Spectral definition of the macro-algae ulva curvata in the back-barrier bays of the eastern shore of Virginia, USA

Ramsey, E.; Rangoonwalaj, A.; Thomsen, M. S.; Schwarzschild, A.

Abstract:

We have developed methods to determine the visible (VIS) to near-infrared (NIR) spectral properties of thalli and epiphytes of bloom-forming and green macro-phyte Ulva curvata in back-barrier lagoons in Virginia, USA. A 2% increase in NIR thalli reflectance from winter to summer (ca. 9.5%) matched the drop in summer NIR transmittance (ca. 90%). In contrast, summer and winter VIS reflectance (reaching 6%) were nearly identical while winter transmittance (ca. 85%) was 10-20% higher. NIR absorption remained at 5% but VIS absorption increased by 10-20% from winter to summer. Replicate consistency substantiated the high transmittance difference indicating thallus composition changed from summer to winter. Epiphytes increased thallus reflectance (

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Article

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70032290

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Ramsey, E.; Rangoonwalaj, A.; Thomsen, M. S.; Schwarzschild, A.

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603

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English

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International Journal of Remote Sensing

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Spectral definition of the macro-algae ulva curvata in the back-barrier bays of the eastern shore of Virginia, USA; 2012; Article; Journal; International Journal of Remote Sensing; Ramsey, E.; Rangoonwalaj, A.; Thomsen, M. S.; Schwarzschild, A.