Diurnal Fluctuation in Photosynthetic Rate and Chlorophyll “a” Content of Phytoplankton from Eastern Pacific Waters | Zendy

SHIMADA BELL M. | Zendy

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Diurnal Fluctuation in Photosynthetic Rate and Chlorophyll “a” Content of Phytoplankton from Eastern Pacific Waters

Author(s) -

SHIMADA BELL M.

Publication year - 1958

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.1958.3.3.0336

Subject(s) - photosynthesis , phytoplankton , chlorophyll a , chlorophyll , oceanography , environmental science , diurnal temperature variation , biology , botany , atmospheric sciences , geology , ecology , nutrient

Measurements were made of photosynthetic activity and chlorophyll “a” content of phytoplankton samples taken at regular intervals over a 46‐hour period in May 1957, from surface waters near Clarion Island in the eastern Pacific Ocean. Results confirm previous observations of a diurnal periodicity in photosynthesis which, in this particular instance, appears to be correlated with variations in chlorophyll content. The photosynthesis‐chlorophyll relationship gives an estimated value of 4.24 mg C/hr per mg of chlorophyll “a” at a light intensity of 1000 foot‐candles.

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