Spartina alterniflora
The Point: You can monitor the entire marsh!
Why are we doing this? • Threaten by anthropogenic and climate change forces • • • •
Vegetation composition Biomass Ground cover Hydrological systems
• Baselines for • Policy creation and modification • Restoration objectives • Management efforts
Drones are: • Low‐cost • Efficient • High resolution • Easily deployed • Easily repeatable
Drones and Photogrammetry • DJI Phantom 3 Advanced • Sentera NIR modified camera
www.mapsmadeeasy.com
Google Earth Image
• Spartina alterniflora (smooth cordgrass, tall/short form) • Juncus roemerianus (needle rush) • Spartina patens (salt marsh hay) • Iva frutescens (marsh elder) • Senecio congestus (groundsel)
Google Earth Image
• • • • •
Study Site: Canary Creek Marsh Homogeneous patches of veg species Aerial coverage of 0.03 km2 995 RGB images 603 NIR images
Google Earth Image
40m nadir
20m nadir
Marsh elder Tall form S. alterniflora
10m oblique
10m nadir
e) NIR
Ground Truthing
Results
85% agreement
Additional Data Products NDVI
Next steps and future work • Supervised and unsupervised classifications • Salt pan bacterial mats • Pre‐emptive identification of pooling due to grass die off (circular patterns) • Surface water quantification • Quantify flow with frequent surveys (hydrodynamic processes)
Thank you! Dr. Doug Miller Thaowan Giorno Ellie Rothermel NSF REU program DESG funding: 2016‐ 18 RRCE‐8
References
Why are we doing this? • Threaten by anthropogenic and climate change forces • • • •
Vegetation composition Biomass Ground cover Hydrological systems
• Baselines for • Policy creation and modification • Restoration objectives • Management efforts
Drones are: • Low‐cost • Efficient • High resolution • Easily deployed • Easily repeatable
Drones and Photogrammetry • DJI Phantom 3 Advanced • Sentera NIR modified camera
www.mapsmadeeasy.com
Google Earth Image
• Spartina alterniflora (smooth cordgrass, tall/short form) • Juncus roemerianus (needle rush) • Spartina patens (salt marsh hay) • Iva frutescens (marsh elder) • Senecio congestus (groundsel)
Google Earth Image
• • • • •
Study Site: Canary Creek Marsh Homogeneous patches of veg species Aerial coverage of 0.03 km2 995 RGB images 603 NIR images
Google Earth Image
40m nadir
20m nadir
Marsh elder Tall form S. alterniflora
10m oblique
10m nadir
e) NIR
Ground Truthing
Results
85% agreement
Additional Data Products NDVI
Next steps and future work • Supervised and unsupervised classifications • Salt pan bacterial mats • Pre‐emptive identification of pooling due to grass die off (circular patterns) • Surface water quantification • Quantify flow with frequent surveys (hydrodynamic processes)
Thank you! Dr. Doug Miller Thaowan Giorno Ellie Rothermel NSF REU program DESG funding: 2016‐ 18 RRCE‐8
References
