Posts tagged Wildlife Service
Another “sneak attack” on wildlife from GOP
Feb 3rd
Disguised as “Sportsmen’s Heritage Act, ”Legislation Would Also Roll Back Public-lands Protection, Promote Polar Bear Trophy Hunting
WASHINGTON— The U.S. House of Representatives will vote Tuesday on H.R. 3590, the misnamed “Sportsmen’s Heritage and Recreational Enhancement Act.” Under the guise of expanding hunting and fishing access on public lands, the Republican-supported bill aims to prevent the Environmental Protection Agency from protecting millions of birds and other animals from lead poisoning. The extremist legislation also contains provisions to undermine the Wilderness Act, dispense with environmental review for projects on national wildlife refuges, and promote polar bear hunting.
Lead poisoning from shotgun pellets still effects wildlife. Two years ago, a golden eagle that had nested in the Flatirons for several tears was found lead-poisoned on the NOAA/NIST grounds.
“Another cynical assault by House Republicans to roll back protections for public lands and wildlife,” said Bill Snape, senior counsel at the Center for Biological Diversity. “This supposed ‘sportsmen’s legislation’ would actually jeopardize the health of hunters, promote needless lead poisoning of our wildlife, and prevent hunters, anglers and other members of the public from weighing in on decisions about how to manage 150 million acres of federal land and water.”
H.R. 3590 seeks to exempt toxic lead in ammunition and fishing equipment from regulation under the Toxic Substances Control Act, the federal law that regulates toxic substances. The EPA is currently allowed to regulate or ban any chemical substance for a particular use, including the lead used in shot and bullets. Affordable, effective nontoxic alternatives exist for lead ammunition and lead sinkers for all hunting and fishing activities.
Spent lead from hunting is a widespread killer of more than 75 species of birds such as bald eagles, endangered condors, loons and swans, and nearly 50 mammals. More than 265 organizations in 40 states have been pressuring the EPA to enact federal rules requiring use of nontoxic bullets and shot for hunting and shooting sports.
“There are powerful reasons we banned toxic lead from gasoline, plumbing and paint — lead is a known neurotoxin that endangers the health of hunters and their families and painfully kills bald eagles and other wildlife,” said Snape.
H.R. 3590 would also exempt all national wildlife refuge management decisions from review and public disclosure under the National Environmental Policy Act and allow the import of polar bear “trophies” from Canada. The Republican-controlled House approved similar “Sportsmen’s Act” legislation in 2012 by a vote of 274-146, but the bill was stopped in the Senate.
Background
Despite being banned in 1992 for hunting waterfowl, spent lead shotgun pellets from other hunting uses continue to be frequently ingested by waterfowl. Many birds also consume lead-based fishing tackle lost in lakes and rivers, often with deadly consequences. Birds and animals are also poisoned when scavenging on carcasses containing lead-bullet fragments. More than 500 scientific papers have documented the dangers to wildlife from lead exposure. The U.S. Fish and Wildlife Service calculates that more than 14,000 tons of toxic lead shot is deposited in the environment each year in the United States by upland bird hunting alone.
Lead ammunition leaves fragments and numerous imperceptible, dust-sized particles that contaminate game meat far from a bullet track, causing significant health risks to people eating wild game. Recent scientific studies show that hunters have higher lead levels in their bloodstream, and more associated health problems, than the public at large. Some state health agencies have recalled venison donated to feed the hungry because of dangerous lead contamination from bullet fragments.
There are many alternatives to lead rifle bullets and shotgun pellets. More than a dozen manufacturers market hundreds of varieties and calibers of nonlead bullets and shot made of steel, copper and alloys of other metals, with satisfactory-to-superior ballistics. A recent study debunks claims that price and availability of nonlead ammunition could preclude switching to nontoxic rounds for hunting. Researchers found no major difference in the retail price of equivalent lead-free and lead-core ammunition for most popular calibers.
Hunters in areas with lead ammunition restrictions have transitioned to hunting with nontoxic bullets. There has been no decrease in game tags or hunting activity since state requirements for nonlead hunting went into effect in significant portions of Southern California in 2008 to protect condors from lead poisoning. California recently passed legislation to transition to lead-free hunting statewide by 2019.
Learn more about the Center’s Get the Lead Out campaign.
Leading quantitative conservation biologist named CU’s first Colorado Chair in Environmental Studies
Oct 1st
The University of Colorado Boulder has hired its first Colorado Chair in Environmental Studies, an endowed chair awarded to Daniel Doak, a conservation biologist known for his quantitative analysis of how different government policies could affect the populations of species ranging from sea otters, California condors, corals and rare plants.
The endowed chair in environmental studies was made possible by $4 million in gifts made anonymously in 2009 and 2010 toward the chair.
Dr. Daniel Doak
Sharon Collinge, professor and director of the CU-Boulder Environmental Studies Program, called Doak a perfect match. “He epitomizes what we’re looking for,” she said.
Doak is especially skilled in interdisciplinary research, she said. He brings expertise in policy to his analyses of risks of energy development, for example. And he is widely cited for his research in quantitative conservation biology, which combines sophisticated computer modeling with varying policy scenarios to project changes in populations of rare species.
For instance, the Proceedings of the National Academies of Science recently published a study co-authored by Doak concluding that the California condor is chronically endangered by lead exposure from hunters’ spent ammunition.
While the free-flying condor population has risen in the last three decades, that increase has been achieved through captive breeding, monitoring and veterinary care, the study found. Meanwhile, the primary threat to the endangered bird — lead poisoning from bullets and shotgun shells lodged in carrion — has gone largely unmitigated, the study said.
Doak and his fellow researchers found no evidence that California’s 2008 partial ban on lead ammunition yielded any decrease in lead exposure and poisoning in condors.
Since 2007, Doak has served as a professor of zoology and physiology at the University of Wyoming. Previously, he was a faculty member at the University of California, Santa Cruz. His research has been funded by the National Science Foundation, U.S. Fish and Wildlife Service, U.S. Forest Service, California Department of Fish and Game and the U.S. Bureau of Land Management. Scholarly papers have cited his work more than 3,000 times since 1998.
Doak said he was drawn to CU-Boulder’s Environmental Studies Program because of its breadth, spanning disciplines ranging from biogeochemistry to political science to philosophy. This interdisciplinary focus is necessary to confront some of the world’s most intractable problems, Doak and Collinge said.
“That’s the only way we can really address and resolve some of the major environmental challenges that we face,” Collinge said.
Working with experts from a wide range of disciplines, Doak added, provides a motivation and opportunity “not once a year but every day to confront your own ignorance and thus to appreciate and learn new ideas and approaches.”
It is not that interdisciplinary work is always best, he added. “We need to train ourselves and our students to determine when the problem we are confronting requires an interdisciplinary approach. If you want to build a bridge that won’t fall down, you don’t need an interdisciplinary team. You need a good engineer.”
The critical question, he said, is the following: “Is this problem a nail that requires a hammer, or is this a problem that requires a lot of tools? And most environmental problems require an entire chest of tools and the different people who know how to use them.”
Collinge said students sometimes grasp this distinction better than professors do. “Students who are interested in the environment understand very deeply that they have to know something about politics and policies and how we make choices and why we make choices,” she said. “They’ve essentially pushed us, encouraged us to provide that broad and deep training for them.”
Of the donor’s gift, Collinge said, “This was incredibly generous. And we are really grateful.
“For me, it validates or speaks to the importance of what we’re doing,” she said. “With more than 1,000 undergraduate majors in environmental studies and 50 graduate students, enthusiasm was abundant even before the gift that enabled the endowed chair.”
New CU-Boulder study clarifies diversity, distribution of cutthroat trout in Colorado
Sep 24th
Will the real greenback cutthroat trout please stand up?
A novel genetic study led by the University of Colorado Boulder has helped to clarify the native diversity and distribution of cutthroat trout in Colorado, including the past and present haunts of the federally endangered greenback cutthroat trout.
The study, led by CU-Boulder postdoctoral researcher Jessica Metcalf, was based largely on DNA samples taken from cutthroat trout specimens preserved in ethanol in several U.S. museums around the country that were collected from around the state as far back as 150 years ago. The new study, in which Metcalf and her colleagues extracted mitochondrial DNA from fish to sequence genes of the individual specimens and compared them with modern-day cutthroat trout strains, produced some startling results.
The biggest surprise, said Metcalf, was that the cutthroat trout native to the South Platte River drainage appears to survive today only in a single population outside of its native range — in a small stream known as Bear Creek that actually is in the nearby Arkansas River drainage. The strain from Bear Creek is thought to have been collected from the South Platte River drainage in the 1880s by an early hotelier who stocked the fish in a pond at the Bear Creek headwaters to help promote an early tourist route up Pikes Peak.
“We thought one way to get to the question of which cutthroat trout strains are native to particular drainages was to go back to historical samples and use their DNA as a baseline of information,” said Metcalf of the chemistry and biochemistry department and a former postdoctoral researcher at the Australian Centre for Ancient DNA. “Our study indicates the descendants of the fish that were stocked into Bear Creek in the late 1800s are the last remaining representatives of the federally protected greenback cutthroat trout.”
A second, key set of data was all of the Colorado cutthroat trout stocking records over the past 150 years, a task spearheaded by study co-author and fish biologist Chris Kennedy of the U.S. Fish and Wildlife Service. Between 1889 and 1925, for example, the study showed that more than 50 million cutthroat trout from the Gunnison and Yampa river basins were stocked in tributaries of all major drainages in the state, jumbling the picture of native cutthroat strains in Colorado through time and space.
Originating from the Pacific Ocean, cutthroat trout are considered one of the most diverse fish species in North America and evolved into 14 recognized subspecies in western U.S. drainages over thousands of years. In Colorado, four lineages of cutthroats were previously identified: the greenback cutthroat, the Colorado River cutthroat, the Rio Grande cutthroat and the extinct yellowfin cutthroat.
The museum specimens used in the study came from the California Academy of Sciences, the Smithsonian Museum of Natural History in Washington, D.C., the Academy of Natural Sciences in Philadelphia and the Harvard University Museum of Comparative Zoology. Colorado cutthroat trout specimens were collected by a number of early naturalists, including Swiss scientist and former Harvard Professor Louis Agassiz and internationally known fish expert and founding Stanford University President David Starr Jordan.
The new study, published online today in Molecular Ecology, follows up on a 2007 study by Metcalf and her team that indicated there were several places on the Front Range where cutthroat populations thought to be greenbacks by fish biologists were actually a strain of cutthroats transplanted from Colorado’s Western Slope in the early 1900s.
CU graduate researcher, Sierra Stowell (pictured here as a teenager) was a co-author of the study. She spends a lot of time in or near the water where cutthroat trout live.
Other co-authors on the new study included CU-Boulder Professor Andrew Martin and CU-Boulder graduate students Sierra Stowell, Daniel McDonald and Kyle Keepers; Colorado Parks and Wildlife biologist Kevin Rogers; University of Adelaide scientists Alan Cooper and Jeremy Austin; and Janet Epp of Pisces Molecular LLC of Boulder.
“With the insight afforded by the historical data, we now know with a great deal of certainty what cutthroat trout strains were here in Colorado before greenbacks declined in the early 20th century,” said Martin of CU’s ecology and evolutionary biology department. “And we finally know what a greenback cutthroat trout really is.”
Metcalf and her colleagues first collected multiple samples of tissue and bone from each of the ethanol-pickled trout specimens, obtaining fragments of DNA that were amplified and then pieced together like a high-tech jigsaw puzzle to reveal two genes of the individual specimens. The tests were conducted on two different continents under highly sterile conditions and each DNA sequencing effort was repeated several times for many specimens to ensure accuracy in the study, Metcalf said.
Roughly half of the study was conducted at CU-Boulder and half at the Australian Center for Ancient DNA at the University of Adelaide, where Metcalf had worked for two years. “By conducting repeatable research at two very different, state-of-the-art laboratories, we were able to show the Bear Creek trout was the same strain as the cutthroats originally occupying the South Platte River drainage.”
The Bear Creek trout strain is now being propagated in the Colorado Parks and Wildlife hatchery system and at the USFWS Leadville National Fish Hatchery.
In addition to identifying the Bear Creek cutthroat trout, Metcalf and her colleagues discovered a previously unknown cutthroat strain native to the San Juan Basin in southwestern Colorado that has since gone extinct. The study also confirmed that the yellowfin cutthroat, a subspecies from the Arkansas River headwaters that grew to prodigious size in Twin Lakes near Leadville, also had gone extinct.
Fortunately, most fish preserved by naturalists before 1900 were “fixed” in ethanol, which makes it easier for researchers to obtain reliable DNA than from fish preserved in a formaldehyde solution, a practice that later became popular. Prior to the new study — which included DNA from specimens up to about 150 years old — scientists working in ancient DNA labs had only performed similar research on ethanol-preserved museum vertebrate specimens less than 100 years old.
“One of the exciting things to come from this research project is that it opens up the potential for scientists to sequence the genes of other fish, reptiles and amphibian specimens preserved in ethanol further back in time than ever before to answer ecological questions about past diversity and distribution,” said Metcalf, who conducts her research at CU’s BioFrontiers Institute.
Funding for the study was provided by agencies of the Greenback Cutthroat Trout Recovery Team, including the USFWS, the U.S. Forest Service, the Bureau of Land Management, the National Park Service and Trout Unlimited.
“I think in many cases success depends less on the application of a new technology and more on the convergence of people with shared interest and complementary skills necessary for solving difficult problems,” said Martin. “Our greenback story is really one about what can be discovered when dedicated and talented people collaborate with a shared purpose.”
“We’ve known for some time that the trout in Bear Creek were unique,” said Doug Krieger, senior aquatic biologist for Colorado Parks and Wildlife and the Greenback Cutthroat Trout Recovery Team leader. “But we didn’t realize they were the only surviving greenback population.”
The decline of native cutthroats in Colorado occurred because of a combination of pollution, overfishing and stocking of native and non-native species of trout, said Metcalf. “It’s ironic that stocking nearly drove the greenback cutthroat trout to extinction, and a particularly early stocking event actually saved it from extinction,” she said.
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