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Grizzly bears, black bears, wolves, coyotes, cougars/ mountain lions,bobcats, wolverines, lynx, foxes, fishers and martens are the suite of carnivores that originally inhabited North America after the Pleistocene extinctions. This site invites research, commentary, point/counterpoint on that suite of native animals (predator and prey) that inhabited The Americas circa 1500-at the initial point of European exploration and subsequent colonization. Landscape ecology, journal accounts of explorers and frontiersmen, genetic evaluations of museum animals, peer reviewed 20th and 21st century research on various aspects of our "Wild America" as well as subjective commentary from expert and layman alike. All of the above being revealed and discussed with the underlying goal of one day seeing our Continent rewilded.....Where big enough swaths of open space exist with connective corridors to other large forest, meadow, mountain, valley, prairie, desert and chaparral wildlands.....Thereby enabling all of our historic fauna, including man, to live in a sustainable and healthy environment. - Blogger Rick

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Thursday, September 6, 2012

At the border of the San Fernando and Conejo Valleys(suburban northwestern Los Angeles), Bobcats are under siege!..........Biologist Seth Riley started to document the first cases of notoedric mange in Southern California Bobcats back in 2002, a contagious parasitic skin disease that often kills "Bobs"............In fact, half of the Bobcats that UCLA researcher Laurel Serieys has radio tagged during her 6 year study have perished due to this debilitating disease.................And yes, blog readers, we are the cause of this crash through the use of rodenticides that we use to kill mice, rats and other rodents that plague us.........“Bobcats that are exposed to rat poisons are more than nine times likely to die from mange than other causes of death,” Seriey.saids....... “What is it about rat poison that makes the bobcats more susceptible to the disease?"..... "That’s what I’m trying to figure out.”

UCLA grad student rallies on behalf of wild bobcats
By Stephanie Sumell;

EXPLOREA 2011 photo by wildlife photographer Barry Rowan shows a family of bobcats investigating a fallen tree. Many of Rowans photos are being sold to help fund Laurel Serieys research efforts. 
Courtesy of Barry Rowan Collection A doctorate student at UCLA is asking Ventura County homeowners to think twice before using rat poison.
Laurel Serieys is in the midst of a six-year research project that’s revealing how the toxic substance is affecting the area’s already dwindling bobcat population.
Since 2006, the 32-year-old has caught and released roughly 60 of the furry felines—many in the Santa Monica Mountains—as part of a study to determine the effect urban development is having on the health of the animals, which now number around 300 in the Greater Los Angeles area.
“It’s cumbersome, time-intensive and requires a lot of patience,” said Serieys, who is pursuing a doctorate degree in ecology and evolutionary biology. “I’ve caught foxes, raccoons, coyotes, predatory birds, possums, domestic cats, skunks. . . . It’s super exciting when I actually catch a bobcat.”
Part of her research focuses on the use of rat poison, which, when ingested by the large cats, increases their susceptibility to notoedric mange, a highly contagious, parasitic skin disease that can eventually lead to death.
When homeowners use rat poison to exterminate rodents, the carnivorous bobcats—who eat those rodents—pay the price.
“Bobcats that are exposed to rat poisons are more than nine times likely to die from mange than other causes of death,” Serieys said. “What is it about rat poison that makes the bobcats more susceptible to the disease? That’s what I’m trying to figure out.”
The researcher has seen the effects of mange firsthand.

Los Angeles area Bobcat with mange(notice the head and front legs and upper back stipped of fur

She said her findings are clear.
“(Notoedric mange) is causing the population to decline,” Serieys said. “And it’s not just affecting bobcats. It’s affecting wildlife across California.”

Since 1996, the National Park Service has been studying bobcats in the Santa Monica Mountains, focusing specifically on the T.O. and Agoura Hills regions.

“Mange has caused a significant population decline in that area,” Serieys said. “From 2001 to 2006, more than 50 percent of radiocollared bobcats died of mange in Thousand Oaks.”
On her website,, Serieys urges homeowners to practice poisonfree, environmentally friendly extermination methods. The best way to control pests, she advises, is to encourage natural predators like owls.

“Nesting boxes and perches . . . can be installed around your home,” Serieys said.
Homeowners can also take preventive measures. “Rodentproof your home. Cover up holes. Remove unnecessary vegetation and trash in your yard that could be homes for small mammals.
If ground squirrels are a problem, remove food and water sources such as bird feeders and baths.”
If none of that works?

“Try mechanical traps,” she said. “Wooden snap traps and electric zappers are good for inhome use.”
And for those pesky rodents that just won’t quit? “I encourage people to contact pest control companies that use integrated pest management practices (where) poisons are used only as the very last resort. . . . Let them decide if it’s necessary,” she said.

Serieys has joined forces with the National Park Service as well as wildlife photographer Barry Rowan to bring awareness to the bobcats’ plight.“My biggest hope is that people realize these animals are out there . . . (and) they’re worth saving,” said Rowan, who holds a master’s degree in biology.

The 36-year-old, who became interested in the animals about six years ago when he witnessed a bobcat during a bird-watching excursion, now sells his photos to support Serieys’ research.
“Having been in grad school, I know how good of a feeling it is when people support (your) research,” said the photographer, whose work ranges in price from $100 to $300. “I wanted to help.”
Four months ago, Serieys collected a dead bobcat from the backyard of Beverly Hills resident Susan Gottlieb, the owner of the G2 Gallery in Venice.

She offered to host a show of Rowan’s work.The exhibit, which features 32 photos, opened Aug. 11 and runs through Sept. 14.“(Serieys’) work will not only benefit bobcats but other wildlife as well,” said Gottlieb, who called Rowan’s work “exquisite.”“The cats are just amazing to look at.”
Serieys plans to finish her dissertation early next year.

Until then, the cat lover will continue her research and her efforts to educate homeowners about the serious collateral damage caused by rat poison.“The accumulation of information will change laws,” she said.

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