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Chemical Studies of Superficial Sediments in Lake Lilla Ullevifjärden
Author(s) -
Ryding SvenOlof,
Borg Hans
Publication year - 1976
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.3510610503
Subject(s) - sediment , sampling (signal processing) , geology , character (mathematics) , point (geometry) , volume (thermodynamics) , mineralogy , paleontology , mathematics , geometry , computer science , physics , filter (signal processing) , quantum mechanics , computer vision
Many sampling stations are preferable in sediment investigations. With a basis of only single samples an unequivocal determination of the lake's sediment character is hard to obtain. Knowledge of the morphometrical conditions is an advantage, as in steeply sloping parts great changes in concentrations can occur. However, even unexpected distribution patterns can emerge and a map of horizontal distributions in sediments can never be looked upon as completely reliable. The traditional sediment picture (based on dry weight) with increasing concentrations of several elements with depth can often give a false impression of the distribution of amounts per volume wet sediment with maximum values in somewhat shallower parts which, from an ecological point of view, should be the important one.