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bowlerbear / MoreRangeChangeSims

Simulation Study for occupancy models
GNU General Public License v3.0
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Declining habitat quality #5

Open bowlerbear opened 5 years ago

bowlerbear commented 5 years ago

@katjaschiffers Using Luca's code to think about how we include declining habitat quality and its affect on visit probabiliyy

bowlerbear commented 5 years ago

mistake!

bowlerbear commented 5 years ago

mistake!

bowlerbear commented 5 years ago

At it stands, each site has a fixed spatial covariate value (assumed to reflect habitat quality), which affects species occurrence probability (in theory could also be allowed to affect detection probability).

There is also a time trend effect on occurrence to allow species to decline in occurrence over time.

To model effects of declining habitat quality, we could expand the spatial site covariate to be a space-time matrix and directly allow the habitat quality values to decline over time.

Or just assume species decline through the time effect?