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Greenhouse gas fluxes of a shallow lake in south-central North Dakota, USA

June 13, 2016

Greenhouse gas (GHG) fluxes of aquatic ecosystems in the northern Great Plains of the U.S. represent a significant data gap. Consequently, a 3-year study was conducted in south-central North Dakota, USA, to provide an initial estimate of GHG fluxes from a large, shallow lake. Mean GHG fluxes were 0.02 g carbon dioxide (CO2) m−2 h−1, 0.0009 g methane (CH4) m−2 h−1, and 0.0005 mg nitrous oxide (N2O) m−2 h−1. Fluxes of CO2 and CH4 displayed temporal and spatial variability which is characteristic of aquatic ecosystems, while fluxes of N2O were consistently low throughout the study. Comparisons between results of this study and published values suggest that mean daily fluxes of CO2, CH4, and N2O fromLong Lakewere low, particularly when compared to the well-studied prairie pothole wetlands of the region. Similarly, cumulative seasonal CH4 fluxes, which ranged from 2.68–7.58 g CH4 m−2, were relatively low compared to other wetland systems of North America. The observed variability among aquatic ecosystems underscores the need for further research.

Publication Year 2016
Title Greenhouse gas fluxes of a shallow lake in south-central North Dakota, USA
DOI 10.1007/s13157-016-0782-3
Authors Brian Tangen, Raymond Finocchiaro, Robert A. Gleason, Charles F. Dahl
Publication Type Article
Publication Subtype Journal Article
Series Title Wetlands
Index ID 70173820
Record Source USGS Publications Warehouse
USGS Organization Northern Prairie Wildlife Research Center