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In a warming climate, we need to radically rethink how we conserve nature  科技资讯
时间:2022-08-16   来源:[美国] Daily Climate

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Picture of a pair of towering buttes stand against beautiful scenery with sunrise on the left and sunset on the right.MagazineBears Ears, Southeastern Utah
This spectacular landscape is a symbol of the risk to some of the country’s unique and irreplaceable places. One president preserved it at the urging of Native Americans who hold it sacred; another tried to open it to drilling and mining. A national monument rich with archaeological sites, it includes the Citadel, once a fortified cliff dwelling, now a popular hiking spot. Stephen Wilkes took 2,092 photos over 36 hours and selected 44 for this image, capturing a sunrise, a full moon, and a rare alignment of four planets. “Beyond the sense of awe and beauty,” he says, “there’s a palpable sense of history with every step you take."

ByEmma MarrisPhotographs ByStephen WilkesIllustrations byDenise NestorPublished August 16, 2022• 40 min readShareTweetEmailTo create these landscapes, Wilkes found a vantage point and photographed all day and all night. He then chose a number of photos to merge digitally into a composite image to tell a story about a single day.

Conservation works. In the past century or so, efforts to save American species like the peregrine falcon, the American bison, and the Pacific gray whale have succeeded. But last year, the federal government proposed taking 23 species of plants and animals off the endangered species list—not because they’ve recovered, but because they’re now extinct. We have to do better.

My friend Karl Wenner shows up to meet me wearing scrubs with a canvas jacket thrown on top. He’s a retired surgeon, but he still spends a few hours a month teaching. He also co-owns Lakeside Farms in the Klamath Basin, a dry part of southern Oregon that has lost nearly all its wetlands. Without marshes, water runs into Upper Klamath Lake unfiltered and carrying phosphorus-rich volcanic soil, causing algal blooms that harm two federally listed sucker species found nowhere else on Earth. Every summer for decades now, nearly all the juvenile fish have died, leaving an aging population.

Picture of man s portraitThe NationalGeographic Society,committed to illuminating and protecting thewonder of our world,has funded ExplorerStephen Wilkes’s photography since 2016.ILLUSTRATION BY JOE MCKENDRYPlease be respectful of copyright. Unauthorized use is prohibited.

Wenner’s farm floods its fields in the winter, both to kill weeds and to create waterfowl habitat. In the past, I’ve come by to see huge flocks of ducks and swans coasting in to spend the night. We’d post up on a dike with binoculars and watch great vortices of waterfowl swirl down onto the water. His passion for birds is infectious.

But when the water was pumped off in the spring, it was so full of phosphorus that it counted as pollution. So this year, with about $350,000 from the U.S. government, Wenner and his co-owners created permanent wetlands on 70 of their 400 acres. The tangle of wetland plants will capture phosphorus-laden sediment before the farm’s irrigation water is returned to the lake. In addition, it’s year-round habitat for plants, birds, and—soon—baby suckers. “You can’t go back to before Europeans came to the basin,” he says, “but you can make it rhyme.” Despite his enthusiasm, Wenner tells me he can’t sacrifice profit to carve out this space for wildlife. “It has to pencil out,” he says.

His new wetland is a perfect rectangle, bordered by reeds and willows, with a partially submerged dike—a dotted line of islands for geese to nest on. As we drive alongside, Wenner tells me about the wildlife he’s seen in the new marsh, including lots of ducks: buffleheads, scaup, shovelers, canvasbacks, mallards. He spots a flash of color in the reeds. “Oh! The first yellow-headed blackbirds of the year!”

Picture of different kinds of birds.A yellow-headedblackbird perchesabove four duck—clockwise from top,a northern shoveler,canvasback, buffhead, and northernpintail—nestled amidbarley and waterwillow, which flourishin wetlands.Please be respectful of copyright. Unauthorized use is prohibited.

There is no single way to do conservation. Restoring ecosystems, fighting climate change, regulating hunting and fishing, eliminating pollution, helping trees beat deadly diseases, moving plants and animals to cooler habitats, killing introduced predators—all can play a role.

But the core idea is very straightforward: Plants and animals need somewhere suitable to live. Overharvesting is the main threat in the sea; on land and in freshwater, it’s habitat loss. To work, every other strategy depends on the existence of a suitable environment.

Seven days after his inauguration, President Joe Biden signed an executive order that set a goal: “conserving at least 30 percent of our lands and waters by 2030.” What counts as “conserved,” however, remains to be decided. The “30x30” proposal derives from a push to set a similar target for the entire planet, organized by the Campaign for Nature, a partnership of the Wyss Campaign for Nature and the National Geographic Society.

Conservation itself is broadly popular—a truly bipartisan issue in a deeply divided United States—but agreeing on the specifics of what will count toward the 30 percent is sure to be contentious. Allowing working lands and waters and city parks to be counted is likely to upset some conservationists. But any plan to designate almost a third of the country as strictly protected is also almost certain to alarm those who see thoughtful use as compatible with conservation—a group that includes many farmers, ranchers, fishers, hunters, and members of tribal nations eager to continue or resume traditional practices.

     原文来源:https://www.nationalgeographic.com/magazine/article/in-a-warming-climate-we-need-to-rethink-how-we-conserve-nature-feature

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