Flat-plate techniques for measuring reflectance of macro-algae (Ulva curvata)

International Journal of Remote Sensing
By: , and 

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Abstract

We tested the consistency and accuracy of flat-plate spectral measurements (400–1000 nm) of the marine macrophyte Ulva curvata. With sequential addition of Ulva thallus layers, the reflectance progressively increased from 6% to 9% with six thalli in the visible (VIS) and from 5% to 19% with ten thalli in the near infrared (NIR). This progressive increase was simulated by a mathematical calculation based on an Ulva thallus diffuse reflectance weighted by a transmittance power series. Experimental and simulated reflectance differences that were particularly high in the NIR most likely resulted from residual water and layering structure unevenness in the experimental progression. High spectral overlap existed between fouled and non-fouled Ulva mats and the coexistent lagoon mud in the VIS, whereas in the NIR, spectral contrast was retained but substantially dampened by fouling.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Flat-plate techniques for measuring reflectance of macro-algae (Ulva curvata)
Series title International Journal of Remote Sensing
DOI 10.1080/01431161.2011.633124
Volume 33
Issue 10
Year Published 2012
Language English
Publisher Taylor & Francis
Publisher location Philadelphia, PA
Contributing office(s) National Wetlands Research Center
Description 9 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title International Journal of Remote Sensing
First page 3147
Last page 3155