Sixty desert tortoises, each equipped with a radio transmitter and trailing a small antenna, were released Sept. 21 at the southern end of the Nevada National Security Site, 60 miles northwest of Las Vegas.<\/p>\n
Researchers plan to track the critters over the next year as part of a $100,000 study ultimately aimed at increasing the animal\u2019s numbers in the wild.<\/p>\n
Of course, that phrase \u201cin the wild\u201d is vital in reconciling the notion of a \u201cthreatened\u201d species with the fact that there are so many desert tortoises in Clark County that government agents have taken to euthanizing them.<\/p>\n
Researchers admit that — more than two decades after they first labeled the species \u201cthreatened\u201d — they still have no \u201cbaseline\u201d population figure, no idea how many \u201cwild\u201d Mojave Desert tortoises there used to be, how many there are, or how many there ought to be.<\/p>\n
So when will they be able to tell us whether we have enough new tortoises, bred in their joyously cattle-free \u201cconservation center,\u201d to de-list the species and allow humans in these parts to get back to developing our land as we see fit?<\/p>\n
Or is the tortoise merely a cat\u2019s paw, its unmeasurable and thus endless ongoing \u201cpreservation\u201d intended precisely to make sure neither large-scale development nor ranching can ever resume?<\/p>\n
Government biologists assume tortoise numbers \u201cin the wild\u201d are on the decline, based on their theory that the primary threats are \u201chabitat destruction\u201d and disease — even though population densities reveal the favored habitat of the tortoise is arguably the suburban golf course, and the main cause of disease in the animals seems to consist of being rounded up and placed in overcrowded government pens.<\/p>\n
As of a few years ago, officials had rounded up more than 10,000 of the little reptiles, right here in the Vegas Valley, turning them over to the Desert Tortoise Conservation Center, a research and recovery facility the San Diego Zoo operates at the southwestern edge of the Las Vegas Valley under a partnership with the Fish and Wildlife Service.<\/p>\n
Of those, Marci Henson of the county\u2019s Desert Conservation Program estimated about 2 percent of the poor little \u201cthreatened\u201d reptiles get \u201ceuthanized\u201d after developing respiratory problems.<\/p>\n
(\u201cRun, little tortoises, run!\u201d as former County Commissioner Don Schlesinger once put it.)<\/p>\n
Ignoring the urban populations in order to call the tortoise \u201cthreatened\u201d is like saying pigeons and house cats are \u201cthreatened\u201d in Las Vegas because they seem to prosper best only in the urban and suburban environments created by mankind (which is \u201cunnatural\u201d and thus \u201cdoesn\u2019t count,\u201d) while faring less well amongst the coyotes of the deep desert.<\/p>\n
\u2018AT SATURATION LEVELS\u2019<\/p>\n
Back in the 1990s, native Las Vegan Harry Pappas was appointed to the Bureau of Land Management Citizen Advisory Council by then-Congresswoman Barbara Vucanovich. He later represented the State Rifle & Pistol Association on the Clark County Tortoise Advisory Council.<\/p>\n
\u201cThey said the (desert) tortoise was threatened, so they had to fence off these huge areas and shut out all the cattle, which means no one is out there shooting the coyotes and the raven or trapping the lions any more, so of course that wrecked the hunting,\u201d Mr. Pappas recalled, back in 2001. \u201cThey said anyone who found a tortoise had to turn it in\u201d to Clark County authorities.<\/p>\n
\u201cSo what happened? They got so overrun with tortoises being turned in that they told us they were going to have to start euthanizing them. I said \u2018Hold on a minute, here. Euthanize them? Why don\u2019t you just drop them out in the desert?\u2019 They said \u2018Oh no, they\u2019ll fight with the native tortoises that already live out there and they\u2019ll kill each other, because all these lands are already at saturation levels.\u2019 I said, \u2018Wait a minute, now: Which is it? How can they be \u2018threatened,\u2019 or \u2018endangered\u2019 \u2026 but now you tell us all these lands are at \u2018saturation levels\u2019 for tortoises?\u201d<\/p>\n
Mr. Pappas recalled a wildlife biologist from California who, more than a decade ago, spoke before the BLM\u2019s Citizen Advisory Council, bringing in \u201ctwo huge plastic garbage bags full of baby tortoise shells — there had to be hundreds of them, probably thousands. Every one of these shells had a hole pecked through the top where the ravens had carried them off and pecked through the shell and eaten the baby tortoise right out of the shell, and he said they picked these up in middens around the raven nests, just thousands of them.\u201d<\/p>\n
Cattle weren\u2019t the problem, Harry has always insisted. In fact, cattlemen formerly reduced the populations of predators including the coyote and the raven, which benefited tortoise populations.<\/p>\n
\u201cBut now they say the way to protect the tortoise is to fence off the land and not let the ranchers and the hunters in, when the biggest tortoise populations we ever had were in the \u201950s and \u201960s, when you had plenty of ranching, and plenty of hunting, and plenty of predator control,\u201d Harry insists.<\/p>\n
\u2018UNLIMITED BREEDING\u2019 BAD<\/p>\n
Cliven Bundy, the last cattle rancher in Clark County, reports that when the Kern River pipeline people came through and did a federally mandated tortoise population density study as part of their required Environmental Impact Statement, they found several times more tortoises per acre on the lands where the Bundys have water lines and tanks for their cattle than they found in the hot, dry desert — and literally 10 times the tortoise population density — the highest densities recorded — right here in the Las Vegas valley.<\/p>\n
This isn\u2019t even counterintuitive. Early explorers found precious few tortoises in the dry Mojave desert. The Spaniards found only shells and thought them extinct.<\/p>\n
In the 1920s and \u201930s, tortoise populations swelled to artificially high numbers as ranchers ran cattle on these lands, meantime killing off the tortoises\u2019 main predators, the coyote and the raven.<\/p>\n
As \u201cenvironmentalists\u201d have succeeded in running the ranchers off the land, the cattle have vanished along with their water tanks, no one is any longer shooting coyotes and ravens, and thus tortoise populations have slumped back to historically normal levels.<\/p>\n
Do these government agents even want to see the species recover?<\/p>\n
Marci Henson, of the county\u2019s Desert Conservation Program, has warned \u201cUnlimited breeding of an endangered species in captivity is something the community has to look into.\u201d<\/p>\n
To stop it?<\/p>\n
\u201cYes,\u201d Ms. Henson confirmed.<\/p>\n
A similar but larger program than last week\u2019s release — the relocation of 770 desert tortoises from Fort Irwin into the open desert in California — was suspended in 2008 after 90 percent of the transplants were promptly devoured by predators.<\/p>\n
Until Friday, all of the tortoises released into the bleak Test Site landscape Friday lived at the Desert Tortoise Conservation Center. Some grew up as backyard pets. Their experience at foraging for food and evading coyotes and other predators is presumably minimal.<\/p>\n
One wonders how the scientists would respond if the tortoises — Lassie-like — promptly turned south and began relentlessly plodding their way back to the beckoning green lawns of Las Vegas.<\/p>\n","protected":false},"excerpt":{"rendered":"
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