Tallgrass prairie butterfly surveys in recent decades in four states in the USA indicate numerous declines of prairie-specialist butterflies including Speyeria idalia, Oarisma poweshiek, Atrytone arogos, Hesperia dacotae, and H. ottoe in fire-managed preserves, including large high-quality ones.
Source:
Scott R. Swengel • Dennis Schlicht • Frank Olsen • Ann B. Swengel
J Insect Conserv (2011) 15:327–339
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