Algal use of sedimentary phosphorus from an Amazon floodplain lake: Implications for total phosphorus analysis in turbid waters | Zendy

Engie Diana L. | Zendy; Sarnelle Orlando | Zendy

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Algal use of sedimentary phosphorus from an Amazon floodplain lake: Implications for total phosphorus analysis in turbid waters

Author(s) -

Engie Diana L.,

Sarnelle Orlando

Publication year - 1990

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.1990.35.2.0483

Subject(s) - selenastrum , phosphorus , floodplain , turbidity , environmental chemistry , amazon rainforest , environmental science , particulates , algae , sediment , chemistry , hydrology (agriculture) , botany , ecology , geology , biology , geotechnical engineering , organic chemistry , paleontology

Chemical forms of P and their availabilities to Selenastrum capricornutum were measured in sediments collected from Lago Calado, an Amazon floodplain lake. Postbioassay analysis confirmed that Selenastrum used ∼60– 70% of the P in the NaOH‐extracted fraction during a 9‐d incubation. No evidence for algal use of Ca‐bound P or organic P was found. Methodological comparisons revealed that persulfate digestion may not adequately recover algal‐available particulate P in waters high in inorganic turbidity. An average of 26% of the agal‐available P in Amazon River water was in particulate form.

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