short note
Kleine Mitteilung: Zur Beziehung Phytoplankton - Phosphat im Bodensee
[The relation between Phytoplankton and Phosphate in the Lake of Constance]
Lehn, Hubert
Archiv für Hydrobiologie Volume 70 Number 4 (1972), p. 556 - 559
7 references
published: Nov 9, 1972
DOI: 10.1127/archiv-hydrobiol/70/1972/556
ArtNo. ESP141007004006, Price: 29.00 €
Abstract
Since 1920 two criteria of water quality, the phosphatephosphorus-concentration at the full wintercirculation and the phytoplancton density the annual mean at 0—10 m depth of cells/ml, have increased greatly. In the half-logarithmic system of coordinates a straight line runs through the relative points, and this rises more in the shallow Gnadensee than in the deep Obersee. With increasing phosphat-concentration the efficiency on phytoplankton production in both basins of the lake decrease logarithmically.
Keywords
full wintercirculation • phytoplancton density • annual mean • phosphat-concentration • Gnadensee • Obersee • Lake of Constance