Research at Amigos Del Lago in Lake Atitlan, Guatemala
As part of the UC Davis study abroad program, I was able to conduct research at Lake Atitlan, focusing on combining the principles of wetland ecology, aquatic science, and social science under the supervision of Dr. Eliska Rejmánková and Dr. Jenise Snyder. Lake Atitlán is located in the highlands of Guatemala and is known as one of the most beautiful lakes in the world; however, the lake’s ecology has undergone drastic changes as a result of globalization. The lake basin provides 100,000 people in the region drinking water and has been traditionally inhabited by Mayan Indian groups that have exerted minimal impacts on their environment. However, over the last few decades, extensive environmental degradation has increased within the region as a result of tourism growth, land-use changes, nitrogen, and phosphorus loading, and climate change impacts. In December 2008, a large cyanobacteria bloom of Lyngbya robusta occurred due to the increased nitrogen and phosphorous entering the watershed.
Our study explored the impacts of an invasive macrophyte, Hydrilla sp., on water quality and native aquatic plant communities through a collaborative research project that integrated mesocosms and field sampling. Our field and lab research focused on I) data on pelagic processes and biogeochemical gradients along with the depth profile II) ecological impact of invasive species on native population densities and species diversity within aquatic ecosystems III) the effectiveness of local macrophytic plants in preventing eutrophication and improving water quality. Our research elucidated that Hydrilla sp. improves water chemistry due to its high bioaccumulation of nitrogen, phosphorus, and arsenic; however, it outcompetes native plant communities. Further, we explored the societal impact of the lake's state of degradation as a consequence of multiple environmental drivers through conducting interviews with various stakeholders and indigenous communities. Once completed, we met local governmental agencies to discuss our findings and potential management strategies of Hydrilla sp. on the lake. This research project allowed me to gain skills in communicating science and policy in my native tongue, Spanish. Consequently, this experience inspired me to continue linking science with policy-makers, conservationists, and local communities.