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Besonderheiten bei der Ermittlung der Primärproduktion in der Elbe aus Sauerstoff‐Ganglinien. Some Particularities in Estimating Primary Productivity in the River Elbe Using Oxygen Time Curves
Author(s) -
Böhme Michael
Publication year - 1991
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19910760204
Subject(s) - primary productivity , productivity , environmental science , mathematics , ecology , biology , ecosystem , economics , macroeconomics
The phytoplanktonic primary production was estimated in the River Elbe (average flow 325 m 3 /s) by ODUM 's twin and single curve analysis of changes in the oxygen content (1‐ and 2‐ SGA). The results were affected by the severe and varying waste water load and the non‐uniform conditions along the upstream river stretch. It is shown how the gross primary productivity was corrected by using the photosynthesis‐light‐relationship. At favourable measuring sites, single curve analysis gives similar values as ODUM 's twin curve method. But they scatter more when applied to establish the photsynthesis‐light‐relationship.