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A bioassay study of effects of zooplankton, iron and NTA on the phytoplankton productivity of a marl lake

✍ Scribed by Stuart F. Mitchell; Robert G. Wetzel

Publisher: Springer
Year: 1980
Tongue: English
Weight: 343 KB
Volume: 68
Category: Article
ISSN: 1573-5141
DOI: 10.1007/bf00018832

No coin nor oath required. For personal study only.

✦ Synopsis

Additions of iron and NTA had minor stimulatory effects on the phytoplankton productivity of samples of water from two calcareous Michigan lakes in autumn and winter contrary to effects at other seasons . Added Daphnia pulex significantly reduced phytoplankton productivity by grazing at this time of year, in all tests at all levels of addition from 4-32 animals/ 1, greatly in excess of any possible beneficial effects of increased nutrient availability .

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