Analysis: Defend Half the Planet, Get Practically All of Nature’s Rewards


Map of the world highlighting three different kinds of areas important for biodiversity and for nature’s contributions to people.
New analysis exhibits which areas are most essential for biodiversity and for nature’s contributions to folks (blue)—and that are almost certainly to be developed (yellow). The research discovered that there’s a lot of overlap (inexperienced), and that greater than one-third of the crucial landscapes for animals and individuals are at excessive danger for improvement. Graphic from Neugarten et al. 2024.

From the Spring 2024 problem of Dwelling Chook journal. Subscribe now.

New analysis signifies that strategically safeguarding just below half of Earth’s land may keep practically all of nature’s contribu­tions to folks—like water high quality, meals, flood safety, and carbon storage—whereas additionally assembly the wants of tens of 1000’s of animal species from birds to mammals to reptiles. Nevertheless, solely 18% of these crucial landscapes are presently protected, and greater than a 3rd of those lands are at excessive danger for improvement.

Ecologist Rachel Neugarten, lead creator of the analysis revealed in Jan­uary in Nature Communications, says these areas warrant specific consideration because the world scrambles to fulfill biodiver­sity and local weather change targets.

“Biodiversity, local weather, and maintain­in a position improvement can’t be thought-about in isolation,” she says. Neugarten, who acquired her PhD from Cornell Univer­sity and is now the chief director of conservation planning on the Wildlife Conservation Society, says that conser­vation and sustainability efforts ought to think about “how a lot nature you must keep wholesome fisheries, pollination providers for agriculture, flood mitiga­tion, coastal safety, etcetera. All of the issues that individuals depend on.”

A key end result of the analysis was a map exhibiting areas—corresponding to mangroves, forests, grasslands, and shrublands—the place biodiversity, nature’s contribu­tions to folks, and possible future improvement overlap. One space of inter­part that stood out in North America was the Southeast, particularly the peaks, valleys, and foothills of the Southern Appalachians.

The Southern Appalachians are recognized for freshwater organic diver­sity, internet hosting globally important con­centrations of fish, crayfish, mussels, and salamanders. The area can also be dwelling to essential populations of Gold­en-winged Warbler, Bachman’s Sparrow, and Prairie Warbler—all three listed as Tipping Level species within the 2022 State of the Birds report. In response to the Highland Organic Station, the Southern Appalachians comprise greater than 10,000 documented species of animals, vegetation, and fungi—making it some of the biodiverse temperate areas on the planet.

a gray-yellow bird on a stick with a caterpillar in its bill.
A younger Prairie Warbler within the southern Appalachian mountains. Photograph by Paul Nielson / Macaulay Library.

The area additionally delivers essential ecosystem providers for folks, says Neu­garten: “Every thing from carbon [stor­age], agriculture, timber, water high quality, even flood safety … the forests absorb water when there may be an excessive amount of, and launch it when there may be too little.”

Neugarten and her crew have been sur­prised to seek out that renewable power improvement, corresponding to photo voltaic and wind farms, are poised to have an effect on extra land globally through improvement than some other sort of potential use.

“We have a tendency to consider agriculture as the largest driver of habitat conversion and degradation, which is true traditionally, however going ahead it’s prone to be renew­in a position power,” she says, “as a result of the locations which might be extremely appropriate for renew­in a position power haven’t but been transformed.

“Renewable power is totally crit­ical for combating local weather change, but when we’re not cautious, that may doubtlessly battle with our conservation objectives.”

Neugarten says revolutionary tasks are exhibiting methods to maximize advantages in several methods, corresponding to a photo voltaic array in Minnesota the place pollinator habi­tat underneath photo voltaic panels can also be serving to to handle stormwater.

Amanda Rodewald, a coauthor of the analysis and senior director of the Cornell Lab of Ornithology’s Heart for Avian Inhabitants Research, says that these sorts of tasks present renewable power tasks might be fastidiously deliberate to take care of nature’s advantages to folks and assist preserve biodiversity.

“With restricted sources out there to handle local weather change, biodiversity loss, poverty, and water insecurity, we should be strategic and artistic and discover methods to sort out multiple problem at a time,” Rodewald says.

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