Mercury and Rice in the California Delta

• Wetlands are hotspots for mercury methylation and export of methylmercury to aquatic foodwebs.
• Rice is the most abundant wetland type in California and globally in temperate and tropical latitudes.
• Physical, chemical and biological Hg transformations are temporally pulsed in agricultural wetlands, due largely to seasonal water management practices.
• Monitoring methylmercury at the right time and location is essential to managing and projecting future exposure for wildlife and humans.

Speaker: Lisamarie Windham-Myers, USGS