2023 Early Hearing Detection & Intervention Conference

March 5-7, 2023 • Cincinnati, OH

5/25/2021 | 2:00 PM - 3:30 PM | Harmful cyanobacterial bloom (HCB) dynamics in Wyoming reservoirs | Virtual Platform

Harmful cyanobacterial bloom (HCB) dynamics in Wyoming reservoirs

Harmful cyanobacterial blooms (HCBs) are a growing concern among resource managers due to detrimental effects to ecosystem function, recreation, and drinking water sources. In Wyoming, the awareness and frequency of blooms has increased in recent years with over 20 advisories in 2020. Previous studies have identified climate and nutrient loading as factors that can encourage blooms, however drivers of HCBs are understudied across Wyoming's unique hydrological regimes and landscape features. To address this knowledge gap, we used satellite imagery and climate data to identify how climate and watershed characteristics make waterbodies susceptible to HCBs. We obtained cyanobacteria abundance and chlorophyll-a estimates from Sentinel-3 satellite images for 40 lakes in Wyoming. These estimates will be paired with climate and land use data from the LAGOS (Lake Multi-Scaled Geospatial and Temporal database) dataset to predict how climate and watershed characteristics drive blooms. This project will increase understanding of historical trends in HCBs and their drivers in Wyoming, helping to inform management actions that address their frequency and intensity.

Nutrients
Land use
Global change

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Presenters/Authors

Sam Sillen (), University of Wyoming, ssillen@uwyo.edu;