I am interested in exploring examples of invasions where the invader was ultimately *less* abundant or successful than initially expected based on predictions or other invasions by the same species.  

One example we have in Washington State is the European green crab, which was initially expected to be extremely abundant and problematic, but was/is ultimately held to very low abundances by biotic and abiotic factors. 

I know there are many examples of unanticipated, qualitatively positive effects of invaders, but I am more interested in influences on variability in the numerical success of invaders.

Thanks!

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