Sentinel Site - by The Reserve




Mission-Aransas National Estuarine Research Reserve

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Katie Swanson, Stewardship Coordinator for the Mission-Aransas National Estuarine Research Reserve, discusses the Reserve's sentinel site program and how the data is used. The primary focus of the National Estuarine Research Reserve System’s Sentinel Site Program is to understand changes in sea level and inundation and the associated responses of the marsh, mangrove, and seagrass. The goal of the sentinel site program is to monitor the change in elevation in marsh, mangroves and seagrass beds over a long-time scale. This change is measured by installing Surface Elevation Tables (SETs). Determining the elevation change and how the plants respond to it will allow us to predict how sea level changes are affecting the local environment and predict how vulnerable our ecosystem is.To learn more visit The build out of this system was partially funded by the Coastal Bend Bays & Estuaries Program. Find out more information at

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