Nearshore Hardbottom Monitoring: Alternative Methods
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The document discusses alternative methods for monitoring nearshore hardbottom habitats in Florida to enhance efficiency and reduce costs related to beach restoration projects. It highlights technologies such as autonomous underwater mapping systems, unmanned surface vessels, and satellite imagery for habitat assessment and data collection. The use of advanced tools aims to improve quantitative and qualitative analyses while saving costs significantly in the monitoring process.
Nearshore Hardbottom Monitoring: Alternative Methods
- 1. Nearshore Hardbottom Monitoring: Alternative Methods to Effectively Assess Potential Impacts & Reduce Monitoring Costs Associated with Beach Restoration Projects in Florida CSA Ocean Sciences Inc.Erin Hodel, Keith VanGraafeiland, & Keith Spring FSBPA Beach Technology Conference Jacksonville, Florida February 13, 2013
- 2. From Quadrats to Quickbird…
- 4. Biological Monitoring of Hardbottom for Beach Restoration Projects 1. Nearshore hardbottom edge mapping. 2. Assessment of marine plants and animals via quadrats and/or video. 3. Sediment depth.
- 6. Dual Camera System Increases Efficiency Qualitative = Oblique View Quantitative = Planar View
- 7. Cost Saving Tools/New Technology 1. Shark Marine TM Navigator • Autonomous underwater mapping system. • Simultaneous collection of multiple data. • High resolution. • Small survey area. • Cost savings up to 20%.
- 8. Cost Saving Tools/New Technology 2. Unmanned Surface Vessel (USV) • Very shallow or hazardous conditions. • Interactive or autonomous operation. • Survey equipment: DGPS/RTK Side Scan Sub-bottom Bathymetry • Large survey area. • Cost savings ~50%.
- 9. County X County Y Very Fine Sand Fine Sand Medium Sand ETS Worldw ide Ltd Cost Saving Tools/New Technology 3. Sediment Tracers
- 10. 2011-2012 representative WV-2 satellite imagery coverage areas meeting criteria acceptable for benthic interpretation Indian River County to Martin County
- 11. Satellite Imagery Platforms (Suitable for Benthic Habitat Classification) • WordView-1 • WorldView-2 • QuickBird • Pleiades • IKONOS • Typical Resolution o 2-m multispectral o 50-cm panchromatic • 3- to 8-band Imagery Availability o Color (RGB) o Near-infrared o Coastal band Information courtesy of Digital Globe
- 12. Satellite Imagery Specifications (Suitable for Benthic Habitat Classification) • Imagery delivered within 48 to 72 hr • Collected regularly based on satellite orbit pattern • Can be tasked in advanced and in an emergency scenario • Typically covers entire project area within a single image capture • Opportunity to look at regional factors o Turbidity plumes o Inlets o Jetties/Structures • Limited to clear-water applications where aerial imagery is already accepted • Good way to perform a historical hardbottom analyses for potential data gap areas • Show conditions pre- and post-event (bracketing) • There is a minimum ordering size o Usually 100 sq. km for tasking o Usually 25 sq. km for archive • Does not meet tide and sun angle specifications for aerial collection • Some satellite platforms offer bathymetry derived from imagery • 20 to 30 m visibility/water surface penetration Information courtesy of Digital Globe
- 13. FT. PIERCE INLET 3/12/2012 SEBASTIAN INLET 2/13/2011
- 14. FT. PIERCE INLET 11/22/2012 ST. LUCIE INLET 11/22/2012
- 15. Acknowledgements