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Oxygen concentration profiles in soft sediment of Lake Baikal (Russia) near the Selenga delta
Author(s) -
MARTIN PATRICK,
GODDEERIS BOUDEWIJN,
MARTENS KOEN
Publication year - 1993
Publication title -
freshwater biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.297
H-Index - 156
eISSN - 1365-2427
pISSN - 0046-5070
DOI - 10.1111/j.1365-2427.1993.tb00768.x
Subject(s) - transect , epilimnion , sediment , bioturbation , delta , varve , geology , oxygen , oceanography , environmental science , hydrology (agriculture) , environmental chemistry , ecology , eutrophication , geomorphology , hypolimnion , nutrient , chemistry , biology , geotechnical engineering , organic chemistry , aerospace engineering , engineering
SUMMARY1 Microprofiles of oxygen concentration were made in soft sediments of Lake Baikal, along three transects near the Selenga delta. This is the first time the available oxygen in the sediment has been measured in this lake. 2 The microprofiles had a similar and typical shape (a single exception was possibly caused by bioturbation). A positive correlation was found between the sediment oxygen penetration depth (SOP) and the bathymetric depth of the epilimnion, probably caused by a decrease in oxygen sediment consumption with increasing depth. 3 The observed SOP values are generally very high, which is an indication of oligotrophy. A single low SOP value, observed in the northern transect, appears to be linked to organic pollution caused by the Selenga River.