Event Title

Competitive Exclusion Between Echinacea angustifolia and Echinacea purpurea

Session Number

C06

Advisor(s)

Stuart Wagenius, Chicago Botanic Garden

Location

B-125 Tellabs

Start Date

28-4-2016 9:50 AM

End Date

28-4-2016 10:15 AM

Disciplines

Biology

Abstract

The potential impacts of future invasive species in habitat restorations and preservations can be better understood through examining the effects of a non-native species in a remnant prairie plant community. This study will accomplish this through testing the competitive exclusion principle, creating an environment where Echinacea purpurea and Echinacea angustifolia , a non- native species and a native species, are competing directly for resources, and will measure the height of the seedlings of these two species when they are grown together. Over the course of the investigation, E. angstifolia and E. purpurea seedlings were planted in three levels of treatment: individual E. angustifolia seedlings, individual E. purpurea seedlings, and E. purpurea and E. angustifolia . There were also varying density levels of these species. Based on preliminary data, E. purpurea seems to grow shorter in mixed treatments, while E. angustifolia seems to grow taller in mixed treatments. Currently, 259 total seedlings across 189 pots are being measured in order to gather more data, 206 of which are E. angustifolia and 53 of which are E. purpurea . This study seeks to demonstrate the competitive exclusion principle between E. angustifolia and E. purpurea , which will provide insight into their behavior in other competitive settings.


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Apr 28th, 9:50 AM Apr 28th, 10:15 AM

Competitive Exclusion Between Echinacea angustifolia and Echinacea purpurea

B-125 Tellabs

The potential impacts of future invasive species in habitat restorations and preservations can be better understood through examining the effects of a non-native species in a remnant prairie plant community. This study will accomplish this through testing the competitive exclusion principle, creating an environment where Echinacea purpurea and Echinacea angustifolia , a non- native species and a native species, are competing directly for resources, and will measure the height of the seedlings of these two species when they are grown together. Over the course of the investigation, E. angstifolia and E. purpurea seedlings were planted in three levels of treatment: individual E. angustifolia seedlings, individual E. purpurea seedlings, and E. purpurea and E. angustifolia . There were also varying density levels of these species. Based on preliminary data, E. purpurea seems to grow shorter in mixed treatments, while E. angustifolia seems to grow taller in mixed treatments. Currently, 259 total seedlings across 189 pots are being measured in order to gather more data, 206 of which are E. angustifolia and 53 of which are E. purpurea . This study seeks to demonstrate the competitive exclusion principle between E. angustifolia and E. purpurea , which will provide insight into their behavior in other competitive settings.