Tracking trends in monarch abundance over the 20th century is currently impossible using museum records

Research Area: 
Butterfly Informatics and Citizen Science
Type: 
Journal article
Year: 
2019
PDF icon Ries et al 2019 PNAS.pdf

Ries, L., E. Zipkin, R. Guralnick. 2019. Tracking trends in monarch abundance over the 20th century is currently impossible using museum records. Proceedings of the National Academy of Sciences Jul 2019, 116 (28) 13745-13748; DOI: 10.1073/pnas.1904807116

Supplementary Link(s): 
Dryad data repository
Biorxiv preprint