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Is it possible to have too many trees? The Great Plains have shown conservationists that in certain habitats like grasslands, "woody encroachment" can actually lead to biodiversity loss. The Nature Conservancy continues to innovate with new techniques that keep grasslands healthy and protected.

nature.lyThe Great Plains face a surprising threat: Too many treesTrees are usually seen as climate heroes. But across the Plains states, "woody encroachment" is crowding out the prairie.

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Yet many places in the Arkansas River Valley which featured tall stands of Cottonwoods before the arrival of settlers stand bare today. From when is an "encroachment" measured? Isn't the problem that we want things to stay a certain way rather than natural cycling?