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A Phytoplankton Bloom in Shallow Divor Reservoir (Portugal)—The Importance of Internal Nutrient Loading

✍ Scribed by Graça Cabeçadas; Maria J. Brogueira; Jörgen Windolf

Publisher: John Wiley and Sons
Year: 1986
Tongue: English
Weight: 583 KB
Volume: 71
Category: Article
ISSN: 1434-2944
DOI: 10.1002/iroh.19860710606

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✦ Synopsis

The development of a heavy phytoplankton bloom (chl. a=36@ mg/ma), which occurred in the summer 1983 in a shallow reservoir, Divor, is described. The study shows that remobilization of phosphate from the sediment was initiating the phytoplankton bloom. This was confirmed not only by calculations of the change in iron-phosphate pool, but aLo supported by sorption experiments carried out with the sediment. It is discussed that turbidity of the water due to suspended matter caused the reduction in standing stock of phytoplankton to approx. 50 mg chl. ajm3 in latesummer Contents

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