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Integrated Samples Provide Accurate Means of Parameters Characterizing Aquatic Ecosystems
Author(s) -
Vietinghoff Ulrich,
Erdmann Norbert,
Arndt Hartmut,
Kell Volkbert,
Hubert MarieLuise
Publication year - 1984
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.19840690114
Subject(s) - ecosystem , phytoplankton , sampling (signal processing) , sample (material) , environmental science , statistics , ecology , computer science , mathematics , biology , nutrient , chemistry , filter (signal processing) , chromatography , computer vision
The measurement of ecosystem parameters normally involves considerable effort in terms of sampling and analysis due to their variation in time and space. This contribution describes the advantages and properties of the integrated sample and demonstrates them by comparing the statistical properties of separate samples (number of Filinia longiseta per unit volume), and integrated sample (total chlorophyll a concentration) and phytoplankton samples analyzed by the Utermöhl method. A working hypothesis is presented to explain the causes of the overdispersion that hinders phytoplankton analysis and to suggest ways of eliminating it.