Journal archives for July 2018

July 02, 2018

Increases in crayfish observations over the last 10 years.

Over the last 10 years on iNaturalist, the number of crayfish observations each year has been between 1.5 to 2.1 times the number observed the previous year. During the last five years, the number has been very close to 2 (1.8-2.1). Here is the breakdown of number of observations and factors for each year:

2743 2.0
1402 1.8
761 2.1
367 1.9
195 1.8
106 1.7
63 1.5
41 1.6
26 1.5
17 --

There was 161 times the number of crayfish observations during the last year than there was during a year ten years ago. I think this trend follows the same trend for iNaturalist as a whole. How long will this amazing trend continue?

Posted on July 02, 2018 02:13 AM by dan_johnson dan_johnson | 3 comments | Leave a comment

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