Orca population makes comeback from disaster
Source: Agencies |
January 11, 2010, Monday
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A LITTLE over a year after researchers feared a drop in the northwest United State's endangered killer whale population meant disaster, the number of orcas has bounced back with six new babies and no whales lost.
Though scientific evidence is skimpy, some whale experts say the good news might be the result of enough salmon for the majestic black-and-white mammals to eat. Others say so little is known about orcas that the baby boom could be due to any number of factors - or simply a statistical fluke.
Regardless, they're overjoyed about the new arrivals.
"We're all very happy to see so many births," said Susan Berta of the Whidbey Island-based Orca Network.
"We're all hoping that they find lots of fish to keep them healthy and keep the mothers in good condition so they can feed the calves," she said.
The Center for Whale Research says that in 2008, eight orcas in the three pods, J, K and L, that make up the southern resident population in Washington and southwest British Columbia went missing and were presumed dead, including two females of reproductive age and the 98-year-old matriarch of K Pod. With just one surviving birth that year, the total in the three pods as of December 2008 dropped to 82.
That alarmed researchers - "This is a disaster," Ken Balcomb, a senior scientist at the San Juan Island-based center, said in October 2008.
But in 2009, no deaths were reported and five new calves were spotted, giving a December total of 87. A sixth infant was born January 3 while its family, J Pod, was near Seattle on a winter visit, making it 88.
Some experts believe that the increase in orcas is due to stable chinook salmon supplies - their staple food - in the past two years.
Though scientific evidence is skimpy, some whale experts say the good news might be the result of enough salmon for the majestic black-and-white mammals to eat. Others say so little is known about orcas that the baby boom could be due to any number of factors - or simply a statistical fluke.
Regardless, they're overjoyed about the new arrivals.
"We're all very happy to see so many births," said Susan Berta of the Whidbey Island-based Orca Network.
"We're all hoping that they find lots of fish to keep them healthy and keep the mothers in good condition so they can feed the calves," she said.
The Center for Whale Research says that in 2008, eight orcas in the three pods, J, K and L, that make up the southern resident population in Washington and southwest British Columbia went missing and were presumed dead, including two females of reproductive age and the 98-year-old matriarch of K Pod. With just one surviving birth that year, the total in the three pods as of December 2008 dropped to 82.
That alarmed researchers - "This is a disaster," Ken Balcomb, a senior scientist at the San Juan Island-based center, said in October 2008.
But in 2009, no deaths were reported and five new calves were spotted, giving a December total of 87. A sixth infant was born January 3 while its family, J Pod, was near Seattle on a winter visit, making it 88.
Some experts believe that the increase in orcas is due to stable chinook salmon supplies - their staple food - in the past two years.
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