1 / 4

NDVI can provide optical estimates of kelp abundance

Spectra obtained from airborne inaging spectrometers are similar to lab measures of individual kelp blade reflectances:. NDVI can provide optical estimates of kelp abundance. Macrocystis pyrifera (giant kelp) NPP = 14.7 x Standing Crop.

tana-weeks
Download Presentation

NDVI can provide optical estimates of kelp abundance

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Spectra obtained from airborne inaging spectrometers are similar to lab measures of individual kelp blade reflectances: NDVI can provide optical estimates of kelpabundance ERF 2007 International Conference Providence, RI

  2. Macrocystis pyrifera (giant kelp) NPP = 14.7 x Standing Crop • Converting NDVI into absolute kelp abundance and productivity: • Optical BAI = NDVI/0.71 • True BAI = Optical BAI * 9.04 • Biomass = True BAI/13.3 • Productivity = Biomass * 14.7 ERF 2007 International Conference Providence, RI

  3. Carmel Bay Santa Barbara Coastal LTER ERF 2007 International Conference Providence, RI

  4. Kelp Density (Kg DW m-2) 0.54 – 0.61 0.62 - 0.68 0.69 – 0.75 0.75 – 0.82 0.83 – 0.88 0.89 – 0.95 Kelp Productivity (g DW m-2 d-1) 8 – 9 9.1 – 10 10.1 – 11 11.1 – 12 12.1 – 13 13.1 - 14 NDVI Derived Density and Productivity of Giant Kelp: Carmel Bay November 2004 • 15 Km of irregular coastline • 1.7 Km2 of kelp canopy • Biomass: 1400 metric tons dry kelp biomass • NPP: 19 metric tons dry biomass d-1 ERF 2007 International Conference Providence, RI

More Related