kaitlyngaynor
commented
3 years ago Great investigation!
For more info, I'm essentially just planning to re-create the camera operation spreadsheet so that there is only one row per camera. I have done this manually a couple of times and always make mistakes so I'm trying to figure out a way to code it up so it doesn't require copy-pasting and brain energy. But I'm waiting to see if Meredith has successfully worked with it, so as to avoid re-inventing the wheel. Stay tuned.
I think I set some threshold of 10 days (for considering a camera operational) at some point, which seems low. I think a lot of best practices for occupancy surveys suggest 2 weeks so maybe this is justifiable. See this paper https://besjournals.onlinelibrary.wiley.com/doi/10.1111/2041-210X.13370 "Running a camera at a site for 2 weeks was most efficient for detecting new species, but 3–4 weeks were needed for precise estimates of local detection rate, with no gains in precision observed after 1 month."
And to clarify, the cameras weren't taken down, that's just when they were last checked—they should still have data, it's just on SD cards sitting on Mozambique, which will be returning to the US in March, so we may still be able to fill in those gaps.
On Tue, Feb 16, 2021 at 7:01 PM klg-2016 notifications@github.com wrote:
I just finished putting together this spreadsheet to get a better sense of which cameras were operational when: https://docs.google.com/spreadsheets/d/12F1dqicDzqo5jgYea0d8uKjulvZsR9SBHq51wLpVLQk/edit#gid=0 (I think it's related to the one you might be working on, but specifically focused on the late dry season. Please let me know if you want any help putting together the one you mentioned in your email)
I'm starting to think about what restrictions should be imposed on counting a camera for a particular season (i.e. does it need to have been operational for half the season? 5 days? one month?) and coming back to thinking about including cameras that were not operational for all four years. No cameras have data for the full late dry season for all four years (most cameras were taken down in October 2019). 20 cameras are missing at least one year's worth of data. I might have seen something while reading the camtrap package info about including cameras that don't have data for all the seasons, I'll go back and see if I can find it. I just wanted to get this written out while I'm thinking about it.
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klg-2016
I just finished putting together this spreadsheet to get a better sense of which cameras were operational when: https://docs.google.com/spreadsheets/d/12F1dqicDzqo5jgYea0d8uKjulvZsR9SBHq51wLpVLQk/edit#gid=0 (I think it's related to the one you might be working on, but specifically focused on the late dry season. Please let me know if you want any help putting together the one you mentioned in your email)
I'm starting to think about what restrictions should be imposed on counting a camera for a particular season (i.e. does it need to have been operational for half the season? 5 days? one month?) and coming back to thinking about including cameras that were not operational for all four years. No cameras have data for the full late dry season for all four years (most cameras were taken down in October 2019). 20 cameras are missing at least one year's worth of data. I might have seen something while reading the camtrap package info about including cameras that don't have data for all the seasons, I'll go back and see if I can find it. I just wanted to get this written out while I'm thinking about it.