Introduction The hydrographical Significance of C:N ratios has been considered by a number of authors (Parsons and Strickland 1962, Provasoli 1963, Menzel and Ryther 1964, Trevaillon 1967, Flemmer and Biggs 1971, Quazim and Sankaranarayanan 1972, Banse 1974, and Fraga, in press), who have been concerned with the relationship between the levels of these elements in organisms and their recycling in aquatic habitats. Parsons et aL (1961) studied the organic composition of eleven planktonic algae cultured in the laboratory, and Mann (1972) has considered the C:N ratio äs related to phenological observations, Materials and Methods Twenty-four species of benthic algae were collected from intertidal rocks in Vigo Bay, N.W. Spain (Tab. 1). All collections were made during the last week of January, and were processed for analysis on the same day äs they were collected. The plants were dried at 80 °C for 3 hours, then ground manually to a homogeneous fine powder, and ultimately dried further at 100 °C. The dried and powdered samples were then introduced for combustion in a C, N, H, Perkin-Elmer 240 autoanalyzer. The accuracy of the analysis was verified byrunning known samples of glutamic acid and other amino acids (Fraga.m Press). The combustion
Botanica Marina – de Gruyter
Published: Jan 1, 1976
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