Growth Response of Halophila engelmanni Aschers. to Sulfide, Copper, and Organic Nitrogen in Marine Sediments.
Growth response of the seagrass Halophila engelmanni Aschers. was studied using defined culture techniques. When added to the rhizosphere, nutrient-seawater medium supported vigorous plant growth, if substantial Cu (10 times that in modified Hoagland solution) plus organic N were present. H(2)S up to 0.2 millimolar in the sediment was not inhibitory. A requirement for exogenous organic N, especially urea, is postulated for vigorous growth of Halophila.
Pulich
W M
WM
The University of Texas at Austin, Marine Science Institute, Port Aransas, Texas 78373.