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Free Content Biomass and photosynthetic responses to irradiance by a shallow and a deep water population of Thalassia testudinum on the west coast of Florida

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Abstract:

Short shoot density and blade width were significantly lower while chlorophyll a levels were significantly higher in a deep (6 to 8 m) Thalassia testudinum bed when compared to a (1 m) shallow bed. Although the above and below ground biomass was significantly higher in the shallow bed, there were no differences in the ratios of above to below ground portions of the cores or individual unit plants. No significant patterns in compensation point (Ic), saturation irradiance (Ik), and linear slope of the curve (α) were evident for plants from the deep and shallow water beds. The findings suggest an irradiance-depth limitation and that T. testudinum does not photoacclimate through shifts in P-I factors.

Document Type: Research Article

Publication date: 1998-01-01

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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