1:30 PM Shipley, Bill^*,1, ¹ Département de biologie, Sherbrooke, Québec, Canada Translating from the language of causality to the language of probability (and back ...).

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2:00 PM Grace, James¹, ¹ USGS, Lafayette, LA The utility of multivariate hypothesis testing as illustrated through the study of plant diversity.

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2:30 PM Walker, Marilyn^{*,1, 2}, Carroll, Amy^{1, 3}, Wahren, Carl¹, Borner, Andrew^{1, 3}, ¹ Boreal Ecology Cooperative Research Unit, Fairbanks, AK² USDA Forest Service PNW Station, Fairbanks, AK³ Dept. of Biology and Wildflie, Fairbanks, AK Phenological responses to changing climate in arctic plant communities.

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3:00 PM Horvitz, Carol^*,1, Schemske, Douglas², ¹ University of Miami, Coral Gables, FL, USA² Michigan State University, East Lansing, MI, USA Path analysis of the effects of biotic interactions on reproduction in a neotropical herb.

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3:30 PM Johnson, Jerald^*,, Getting from pattern to process in evolutionary ecology: testing alternative models of life-history evolution.

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4:00 PM Backus, Vickie^*,1, Herbers, Joan², ¹ Middlebury College, Middlebury, VT² Ohio State University, Columbus, OH Testing alternative models of social evolution.

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4:30 PM Scheiner, Samuel^*,1, ¹ National Science Foundation, Arlington, VA Path analysis and measuring natural selection.

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