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Abstract Detail



Ecology

Waananen, Amy [1], Wagenius, Stuart [2].

Synchrony, Proximity, and Compatibility Influence Pollination Success in Fragmented Populations of Echinacea angustifolia.

Successful pollination limits reproduction in many plants, especially in fragmented environments. Reproduction is a critical component of demographic rates and determines mating patterns, which influence evolutionary processes such as inbreeding. Together, these demographic and evolutionary mechanisms may determine the fate of native species in fragmented environments. While the timing of mating, the spatial isolation of individuals, and their genetic compatibility each limit the likelihood of mating between individuals, these reproductive constraints of are rarely studied together. We characterized flowering phenology, spatial isolation, and mating incompatibility in 10 remnant populations of the perennial plant, Echinacea angustifolia, over three years and evaluated the influence of flowering synchrony, proximity to conspecifics, and genetic compatibility on pollination success. The degree of spatial and temporal isolation varied widely among individuals, as did the degree of compatibility in populations (ranging from 60% to 100%). Both flowering phenology and spatial isolation exerted a strong, interactive effect on seed set, independent of population size. By identifying the degree to which temporal, spatial, and compatibility constraints influence pollination in natural populations of Echinacea angustifolia, our research provides a basis for making demographic and evolutionary predictions about our study organism and insight to the fate of native prairie flora in fragmented environments.


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1 - University of Minnesota, 1987 Upper Buford Cir, St. Paul, MN, 55108, United States
2 - Chicago Botanic Garden, Conservation Science, 1000 Lake Cook Road, Glencoe, IL, 60022, USA

Keywords:
pollination
fragmentation
Self-incompatibility
phenology
isolation.

Presentation Type: Poster
Session: P, Ecology
Location: Grand Ballroom - Exhibit Hall/Mayo Civic Center
Date: Monday, July 23rd, 2018
Time: 5:30 PM This poster will be presented at 5:30 pm. The Poster Session runs from 5:30 pm to 7:00 pm. Posters with odd poster numbers are presented at 5:30 pm, and posters with even poster numbers are presented at 6:15 pm.
Number: PEC021
Abstract ID:806
Candidate for Awards:Ecological Section Best Graduate Student Poster


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