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Lortie et al. 2009

Cage Matching: Head to Head Competition Experiments of an Invasive Plant Species from Different Regions as a Means to Test for Differentiation. Lortie et al. 2009. Why are invasive successful?. Invasion Hypotheses . EICA – evolution of increased competitive ability Disturbance regimes.

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Lortie et al. 2009

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  1. Cage Matching: Head to Head Competition Experiments of an Invasive Plant Species from Different Regions as a Means to Test for Differentiation Lortie et al. 2009

  2. Why are invasive successful?

  3. Invasion Hypotheses • EICA – evolution of increased competitive ability • Disturbance regimes

  4. Ecotypic differentiation • How the population of a species adapts to a particular set of environment conditions Shade-tolerant plant Full-sun plants

  5. Objective Compare inter vs. intra regional competitive ability

  6. Methods

  7. Results

  8. Results For mixed plots For mixed plots

  9. ? >

  10. Novelty • Compares invasibility of the same species in two different populations • Focus on environmental drivers for plant invasion • Couples biogeography with population ecology.

  11. Future work? Compare YST in the native range

  12. Questions • What is ecotypic differentiation? • How does ecotypic differentiation relate to competition? • How was the Californian population more successful than the Argentinean population? • What are some ways to experimental measure the response of competition in plants?

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