Organic carbon burial in lakes and reservoirs of the conterminous United States
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Abstract
Organic carbon (OC) burial in lacustrine sediments represents an important sink in the global carbon cycle; however, large-scale OC burial rates are poorly constrained, primarily because of the sparseness of available data sets. Here we present an analysis of OC burial rates in water bodies of the conterminous U.S. (CONUS) that takes advantage of recently developed national-scale data sets on reservoir sedimentation rates, sediment OC concentrations, lake OC burial rates, and water body distributions. We relate these data to basin characteristics and land use in a geostatistical analysis to develop an empirical model of OC burial in water bodies of the CONUS. Our results indicate that CONUS water bodies sequester 20.8 (95% CI: 9.4–65.8) Tg C yr–1, and spatial patterns in OC burial are strongly influenced by water body type, size, and abundance; land use; and soil and vegetation characteristics in surrounding areas. Carbon burial is greatest in the central and southeastern regions of the CONUS, where cultivation and an abundance of small water bodies enhance accumulation of sediment and OC in aquatic environments.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Organic carbon burial in lakes and reservoirs of the conterminous United States |
| Series title | Environmental Science & Technology |
| DOI | 10.1021/acs.est.5b00373 |
| Volume | 49 |
| Issue | 13 |
| Year Published | 2015 |
| Language | English |
| Publisher | American Chemical Society |
| Publisher location | Easton, PA |
| Contributing office(s) | Colorado Water Science Center, Toxic Substances Hydrology Program, National Research Program - Central Branch |
| Description | 9 p. |
| First page | 7614 |
| Last page | 7622 |
| Country | United States |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |