Invasive species spread - PowerPoint PPT Presentation

Incursion response

Incursion response. Incursion Response - definition. There is information in the PII website for this part. Focus is here (about the first 2 weeks). What we will do and learn. Work through the most important preparedness needed for a response

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The Allee effect as a threshold in invasions

The Allee effect as a threshold in invasions. The Allee effect, most broadly, is when population size influences fitness. Allee et al. 1949 It can be a positive or negative relationship. There can be a threshold level in population size, below which the population declines. Cappuccino 2004.

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