Table 1
Summary of leaf-out and bloom messages opened, received but not opened, and not received by lilac observers in 2018, 2019, and 2020. Email message open rate provided in (%); these rates are calculated as the percentage of individuals receiving the messages that opened them.
| 2018 | 2019 | 2020 | Total | ||
|---|---|---|---|---|---|
| Leaf messages | Received and opened | 53 (58%) | 48 (48%) | 21 (62%) | 122 |
| Received but did not open | 39 (38%) | 51 (50%) | 13 (13%) | 103 | |
| Did not receive | 41 (32%) | 39 (30%) | 50 (38%) | 130 | |
| Total | 133 | 138 | 84 | 355 | |
| Bloom messages | Received and opened | 66 (77%) | 34 (47%) | 6 (100%) | 106 |
| Received but did not open | 20 (34%) | 38 (66%) | 0 (0%) | 58 | |
| Did not receive | 0 (0%) | 46 (37%) | 77 (63%) | 123 | |
| Total | 86 | 118 | 83 | 287 |
Figure 1
Accuracy in reports of phenological transitions contributed by Nature’s Notebook observers that received and opened, received but did not open, and did not receive email-based messages, shown as the number of days between when (a) leaf-out and (b) bloom was predicted to occur and when it was reported to occur in lilacs. Error bars represent two standard deviations. Levels not connected by the same letter are significantly different.
Figure 2
Precision in reports of phenological transitions contributed by Nature’s Notebook observers that received and opened, received but did not open, and did not receive email-based messages, shown as the number of days between when the observer reported a “no” and when they first reported “yes” to (a) leaf-out and to (b) open flowers. Error bars represent two standard deviations. Levels not connected by the same letter are significantly different.