Yellow Substance (Gelbstoff) and its Contribution to the Attenuation of Photosynthetically Active Radiation in some Inland and Coastal South-Eastern Australian Waters | Health & Environmental Research Online (HERO)

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Citation
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HERO ID

6447904

Reference Type

Journal Article

Title

Yellow Substance (Gelbstoff) and its Contribution to the Attenuation of Photosynthetically Active Radiation in some Inland and Coastal South-Eastern Australian Waters

Author(s)

Kirk, J

Year

1976

Abstract

The absorption spectra relative to distilled water of samples from various inland and coastal waters in south-eastern Australia (lake, reservoir, river and bay) have been measured. Amongst the freshwater samples the level of dissolved yellow substance (gelbstoff) was found to vary seven-fold; in coastal water the concentration was much lower than in any of the freshwater samples. In the inland waters yellow substance has a dominating influence on light penetration, and the blue region of the spectrum is abolished at quite moderate depths. In all cases except seawater it was calculated that most of the quanta captured are absorbed by yellow substance rather than by water. An alternative name, gilvin, is suggested for the yellow pigments in natural waters. (CSIRO)

Keywords

; Pigments; Light penetration; Photosynthesis; Australia; Aquatic environment; Freshwater; Sea water; Light quality; Lakes; Reservoirs; Bays; Rivers; Water pollution effects/