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Physiological Section

Thorhaug, Anitra [1].

Spectral Reflectance of Red, Brown and Green Temperate Algae Compared with Tropical Algae and Seagrasses.

An array of temperate macroalgae (three phyla) were measured by spectral reflectance. Macroalgae were taken from north-shore of far-eastern Long Island Sound. This included Enteromorpha lindula, Codium fragile, Porphyra leucastica, Grennellia americana, Palmaria palmata, Fucus vesiculosus, Laminaria saccharina, and Ascophyllum nodosum. The spectral signatures herein are compared to other important habitat estuarine plants (Thorhaug and Berlyn, 2002) four seagrasses, plus red and green subtropical/tropical macroalgae. Temperate and subtropical/tropical green algal signatures generally resemble the seagrasses although they have distinct peak and trough heights, and slightly red edge. The brown and red macroalgae have distinctly different signatures from one another and from the greens. Generally, although individual species can be ascertained, the browns appear similar in spectral curve shape to one another. This data will add to physiological baseline studies and to libraries of remote sensing species data being compiled around the world for mapping nearshore shallow marine habitat plantdistribution.

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1 - Yale University School of Forestry & Environmental Studies, 1359 SW 22 TER, Miami, Florida, 33145, USA

Spectral reflectance.

Presentation Type: Oral Paper
Session: 7-5
Location: 408/Hilton
Date: Monday, August 15th, 2005
Time: 10:30 AM
Abstract ID:48

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