Poster # 46. HERMANN, MARCIA^*,1, ¹ LADY BIRD JOHNSON WILDFLOWER CENTER, AUSTIN, TX Regional ecotype seed production in Texas.

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Poster # 47. LaDeau, Shannon^*,1, Clark, James¹, ¹ Duke University, Program in Ecology, Durham, NC Comparisons of male and female reproductive effort in temperate tree species.

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Poster # 48. Kush, John^*,1, Pederson, Neil², ¹ Auburn University, Auburn University, Alabama² Lamont-Doherty Earth Observatory, Palisades, New York Temperature: The primary factor in longleaf pine pollen, strobili and cone production.

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Poster # 49. Carlo, Tomas^*,1, Martinez del Rio, Carlos², ¹ University of Colorado, Boulder, CO² University of Wyoming, Laramie, WY A new technique to determine seedling parenthood using a stable isotope marker.

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Poster # 50. Comita, Liza^*,1, Hubbell, Stephen^1,2, ¹ University of Georgia, Athens, GA² Smithsonian Tropical Research Institute, Balboa, Panama Maintenance of diversity in a neotropical tree community: New insights from the seedling layer.

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Poster # 51. Dyer, Andrew^*,1, ¹ Dept. of Biology & Geology, Aiken, South Carolina Population-level variation of induced seed dormancy in an invasive annual grass.

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Poster # 52. LEONG, JOAN^*,1, ¹ California State Polytechnic University, Pomona, CA Small scale foraging strata of wetland bees.

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