Using Uncrewed Aerial Systems (UAS) to Assess Oyster Reefs to Inform Management and Restoration скачать в хорошем качестве

Using Uncrewed Aerial Systems (UAS) to Assess Oyster Reefs to Inform Management and Restoration

March 18, 2025 - In the southeastern U.S., intertidal oyster (Crassostrea virginica) reefs are primarily managed by state agencies in support of recreational and commercial fisheries, as well as for their ecosystem services. Oyster resource managers and NERR staff often rely on conventional on-the-ground monitoring approaches to inform management and restoration decisions, but these approaches have limitations in that they are time consuming and are of limited spatial scale. In response to users' needs for rapid, standardized and quantitative measures to assess reef condition – which directs management and restoration actions – this project evaluated uncrewed aerial systems (UAS) as a tool for measuring reef changes within five National Estuarine Research Reserves (NERRs) from North Carolina to Florida. The imagery analysis workflows developed in partnership with oyster resource managers provide quantitative measures of reef structural and demographic metrics and, importantly, changes to those metrics in response to natural and anthropogenic factors. Speakers: Peter Kingsley-Smith, South Carolina Department of Natural Resources Brandon Puckett, NOAA National Centers for Coastal Ocean Science Justin Ridge, North Carolina National Estuarine Research Reserve View resources related to the webinar: https://nerrssciencecollaborative.org... Learn more about the project and explore associated resources: https://nerrssciencecollaborative.org... Join our mailing list for updates: http://eepurl.com/gijKMz -- 00:00 - Intro and housekeeping 03:01 - Context and management need 06:47 - Metrics associated with reef condition 09:31 - Project objectives 10:25 - Oyster reef remote sensing 13:37 - Methods: In situ sampling and lab processing 15:25 - Methods: Drone sampling and image processing 18:21 - Results: Reef elevation 22:08 - Results: Rugosity (structural complexity) 27:57 - Results: Reef footprint 32:20 - Results: Percent cover of live oysters 36:27 - Results: Volumetric change 40:24 - Results: Density 44:58 - Bonus results: Cost comparison 48:10 - Conclusions 50:45 - Next steps 52:54 - Q&A