Flat-plate techniques for measuring reflectance of macro-algae (Ulva curvata)
International Journal of Remote Sensing
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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.
Suggested Citation
Ramsey, E., Rangoonwala, A., Thomsen, M.S., Schwarzschild, A., 2012, Flat-plate techniques for measuring reflectance of macro-algae (Ulva curvata): International Journal of Remote Sensing, v. 33, no. 10, p. 3147-3155, https://doi.org/10.1080/01431161.2011.633124.
| 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 |
| Publication Date | November 11, 2011 |
| 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 |