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Activity Number:
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201
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Type:
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Contributed
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Date/Time:
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Monday, August 7, 2006 : 2:00 PM to 3:50 PM
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Sponsor:
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Section on Statistics and the Environment
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| Abstract - #306671 |
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Title:
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The Federally Threatened Plant Species, Missouri Bladderpod: Model Selection and Validation
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Author(s):
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William Leeds*+ and Hyun-Joo Kim and Corey Elledge and Michael Kelrick and Elizabeth Bobzien and James Franklin
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Companies:
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Truman State University and Truman State University and Truman State University and Truman State University and Truman State University and Truman State University
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Address:
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100 Normal, Kirksville, MO, 63501,
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Keywords:
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Missouri bladderpod ; logistic model ; model selection criteria ; model selection uncertainty ; model validation ; environmental statistics
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Abstract:
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Missouri bladderpod (Lesquerella filiformis) is a federally threatened plant species found in southwest Missouri and northern Arkansas. Understanding how Missouri bladderpod's abundance is related to its habitat is crucial for its conservation. Abundance of Missouri bladderpod and percent cover of several habitat attributes were recorded in Springfield, MO in 1997, 1998, 2003 and 2005. Logistic regression models were created to describe the relationship between presence of L. filiformis and percent cover of the habitat attributes. We are developing optimal models using both conventional model-selection criteria and Akaike weights based on model-selection uncertainty. Once these models are created, we will assess their performances using a data set from an independent site.
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