.5) STAR 03 182 2.1 (1.7) 0.8 (0.9) 1.7 (1.5) 1.7 (1.6) 2.5 (1.9) 2.4 (1.8) SPLASH 21 0.6 (0.6) 1.1 (0.8) 0.5 (0.3) 1.6 (0.6) 0.4 (0.6) 0.5 (0.7) PICEAS 121 2.5 (1.5) 0.6 (0.8) 2.0 (1.5) 2.6 (1.7) 2.8 (1.5) 2.3 (1.2) STAR 06 499 3.4 (1.8) 3.3 (1.9) 3.5 (2.2) 3.6 (1.9) 3.3 (1.9) 3.2 (1.6) Overall 1501 3.1 (2.0) 2.6 (2.0) 3.0 (2.2) 3.2 (2.0) 3.2 (2.0) 3.2 (1.9) Table 4. Number and percentage of sperm whales detected by acoustic methods, visual methods, and both methods for each survey. For acoustic methods, the number of detections within 3 nmi of the ship is given in parentheses. Acoustic Visual Both Cruise n % n % n % Total STAR 00 23 (5) 76% (10%) 0 0% 7 23% 30 ORCAWALE 24 (9) 72% (27%) 2 6% 7 21% 33 HICEAS 109 (16) 73% (11%) 8 5% 31 21% 148 STAR 03 16(2) 69% (9%) 0 0% 7 30% 23 SPLASH 127 (39) 75% (23%) 4 2% 37 22% 168 PICEAS 27 (2) 71 (5%) 1 3% 10 26% 38 STAR 06 28 (11) 68 (27%) 3 7% 10 24% 41 Total 354 (84) 73% (17%) 18 4% 109 23% 481 24
Table 5. Summary statistics for acoustic detection distances of sperm whales for each survey, and for the total of the combined surveys. Detection Distance (nmi) Cruise Sample Size Mean St. Deviation Range STAR 00 19 6.5 3.2 2.3 - 15 ORCAWALE 21 6.4 4.6 1.4 - 19 HICEAS 78 8.4 4.6 1.7 - 20 STAR 03 12 4.2 2.3 1 - 8 SPLASH 72 3.3 2 0.7 - 10 PICEAS 10 8.8 5.3 3 - 21 STAR 06 19 4.3 3 0.8 - 12.7 Combined 231 5.9 4.2 0.7 - 21 Table 6. Number of minke whales detected using acoustic methods, visual methods, and both methods for each survey. For acoustic methods, the number of detections within 3 nmi of the ship is given in parentheses. Cruise Acoustic Visual Both Total STAR 00 0 0 0 0 ORCAWALE 0 3 0 3 HICEAS 47(25) 0 0 47 STAR 03 27(11) 0 0 27 SPLASH 0 6 0 6 PICEAS 2(0) 0 0 2 STAR 06 9(2) 0 0 9 Total 85(38) 9 0 94 Table 7. Summary statistics for the acoustic detection distances of minke whales for each survey, and for the total of the combined surveys. Detection Distance (nmi) Cruise Sample Size Mean St. Deviation Range STAR 00 0 - - - ORCAWALE 0 - - - HICEAS 35 3.7 1.8 0.5 - 8 STAR 03 16 4.3 1.5 1.7 - 7 SPLASH 0 - - - PICEAS 1 6.3 - - STAR 06 3 3.9 2.6 2 - 7 Combined 55 3.9 1.7 0.5 - 8 25
Page 1 and 2: U N I R A P E D T T E M D S E N TA
Page 3: C O L A N IO T A N U N C I EA .S. D
Page 6 and 7: LIST OF TABLES Table 1. Acoustics p
Page 8 and 9: LIST OF FIGURES, con’t Figure 17.
Page 11 and 12: ACOUSTIC STUDIES OF MARINE MAMMALS
Page 13 and 14: transit to and from San Diego, Cali
Page 15 and 16: VHF radio and received using a modi
Page 17 and 18: acoustic detection distance of sper
Page 19 and 20: significantly larger than the mean
Page 21 and 22: vocalizations detected by the acous
Page 23 and 24: were less likely to be detected by
Page 25 and 26: pilot whale (n = 4), common bottlen
Page 27 and 28: species over long ranges, at night,
Page 29 and 30: VII. LITERATURE CITED Au, D., and W
Page 31 and 32: detection and satellite-tracking le
Page 33: Table 2. Hydrophone array character
Page 37 and 38: Table 9. Number of sightings and th
Page 39 and 40: Table 11. Number of schools from wh
Page 41 and 42: Table 13. Number of sonobuoys deplo
Page 43 and 44: M icrophone Hydrophones 1 2 3 4 5 6
Page 45 and 46: Figure 6. Regression plot of the ac
Page 47 and 48: Figure 10. Regression plot of the a
Page 49 and 50: Figure 14. Map of study area and mi
Page 51 and 52: Figure 18. Map of study area and fa
Page 53 and 54: Figure 22. Map of study area and Fr
Page 55 and 56: Figure 26. Map of study area and bo
Page 57 and 58: Figure 30. Map of study area and pi
Page 59 and 60: Figure 34. Map of study area and no
Page 61 and 62: Figure 38. Regression plot of the r
Page 63 and 64: VIII. APPENDICES A. Publications Ap
Page 65 and 66: Oswald, J. N. 2006. An examination
Page 67 and 68: Ocean and the Mediterranean Sea. Se
Page 69: RECENT TECHNICAL MEMORANDUMS SWFSC

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