I have just been looking at the data for the past 6 years to see whether it is possible to say how 2018 compares with previous Autumns. On the ground, it seems as though the numbers of records has dropped precipitously this year and that this has been matched by the numbers of species; but is this really the case?Moreover, do major storms completely knock down numbers?
I tried various formats for presenting the data before I hit upon the idea of superimposing 2018 over preceding years as a running process. So, Figures 1 and 2 present the numbers of records and numbers of species. I think what they show is that 2018 is substantially down on previous years in terms of the numbers of records, but that the numbers of species encountered is still holding up quite well against previous years.
 |
Figure 1. Numbers of records extracted from social media between 2013 and 2017 with those for 2018 superimposed.
|
 |
| Figure 2. Numbers of species in data extracted from social media between 2013 and 2017 with 2018 superimposed. |
No comments:
Post a Comment