ebird / ebird-best-practices

Best Practices for Using eBird Data
https://ebird.github.io/ebird-best-practices/
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Encounter rate chapter content and occupancy probability #7

Open ManuelSpinola opened 5 months ago

ManuelSpinola commented 5 months ago

I asked a related question before, but after reading chapter 4, Encounter rate, I am confused.

In chapter 4 it says, "The ecological metric we’re ultimately interested in is the probability that a species occurs at a site (i.e. the occupancy probability). This is usually not possible to estimate with semi-structured citizen science data like those from eBird because we typically can’t estimate absolute detectability. "

So, how this statement relate to the function "format_unmarked_occu" in the auk package?

mstrimas commented 5 months ago

The encounter rate chapter covers modeling the probability of detecting the species on an eBird checklist, which doesn't account for detectability. However, in some cases, you can use eBird data to train occupancy models that do account for detectability and provide estimates of occupancy probability. This is what the function format_unmarked_occu() is used for. The previous version of this book did cover using eBird data for occupancy modeling, but version 2 no longer includes this section. I don't have any experience with occupancy modeling, but if you're interested in it, I would suggest consulting this recent paper:

https://academic.oup.com/auk/article-abstract/140/4/ukad035/7229681

ManuelSpinola commented 5 months ago

Thank you very much.

El jue, 4 abr 2024 a las 16:48, Matt Strimas-Mackey (< @.***>) escribió:

The encounter rate chapter covers modeling the probability of detecting the species on an eBird checklist, which doesn't account for detectability. However, in some cases, you can use eBird data to train occupancy models that do account for detectability and provide estimates of occupancy probability. This is what the function format_unmarked_occu() is used for. The previous version of this book did cover using eBird data for occupancy modeling, but version 2 no longer includes this section. I don't have any experience with occupancy modeling, but if you're interested in it, I would suggest consulting this recent paper:

https://academic.oup.com/auk/article-abstract/140/4/ukad035/7229681

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