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

Document Type

Journal Article

Faculty

Faculty of Computing, Health and Science

School

School of Natural Sciences

RAS ID

15206

Comments

Ramsey, E., Rangoonwalaj, A., Thomsen, M. , & Schwarzschild, A. (2012). Spectral definition of the macro-algae ulva curvata in the back-barrier bays of the eastern shore of Virginia, USA. International Journal of Remote Sensing, 33(2), 586-603. Available here

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 (

DOI

10.1080/01431161.2010.543436

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