Multispecies Occupation Models for Different Groups

[José Wagner Ribeiro Júnior]

Dear all,

I have a dataset of detections and non-detections of birds, mammals, and amphibians from passive acoustic monitoring. I would like to run a multi-species occupancy model on these groups to examine the effects of certain landscape variables on occupancy at the community level and produce a species richness map using a Z matrix.

Does it make sense to run a single model for all three groups simultaneously? If so, what would be the best approach? Any advice or suggested literature would be greatly appreciated.

Thank you for your feedback.

Best regards,

José Ribeiro

[Marc Kery]

Dear Jose,

yes, I would run a single model for all three. If you like, then you can still keep the parameters for all 3 taxon groups completely separated. In that case, you will get identical estimates as if you would get when you fitted 3 separate models, one for each group. However, fitting a single model greatly simplifies computation of derived quantities, such as sums of the z matrices (a.k.a., species richness). In addition, perhaps it makes sense to have some shared parameters across these groups, notably perhaps in the detection model, if some factors (weather ? camera malfunction, .... ?) may affect all of them in a similar way.

Best regards  --- Marc

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From: hmec...@googlegroups.com <hmec...@googlegroups.com> on behalf of José Wagner Ribeiro Júnior <jwribei...@gmail.com>
Sent: Monday, July 8, 2024 20:05
To: hmecology: Hierarchical Modeling in Ecology <hmec...@googlegroups.com>
Subject: Multispecies Occupation Models for Different Groups

 

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