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Dear EarthTalk: How are the world's reptile species faring in terms of population numbers and endangered status? What's being done, if anything, to help them? -- Vicky Desmond, Troy, NY

The world’s reptiles—turtles, snakes, lizards, alligators and crocodiles—are indeed in trouble. The International Union for Conservation of Nature, which publishes an annual global roster of threatened and endangered species called the Red List, considers some 664 species of reptiles—representing more than 20 percent of known reptile species worldwide—as endangered or facing extinction. Meanwhile, the U.S. Fish & Wildlife Service considers about 10 percent of American reptiles threatened or endangered.

EarthTalkEndangeredReptiles

The International Union for Conservation of Nature considers
some 664 species of reptiles, including turtles, snakes, lizards,
alligators and crocodiles, as endangered or facing extinction.
Pictured: A freshwater turtle destined for the pet trade.
Credit: iStockPhoto

Why care? The non-profit Center for Biological Diversity (CBD) considers reptiles “amazing creatures” with clever adaptations that have helped them survive for millions of years. CBD also points out that reptiles are valuable indicators of wider ecological health. “Because many reptile species are long-lived and relatively slow-moving, they suffer from disturbances like habitat loss or pollution for extended periods,” the group reports, adding that a diverse community of reptiles living in a given area is evidence of a healthy ecosystem that can support the plant and animal life they and other species need for food and cover.

So what’s causing the reptiles’ decline? “While habitat loss is the most obvious cause of endangerment, declines are even even occurring in pristine areas from threats such as disease, UV radiation and climate change,” reports CBD. Overcollecting and unregulated hunting also are taking a toll on reptile populations.

In order to help stem the tide of reptile loss, CBD leverages the court system to pressure the federal government to protect at-risk species. For instance, back in 2004 the group worked with the Coalition for Sonoran Desert Protection in filing a petition to add the Tucson shovel-nosed snake, which dwells in the quickly disappearing wild desert around fast-growing cities like Tucson and Phoenix, to the federal list of endangered species. Finally in 2011 the federal government agreed that it would add the snake to its list of endangered species which will help it get the habitat protection needed to ensure long term survival.

CBD also works on other fronts for reptiles. The group’s campaign to outlaw “rattlesnake round-ups”—contests whereby hunters collect and kill as many snakes as they can in a year—has helped stem population declines of eastern diamondback rattlesnakes. And CBD’s efforts to educate the public about the plight of freshwater turtles, which are “overcollected” for food and the pet trade in the southern and midwestern parts of the U.S., helped convince several states for the first time to regulate turtle harvests.

One way everyone can help reptile species in decline is to make our backyards friendly to them. The U.S. Geological Survey’s Patuxent Wildlife Research Center offers tips on what to plant and how to arrange a landscape to encourage reptiles and other wildlife. Landowners that take these steps may be rewarded with fewer pests, given reptiles taste for large numbers of mosquitoes and other insects as well as small rodents. Other pro-reptile tips include driving carefully (road mortality is a big issue for snakes, turtles and other species) and keeping outside areas around your property free of garbage that might attract raccoons, crows and other pests that also prey on reptiles.

CONTACTS: CBD, www.biologicaldiversity.org; Patuxent Wildlife Research Center, www.pwrc.usgs.gov.

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Dear EarthTalk: What’s the deal with New York City buildings switching over from heating oil to natural gas? Is this a trend in other U.S. cities as well?  -- Mitchell Branecke, Yonkers, NY

Anyone who has lived in New York City knows that particulate matter is omnipresent there. Commonly referred to as soot, such particulate pollution is comprised of fine black particles derived of carbon from coal, oil, wood or other fuels that have not combusted completely.

EarthTalkNewYorkCityBuildin

Just one percent of New York City buildings burn noxious heating
oil, but those structures create more soot than all of the city’s cars
and trucks combined. A new program there will switch out those
fuels with cleaner burning oil, biodiesel or natural gas.
Credit: iStockPhoto

Due to this preponderance of soot in the air, asthma rates in some parts of the Big Apple (like Harlem and parts of the Bronx) are sky high. Environmentalists have been pointing the finger for years at the dirty residential heating oil used by so many New York City buildings, many of which were built before natural gas was widely available. According to the non-profit Environmental Defense Fund (EDF), just one percent of the buildings across the five boroughs of New York City burn noxious heating oils, but those structures send more particulate matter airborne than all of the city’s cars and trucks combined.

That’s why mayor Michael Bloomberg announced this past June that an innovative public-private partnership (known as NYC Clean Heat) between the city’s government and leading banks, energy providers and environmental groups would be putting up $100 million in financing and other new resources to help buildings there make the switch to cleaner fuels. NYC Clean Heat kicked off last year when the city ordered the phase-out of the dirtiest home heating fuels: No. 4 and No. 6 oils that are still used in some 10,000 New York City buildings and which create a significant air pollution hazard. Switching out those fuels with cleaner burning oil (such as No. 2), biodiesel or natural gas will go a long way toward meeting Bloomberg’s aggressive new “PlaNYC” goal of reducing soot pollution some 50 percent by 2013. The mayor’s office reports that the new restrictions will save 120 lives and prevent 300 asthma-related hospital visits a year, while generating some $300 million in construction activity in the short term.

Property owners interested in a clean heat conversion can access the funding, which is coming from a combination of city coffers and financial institutions including Chase, Deutsche Bank, Hudson Valley Bank, Citi and the Community Preservation Corporation. On the environmental side, EDF is offering technical assistance and outreach to buildings that are undergoing fuel conversions by making available a team of trained energy professional to help evaluate conversion options, coordinate with utilities and beef up energy efficiency measures. As for the utilities, Con Edison and National Grid, the two primary providers for the New York City metro area, have agreed to upgrade their natural gas infrastructure to make it easier and cheaper for buildings to make the switch. And Hess Corporation, the city’s largest residential heating oil provider, has begun to offer customers new incentives to switch to natural gas, ultra-low sulfur No. 2 heating oil and biodiesel.

Large numbers of buildings in several other older U.S. cities, mostly in the Northeast, still rely on dirty heating oil, mostly because they were built before natural gas was widely available. Whether some of these locales will follow New York City’s lead in marshalling resources to facilitate a wholesale switchover remains to be seen and may hinge upon the success of New York City’s program. But no doubt individual property owners who can make the switch are doing it of their own accord due to the low price of natural gas versus oil.

CONTACTS: NYC Clean Heat, www.nyccleanheat.org; EDF, www.edf.org.

EarthTalk® is written and edited by Roddy Scheer and Doug Moss and is a registered trademark of E - The Environmental Magazine ( www.emagazine.com). Send questions to: This email address is being protected from spambots. You need JavaScript enabled to view it. . Subscribe: www.emagazine.com/subscribe. Free Trial Issue: www.emagazine.com/trial.

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