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Determining the contribution of pigments and the nonalgal fractions to total absorption: Toward an improved algorithm
Author(s) -
Varela Ramiro A.,
Figueras Francisco G.,
Arbones Belén,
Agustí Susana
Publication year - 1998
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1998.43.3.0449
Subject(s) - particulates , absorption (acoustics) , fraction (chemistry) , chemistry , algorithm , environmental science , mathematics , analytical chemistry (journal) , environmental chemistry , physics , chromatography , optics , organic chemistry
Three methods that estimate the algal and nonalgal contributions to the total particulate matter light absorption were analyzed against the experimental Kishino method in a wide variety of environments. We found that one method gave better overall correlations and slopes closer to 1 than did the other methods, but the method overestimated the nonalgal fraction when the nonalgal absorption to total particulate matter absorption proportion in the sample was low. As a result, a correction is suggested and results are compared with those of the other methods, showing that the combined use of the original algorithm and the correction do configure a suitable basis for differentiating the algal and nonalgal fractions using as input only the total particulate light absorption data.