Dr. Andrew S. Mehring will introduce the fields of zoogeochemistry and ecosystem ecology, and will then discuss the results of a 2.5-year long project that tested the effects of waterbirds and invertebrates on greenhouse gas (GHG) emissions in coastal Mediterranean wetlands. Their FLAMMINGGOS project (Functional Links in Avian, Microbial, Macrophyte, and INvertebrate Greenhouse Gas Output Stimulation) manipulated the presence of predatory waterbirds with 126 long-term waterbird exclosure plots in 11 wetlands of the Doñana Natural Space, Marismas del Odiel wetlands, and Bay of Cadiz wetlands in southern Spain from 2019-2021. Water-to-air emissions of carbon dioxide (CO2) and methane (CH4) were measured in situ, and benthic fluxes of CO2, CH4, and nitrous oxide (N2O) were measured in the lab. Densities of benthic invertebrates and fluxes of CO2 were higher when flamingos were excluded, and invertebrate densities were positively correlated to fluxes of CO2 and CH4 in both field and laboratory experiments. Finally, Mehring will briefly discuss the other environmental correlates of GHG emissions within these Spanish wetlands, and related conservation implications.