Synthesis of wild orchid trade and demography provides new insight on conservation strategies

Abstract

Illegal wildlife trade represents a global conservation priority, but the booming illegal trade in wild plants remains understudied. We use the Mexican orchid trade to illustrate an interdisciplinary approach to provide novel insight on conservation strategies and policies. We synthesize studies of orchid markets, national orchid confiscation records, CITES registers, and global population dynamics studies to document trade patterns and potential ecological impacts. We found 333 wild-harvested orchid taxa illegally traded in domestic markets. Clear patterns emerged: 90% were epiphytic and <4% traded in high volumes, all of which had pseudobulbs and bloomed during cultural festivals. Most sales were pseudobulbs, not whole plants. Review of demographic studies indicates whole-plant harvest is unviable but simulations show potential for sustainable harvest of pseudobulbs. The combination of social and ecological findings suggests a novel multipronged approach to improve conservation, including selective monitoring, enforcement focused on whole-plant harvest, and community-based wild harvest of pseudobulbs.