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

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Presentation transcript:

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

Ecotypic differentiation How the population of a species adapts to a particular set of environment conditions Shade-tolerant plantFull-sun plants

Objective Compare inter vs. intra regional competitive ability

Methods

Results

 For mixed plots

> ?

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

Future work? Compare YST in the native range

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?