just blue skies here, but i was wondering if there has ever been any thought into possibly one day giving iNat the ability to capture observations of absence of an organism? it might be hard to do community confirmations on such observations, but it might be interesting data, especially if those observations of absence can be combined with observations of presence.
- obs 1 (presence): May 1 2018: here’s a majestic oak in a field. such a beautiful tree!
- obs 2 (presence): Nov 30 2018: here’s the same oak from obs 1. its leaves are starting to fall. and uh oh! there’s construction machinery right over there.
- obs 3 (absence): Mar 15 2019: the oak is gone. there’s a parking lot here now.
- obs 1 (presence): April 1 2018: here’s a Chinese tallow in a section forest with lots of small Chinese tallows popping up. we’d better get to work!
- obs 2 (absence): April 15 2018: we pulled out the Chinese tallow, and now it’s all gone.
- obs 3 (absence): Nov 15 2018: still no new tallow in this section of the forest. (hooray!)
- obs 4 (presence): April 1 2019: dang! the Chinese tallow is back!
- obs 1 (presence): Sep 30 2018: first Monarch of the season in my backyard
- obs 2 (presence): Oct 1 2018: another Monarch passing through
- obs 3 (presence): Oct 9 2018: went out of town for a few days. but I still saw this Monarch in the backyard when I got back.
- obs 4 (absence): Oct 10 2018: no Monarch sightings today.
- obs 5 (absence): Oct 15 2018: no Monarch sightings today, and none since obs 4. they must all have passed through for the year.