06-15-2005, 02:50 PM
Looks like I was able to answer my own request from the other day:
Wednesday, June 15, 2005 - 12:00 AM [url "http://www.harktheherald.com/print.php?sid=57413"]
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Federal biologists counting carp in Utah Lake
Caleb Warnock DAILY HERALD
Getting rid of carp in Utah Lake begins with finding out how many there are.
Federal biologists have been netting thousands of carp in Utah Lake for the past week, hoping to get enough statistical data about their numbers to form an estimate of the lakewide population. [url "http://heraldextra.com/modules.php?op=modload&name=display_ads&file=index&func=display_ad&ad=00266821"][/url]
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It is the second year carp here have been counted by scientists, said Reed Harris of the June Sucker Recovery Program. A similar study last year showed their could be 7.5 million carp in the lake, but more information was needed.
"We've been doing some intense studies to determine the population in the lake," he said. "We're trying to develop a model of how many we might have to take out each year in order to get rid of carp in Utah Lake."
The sampling could prove that carp are so numerous that it would be physically impossible to rid the lake of them, he said. Or it could show that scientists would need to remove a certain number of the fish a year for a certain number of years.
There is already a privately owned fishing company that has been harvesting carp in the lake for decades to sell to pet food manufacturers and others. Despite that harvest, carp numbers continue to increase.
Until carp are removed from the lake, June sucker, one of the world's most endangered fish, and native only to Utah Lake, is unlikely to make a recovery, Harris said.
If all of the fish in Utah Lake were weighed together, 90 percent of that weight would be carp, he said.
"Not only are they competitive with all the other fish species, but they destroy any plants that used to be in the lake," he said. "They stir up the bottom, they make the lake more turbid, they make the environment suitable basically to only themselves, so other fish can't live there."
If the study shows carp are too numerous to be removed by netting them over several years, experts could try diking and draining portions of the lake or even poisoning the fish, but those would be last resorts, he said.
Restoring Utah Lake's ecosystem to where June sucker thrive again would also benefit other species and people who use the lake, he said.
Experts would like to start removing carp from Utah Lake as early as next year. The effort could cost tens of millions of dollars.
"This is about trying to make Utah Lake a better place not just for June sucker but also for people," he said.
In the 1800s, Utah Lake was home to at least six native species of fish.
Today, the June sucker and the Utah sucker are the only two remaining.
The June sucker occurs naturally nowhere else in the world. After a decade of study, experts believe there are as few as 300 adult wild June suckers left.
In 1986, the federal government named the June sucker an endangered species, allowing its habitat to be protected by law. Soon thereafter, nine water-user and wildlife groups with interest in Deer Creek Reservoir formed a 40-year, $40 million plan to save the fish, called the June Sucker Recovery Implementation Program.
[i] Caleb Warnock can be reached at 756-7669 ext. 19 or cwarnock@heraldextra.com.[/i]This story appeared in The Daily Herald on page D1.
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Federal biologists counting carp in Utah Lake
Caleb Warnock DAILY HERALD
Getting rid of carp in Utah Lake begins with finding out how many there are.
Federal biologists have been netting thousands of carp in Utah Lake for the past week, hoping to get enough statistical data about their numbers to form an estimate of the lakewide population. [url "http://heraldextra.com/modules.php?op=modload&name=display_ads&file=index&func=display_ad&ad=00266821"][/url]
It is the second year carp here have been counted by scientists, said Reed Harris of the June Sucker Recovery Program. A similar study last year showed their could be 7.5 million carp in the lake, but more information was needed.
"We've been doing some intense studies to determine the population in the lake," he said. "We're trying to develop a model of how many we might have to take out each year in order to get rid of carp in Utah Lake."
The sampling could prove that carp are so numerous that it would be physically impossible to rid the lake of them, he said. Or it could show that scientists would need to remove a certain number of the fish a year for a certain number of years.
There is already a privately owned fishing company that has been harvesting carp in the lake for decades to sell to pet food manufacturers and others. Despite that harvest, carp numbers continue to increase.
Until carp are removed from the lake, June sucker, one of the world's most endangered fish, and native only to Utah Lake, is unlikely to make a recovery, Harris said.
If all of the fish in Utah Lake were weighed together, 90 percent of that weight would be carp, he said.
"Not only are they competitive with all the other fish species, but they destroy any plants that used to be in the lake," he said. "They stir up the bottom, they make the lake more turbid, they make the environment suitable basically to only themselves, so other fish can't live there."
If the study shows carp are too numerous to be removed by netting them over several years, experts could try diking and draining portions of the lake or even poisoning the fish, but those would be last resorts, he said.
Restoring Utah Lake's ecosystem to where June sucker thrive again would also benefit other species and people who use the lake, he said.
Experts would like to start removing carp from Utah Lake as early as next year. The effort could cost tens of millions of dollars.
"This is about trying to make Utah Lake a better place not just for June sucker but also for people," he said.
In the 1800s, Utah Lake was home to at least six native species of fish.
Today, the June sucker and the Utah sucker are the only two remaining.
The June sucker occurs naturally nowhere else in the world. After a decade of study, experts believe there are as few as 300 adult wild June suckers left.
In 1986, the federal government named the June sucker an endangered species, allowing its habitat to be protected by law. Soon thereafter, nine water-user and wildlife groups with interest in Deer Creek Reservoir formed a 40-year, $40 million plan to save the fish, called the June Sucker Recovery Implementation Program.
[i] Caleb Warnock can be reached at 756-7669 ext. 19 or cwarnock@heraldextra.com.[/i]This story appeared in The Daily Herald on page D1.
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