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Sediment oxygen demand: A review of in situ methods

January 17, 2019

Sediment oxygen demand (SOD) plays a fundamental role in biological and chemical processes within the benthic layer of a water body. Land use, including agricultural land use, can affect SOD. However, a wide variety of approaches have been used for in situ SOD chamber construction and data collection, and modelers frequently use SOD values from the literature, without consideration of the differences in methods. Here, we review existing literature on SOD chambers (32 papers, 1974–2016), compare the differences between in situ and laboratory methods, evaluate the effects of in situ chamber mixing, and discuss common challenges associated with deployment. A cohesive in situ sealed chamber design for use with a multiparameter water-quality instrument is presented as an effort toward standardizing SOD methodology, an important consideration that may facilitate integration of SOD data sets among multiple research efforts.

Publication Year 2019
Title Sediment oxygen demand: A review of in situ methods
DOI 10.2134/jeq2018.06.0251
Authors Erin N. Coenen, Victoria G. Christensen, Lynn Bartsch, Rebecca Kreiling, William B. Richardson
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of Environmental Quality
Index ID 70203149
Record Source USGS Publications Warehouse
USGS Organization Upper Midwest Water Science Center