Eastern migratory monarch butterfly population estimates and associated early warning signals (2006-2022)
Description
The long decline of the eastern migratory population of monarch butterflies (Danaus plexippus) appears to have abated in recent years and the population now persists at a much-reduced abundance. Stochastic variation in abundance typical of monarch butterflies, and other insects, places this population at heightened risk of quasi-extinction, a level of abundance below which recovery of the migratory behavior is uncertain. These data and results provide insight into the near-term status and trajectory of the eastern migratory population of monarch butterflies. Within the stationarymonarchdata.csv, overwinter[ha] are annual monarch butterfly overwinter area occupied estimates as provided by World Wildlife Fund-Mexico and breedingcounts are annual indices of Illinois Butterfly Monitoring Network counts of monarch butterflies in summer.
Resources
| Name |
Format |
Description |
Link |
|
55 |
The metadata original format |
https://data.usgs.gov/datacatalog/metadata/USGS.650da0d2d34e823a0274074c.xml |
|
55 |
Landing page for access to the data |
https://doi.org/10.5066/P9WRARO7 |
Tags
- biota
- mexico
- extirpation
- usgs-650da0d2d34e823a0274074c
- extinction
- north-america
- illinois