- University of Connecticut
- University of Connecticut
External person
- University of Kentucky
- University of Exeter
- University of Massachusetts
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- University of Nebraska-Lincoln
External person
- University of Nebraska-Lincoln
- United States Geological Survey
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- University of Nebraska-Lincoln
External person
- University of Nebraska-Lincoln
External person
- University of Montana
- University of Georgia
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- University of Nebraska-Lincoln
External person
- University of Montana
- Boise State University
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- University of Kentucky
- Portland State University
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- University of Kentucky
- Hong Kong Baptist University
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- University of Kentucky
- University of Missouri at St. Louis
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- University of Kentucky
- University of Exeter
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- University of Montana
- Oregon State University
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- University of Mississippi
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- California State University Fresno
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- Holden Forests and Gardens
- Cleveland Botanical Garden
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- James Cook University Queensland
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- James Cook University Queensland
External person
- University of Texas at Dallas
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- University of Connecticut
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- James Cook University Queensland
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- North Dakota State University
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- Michigan State University
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- University of California at Davis
- Boise State University
- Center for Large Landscape Conservation
- Grand Canyon Trust
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- University of Nebraska-Lincoln
- South Dakota Game
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- University of Mississippi
External person
- University of Montana
- James Cook University Queensland
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