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METHANE EMISSION DYNAMICS IN A TROPICAL RESERVOIR POST SALVINIA MOLESTA CONTROL
This study investigates the spatial dynamics of methane emissions from Las Curias Reservoir in Puerto Rico, following an extensive infestation and subsequent control of the invasive aquatic fern, Salvinia molesta. The intervention involved biological control through Cyrtobagous salviniae, a weevil species. Post-control, the decomposing biomass of Salvinia molesta was allowed to sink to the bottom of the reservoir, presenting a novel opportunity to examine the effect of macrophyte derived organic matter on methane production. This research employs a multifaceted methodology, encompassing floating chambers, inverted funnel traps, and comprehensive water chemistry analysis, to quantify both diffusive and ebullitive methane emissions across the reservoir during summer months. Special attention is given to areas adjacent to the dam, where significant bubbling events indicate concentrated methane release. The primary objective of this study is to elucidate the impact of Salvinia molesta decomposition on methane emissions in a tropical reservoir, thereby contributing to the understanding between invasive species management and methane emissions in tropical lentic ecosystems. The findings are expected to highlight the potential unintended consequences of invasive aquatic plant management.