Association Between Blue Whale (Balaenoptera musculus) Mortality and Ship Strikes Along the California Coast

@article{BermanKowalewski2010AssociationBB,
  title={Association Between Blue Whale (Balaenoptera musculus) Mortality and Ship Strikes Along the California Coast},
  author={Michelle Berman-Kowalewski and F. Gulland and S. Wilkin and J. Calambokidis and B. Mate and J. Cordaro and D. Rotstein and P. Collins and K. Fahy and S. Dover},
  journal={Aquatic Mammals},
  year={2010},
  volume={36},
  pages={59-66}
}
Blue whales (Balaenoptera musculus) are distributed worldwide, and although severely depleted by commercial whaling, their abundance off the California coast now appears to be increasing. Little is known about natural causes of mortality of blue whales, but human-related mortality continues despite legal protection. Ship strikes are a significant mortality factor for other species of baleen whale, and changes in shipping traffic have been advocated to minimize further deaths. Between 1988 and… Expand

Figures from this paper

Review of the Sri Lanka blue whale (Balaenoptera musculus) with observations on its distribution in the shipping lane
A population of blue whales is resident off the southern coast of Sri Lanka and has been observed year-round by the crew of a whalewatching vessel, Raja & the Whales, a few miles south of MirissaExpand
Using blue whale (Balaenoptera musculus) photographic-identification sightings to assess potential vessel-whale encounters in the Santa Barbara Channel
In 2007 six blue whales (Balaenoptera musculus) were found dead in the Southern California Bight with four of the deaths resulting from vessel strikes. To reduce the spatial overlap of vessels andExpand
Do ship strikes threaten the recovery of endangered eastern North Pacific blue whales
Blue whales were targeted in the North Pacific from 1905–1971 and are listed as endangered by the IUCN. Despite decades without whaling, abundance estimates for eastern North Pacific (ENP) blueExpand
Diel differences in blue whale (Balaenoptera musculus) dive behavior increase nighttime risk of ship strikes in northern Chilean Patagonia.
TLDR
The association to diurnal prey migration and shallow nighttime dive behavior, suggests that blue whales are at increased risk of ship collisions during periods of darkness since the estimated maximum ship draft of vessels operating in the region is also ∼ 12 m. Expand
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
TLDR
This work estimates ship strike mortality for blue humpback and fin whales in U.S. West Coast waters using a novel application of a naval encounter model, and recommends combining shipping lane modifications and re-locations, ship speed reductions and creation of 'Areas to be Avoided' by vessels in ecologically important locations to address this significant source of whale mortality. Expand
Seasonal distribution, movements and taxonomic status of blue whales (Balaenoptera musculus) in the northern Indian Ocean
There is a distinct population of blue whales, Balaenoptera musculus, in the northern Indian Ocean. The taxonomic status of these animals has long been uncertain, with debate over whether thisExpand
Spatial and Temporal Occurrence of Blue Whales off the U.S. West Coast, with Implications for Management
TLDR
This analysis showed how satellite-tagged blue whales seasonally used waters off the U.S. West Coast, including high-risk areas, are likely to change inter-annually, and suggests possible modifications to existing shipping lanes to reduce the likelihood of collisions with vessels. Expand
Anthropogenic Threats and Conservation Needs of Blue Whales, Balaenoptera musculus indica, around Sri Lanka
Blue whales in the Northern Indian Ocean are a morphologically and acoustically distinct population restricted to these waters. Off Sri Lanka a portion of the population concentrates near shore whereExpand
BLUE WHALE (Balaenoptera musculus musculus): Eastern North Pacific Stock
  • 2011
STOCK DEFINITION AND GEOGRAPHIC RANGE North Pacific blue whales were once thought to belong to as many as five separate populations (Reeves et al. 1998), but acoustic evidence suggests only twoExpand
Ecological correlates of blue whale movement behavior and its predictability in the California Current Ecosystem during the summer-fall feeding season
TLDR
It is shown that blue whale behavioral state in the CCE was predictable from environmental correlates and that ARS behavior was most prevalent in regions of known high whale density, likely reflecting where large prey aggregations consistently develop in summer-fall. Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 29 REFERENCES
BLUE WHALE (BALAENOPTERA MUSCULUS)DISTRIBUTION IN THE EASTERN TROPICAL PACIFIC
The distribution of blue whales, Balaenoptera musculus, in the eastern tropical Pacific (ETP) was analyzed from 211 sightings of 355 whales recorded during research vessel sighting surveys or byExpand
Mediterranean fin whales at risk from fatal ship strikes.
TLDR
The high likelihood of unreported fatal strikes combined with other anthropogenic threats suggests an urgent need for a comprehensive, basin-wide conservation strategy, including ship strike mitigation requirements, like real-time monitoring of whale presence and distribution to re-locate ferry routes to areas of lower cetACEan density, and reducing ship speed in high cetacean density areas. Expand
MOVEMENTS OF NORTH PACIFIC BLUE WHALES DURING THE FEEDING SEASON OFF SOUTHERN CALIFORNIA AND THEIR SOUTHERN FALL MIGRATION1
The satellite-acquired locations of 10 blue whales (Balaenoptera musculus) tagged off southern California with Argos radio tags were used to identify (1) their movements during the late summerExpand
Insights into the population structure of blue whales in the Eastern North Pacific from recent sightings and photographic identification
Blue whales were widely distributed in the North Pacific prior to the primary period of modern commercial whaling in the early 1900s. Despite concentrations of blue whale catches off British ColumbiaExpand
ABUNDANCE OF BLUE AND HUMPBACK WHALES IN THE EASTERN NORTH PACIFIC ESTIMATED BY CAPTURE‐RECAPTURE AND LINE‐TRANSECT METHODS
We estimated humpback and blue whale abundance from 1991 to 1997 off the west coast of the U.S. and Mexico comparing capture-recapture models based on photographically identified animals andExpand
COLLISIONS BETWEEN SHIPS AND WHALES
Although collisions with motorized ships are a recognized source of whale mortality, little has been done to compile information on the frequency of their occurrence or contributing factors. WeExpand
Cetacean strandings in Oregon and Washington between 1930 and 2002
The Northwest Region (NWR) Marine Mammal Stranding Network was created in the early 1980s to provide a consistent framework in which to collect and compile data about marine mammal strandings inExpand
Vessel collisions with whales: The probability of lethal injury based on vessel speed
TLDR
The results can be used to assess the utility of vessel speed limits that are being considered to reduce the lethality of vessels striking the critically endangered North Atlantic right whale and other large whales that are frequent victims of vessel strikes. Expand
Biogeographic characterization of blue whale song worldwide: Using song to identify populations
Blue whale songs provide a measure for characterising worldwide blue whale population structure. These songs are divided into nine regional types, which maintain a stable character. Five of the nineExpand
Recovery Plan for The Blue Whale ( Balaenoptera musculus )
TLDR
This Plan was written at the request of the Assistant Administrator for Fisheries to promote the conservation of blue whales and can be achieved only if a long-term commitment is made to support the actions recommended here. Expand
...
1
2
3
...