Earth’s Oldest Trees in Climate-Induced Race up the Tree Line — Bristlecone pine trees in the Great Basin are losing the game of leapfrog with the limber pine

Summary: Tree-line species are shifting in the Great Basin of the U.S. Limber pine trees are ‘leapfrogging,’ slowly, over ancient bristlecone pines upslope. If limber pine trees block bristlecones from advancing upslope, bristlecones could face local extirpations. *     *     *     *     * Bristlecone pine and limber pine trees in the Great Basin region are like…

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Marie Jasieniuk: David W. Staniforth Memorial Lecture

Plant Sciences professor Marie Jasieniuk was invited to give the twenty-seventh annual David W. Staniforth Memorial Lecture at Iowa State University in October. Her presentation was “Managing the Evolution of Weed Adaptations.” Jasieniuk’s expertise is in the evolution, population genetics, molecular ecology, and management of herbicide-resistant weeds. She is an international expert in the population…

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High-Severity Wildfires Complicate Natural Regeneration for California Conifers: New Tool Helps Foresters Prioritize Restoration Efforts

Quick summary Only about half of conifer trees regenerated five to seven years after wildfire in sites studied. Study spanned 10 national forests and 4 burned areas in California. Study presents tool to help foresters prioritize which lands to plant after a wildfire. A study spanning 10 national forests and 14 burned areas in California…

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Restoring Back to the Future

Climate change raises an important question for restoration ecology: What’s the best way to heal the land when its future environment won’t look like its past? “It’s a huge issue,” said Valerie Eviner, a restoration ecology professor in the Department of Plant Sciences. “We look at our changing climate and ask, ‘What will grow? What’s…

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