Detection probability

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Laura D'Acunto

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Jan 26, 2012, 12:09:03 PM1/26/12
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Hi all,

One of my sample sites has a much higher detection probability than my
other sampling areas, which causes my Maxent model to wrongly
associate landscape variables from this one site to the species. Is
there a way within Maxent to adjust the model to account for these
differences in detection probabilities?

Thanks,
Laura

John B

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Feb 6, 2012, 7:07:29 PM2/6/12
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I think that the issue you describe is effectively the same as that faced when we use occurrence datasets that include sites/environments that are more frequently sampled than others (i.e. spatial and/or environmental sampling bias).

You could use a bias grid to generate a background sample with similar bias (or else supply your own, similarly biased background sample), which I believe should cancel the bias out.
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