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. 2018 Jul 16;13(7):e0201080. doi: 10.1371/journal.pone.0201080

Correction: High mortality of blue, humpback and fin whales from modeling of vessel collisions on the U.S. West Coast suggests population impacts and insufficient protection

R Cotton Rockwood, John Calambokidis, Jaime Jahncke
PMCID: PMC6047827  PMID: 30011325

The column heading "Mortality per 104 km2" for Tables 49 appears incorrectly. Please see the corrected Tables 49 here.

Table 4. Statistics of blue whale strike mortality within the Biologically Important Areas (BIAs) defined in Calambokidis et al. 2015.

Total mortality, mortality per 100,000 km2 and percent of total study area mortality are reported for each BIA.

Name BIA Area (km2) Months of peak abundance Area Mortality Mortality per 105 km2 Percent of total mortality
Gulf of the Farallones 5,243 July—November <1 14 4%
Monterey Bay to Pescadero Pt 2,378 July—October <1 4 <1%
Santa Barbara Channel to San Miguel 1,981 June—October <1 22 2%
Pt Conception to Pt Sal 1,743 June—October <1 9 <1%
Pt Arena to Fort Bragg 1,419 August—November <1 1 <1%
Santa Monica Bay to Long Beach 1,187 June—October <1 51 3%
Tanner-Cortez Bank 1,076 June—October <1 5 <1%
San Diego 984 June—October <1 20 1%
San Nicholas Is 427 June—October <1 3 <1%

Table 9. Mortality on and off the continental shelf (defined by the 200-meter isobath).

Mortality per 100,000 km2 and percent of total study area mortality are also reported for each region.

    BLWH Mortality HUWH Mortality FIWH Mortality
Area Name Area (km2) Area mortality Mortality per 105 km2 Percent of total mortality Area mortality Mortality per 105 km2 Percent of total mortality Area mortality Mortality per 105 km2 Percent of total mortality
Continental shelf 57,030 3 5 15% 8 14 36% 1 2 3%
>200m 754,905 15 2 85% 14 2 64% 41 6 97%

Table 5. Statistics of humpback whale strike mortality within the Biologically Important Areas (BIAs) defined in Calambokidis et al. 2015.

Total mortality, mortality per 100,000 km2 and percent of total study area mortality are reported for each BIA.

Name BIA Area (km2) Months of peak abundance Area Mortality Mortality per 105 km2 Percent of total mortality
Gulf of the Farallones—Monterey Bay 9,761 July—November 3 32 17%
Northern WA 3,393 May—November <1 6 1%
Stonewall and Heceta Bank 2,573 May—November <1 <1 <1%
Santa Barbara Channel—San Miguel 2,639 March—September <1 15 2%
Morro Bay to Pt Sal 1,908 April—November <1 2 <1%
Fort Bragg to Pt. Arena 1,591 July—November <1 2 <1%
Pt St. George 1,233 July—November <1 <1 <1%

Table 6. Mortality statistics for shipping lanes.

Mortality per 100,000 km2 and percent of total study area mortality are also reported for each region.

    Blue Whales Humpback Whales Fin Whales
Region Area (km2) Area Mortality Mortality per 105 km2 Percent of total mortality Area Mortality Mortality per 105 km2 Percent of total mortality Area Mortality Mortality per 105 km2 Percent of total mortality
San Francisco 1,136 1 65 4% 3 255 13% <1 20 <1%
Southern California 2,314 1 61 8% <1 36 4% 1 48 3%
Washington 166 <1 4 <1% <1 6 <1% <1 <1 <1%
Waters outside lanes 798,015 16 2 86% 18 2 81% 41 5 96%

Table 7. Mortality within National Marine Sanctuaries.

Mortality per 100,000 km2 and percent of total study area mortality are also reported for each sanctuary.

    Blue Whales Humpback Whales Fin Whales
National Marine Sanctuary Area (km2) Area Mortality Mortality per 105 km2 Percent of total mortality Area Mortality Mortality per 105 km2 Percent of total mortality Area Mortality Mortality per 105 km2 Percent of total mortality
Cordell Bank 3,331 <1 12 2% 1 34 5% <1 10 <1%
Channel Islands 3,818 <1 13 3% <1 6 1% <1 10 <1%
Greater Farallones 8,548 1 14 7% 4 49 19% <1 7 1%
Monterey Bay 15,795 <1 5 4% 3 18 13% 2 10 4%
Olympic Coast 8,259 <1 <1 <1% <1 9 4% <1 <1 <1%

Table 8. Mortality within sovereign waters (3 Nm offshore) for each of the three west coast states, California, Oregon and Washington.

Mortality per 100,000 km2 and percent of total study area mortality are also reported for each state.

    Blue Whale Humpback Whale Fin Whale
Jurisdiction Name Area (km2) Area mortality Mortality per 105 km2 Percent of total mortality Area mortality Mortality per 105 km2 Percent of total mortality Area mortality Mortality per 105 km2 Percent of total mortality
California 14,280 <1 5 4% <1 4 3% <1 2 <1%
Oregon 3,268 <1 <1 <1% <1 2 <1% <1 <1 <1%
Washington 2,049 <1 <1 <1% <1 2 <1% <1 <1 <1%

In the Results and Discussion sections, the units for "mortality per area" and "strike intensity" also appear incorrectly. The correct units for "mortality per area" and "strike intensity" should be 105 km2.

Reference

  • 1.Rockwood RC, Calambokidis J, Jahncke J (2017) High mortality of blue, humpback and fin whales from modeling of vessel collisions on the U.S. West Coast suggests population impacts and insufficient protection. PLoS ONE 12(8): e0183052 10.1371/journal.pone.0183052 [DOI] [PMC free article] [PubMed] [Google Scholar]

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