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Limnology of a Warm Hypertrophic Wastewater Reservoir in Israel I. The Physical Environment
Author(s) -
Juanico Marcelo
Publication year - 1994
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.19940790311
Subject(s) - stratification (seeds) , limnology , ephemeral key , environmental science , wastewater , hydrology (agriculture) , thermal stratification , turbidity , oceanography , geology , environmental engineering , ecology , seed dormancy , botany , germination , geotechnical engineering , thermocline , dormancy , biology
This paper deals with stratification in a small reservoir (50 000 m 3 volume, 5.5 m depth) receiving wastewater with a BOD of 80 mg/1 during the winter in order to irrigate agricultural areas during the dry summer. The reservoir goes through three partially overlapping annual cycles: solar radiation, water temperature and reservoir operation. It presents both permanent (deep) and ephemeral (shallow) stratification during the summer in spite of the strong breeze, due to both thermal and biogenic chemical gradients. There are stratified and non‐stratified wastewater reservoirs in Israel. Stratification in hypertrophic impoundments seems to depend also on parameters derived from the chemical composition of hypertrophic waters. (e. g., turbidity, biogenic gradients, wind/water friction coefficient, viscosity).