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Rivers; gross primary production; ecosystem respiration; carbon spiraling; gas exchange; ecosystem metabolism
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Full-Text Articles in Biology
Metabolism, Gas Exchange, And Carbon Spiraling In Rivers, Robert O. Hall Jr, Jennifer L. Tank, Michelle A. Baker, Emma J. Rosi-Marshall, Erin R. Hotchkiss
Metabolism, Gas Exchange, And Carbon Spiraling In Rivers, Robert O. Hall Jr, Jennifer L. Tank, Michelle A. Baker, Emma J. Rosi-Marshall, Erin R. Hotchkiss
Biology Faculty Publications
Ecosystem metabolism, that is, gross primary productivity (GPP) and ecosystem respiration (ER), controls organic carbon (OC) cycling in stream and river networks and is expected to vary predictably with network position. However, estimates of metabolism in small streams outnumber those from rivers such that there are limited empirical data comparing metabolism across a range of stream and river sizes. We measured metabolism in 14 rivers (discharge range 14ā84 m3 sā1) in the Western and Midwestern United States (US). We estimated GPP, ER, and gas exchange rates using a Lagrangian, 2-station oxygen model solved in a Bayesian framework. GPP ranged from ā¦