mapping terrestrial and benthic habitat change to address ... · march 2019 end-user update....
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Mapping terrestrial and benthic habitat change to address mangrove and seagrass migration and die-off in response to recent and long-term drivers
Dr. Matt McCarthy
March 2019 End-User Update
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WorldViewGeographic Coverage
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Landsat Geographic Coverage
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WorldView Landsat
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WorldView Landsat
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WorldView Landsat
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WorldView Landsat
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WorldView:Irma Damage
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WorldView:Irma Damage Recovery
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January 2017
January 2018
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WorldViewDecember 2017
WorldViewMarch 2018
Recovery• Some mangrove
rebound• Some mangrove die-off
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LandsatDecember 2017
LandsatMarch 2018
Recovery• Some mangrove
rebound
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WorldView:Irma Damage Recovery
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Challenges
• Seagrass• Turbidity obscuring accurate benthic classification
• Manually mapping Sentinel imagery
• Hydrology• 2007 = only reserve-wide Lidar
• 2018 Lidar release TBD• Supplement with WV-derived elevation if necessary
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Next steps:
• Accuracy assessments
• Change detection
• Change attribution• Areas of mangrove die-off
• Maerl overwash starving mangroves
• Sea level rise inundating low-lying areas more frequently• Lowest mean sea-level 2010-2017 = 40% higher than 1966-2017 average
• Highest mean sea-level rise 1966-1998 = 2 mm/yr
• Highest mean sea-level rise 1998-2017 = 7 mm/yr
• Hydrology