StreamFRE: Canopy cover over Prieta stream

Measurements of canopy cover over Prieta Stream, as part of the Stream Flow Reduction Experiment (StreamFRE). Background: StreamFRE started in October 2016 with the goal of assessing the effects of droughts on stream ecosystems. The project is designed to assess the effect of flow reduction, the main effect of droughts on streams. We collected pre-manipulation data from October 2016 to September 2017, when Hurricanes Irma and Maria hit Puerto Rico. The project became a hurricane impact assessment from September 2017 to early 2021, when the flow reduction is scheduled to start. Since pools and riffles are always the same, measurements allow to assess changes in canopy over time and in response to experimental and natural disturbances.