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Mercury and Organic Carbon Relationships in Streams Draining Forested Upland/Peatland WatershedsAuthor(s): R. K. Kolka; D. F. Grigal; E. S. Verry; E. A. Nater
Source: Journal of Environmental Quality 28: 766-775
Publication Series: Scientific Journal (JRNL)
Station: North Central Research Station
PDF: Download Publication (1.25 MB)
DescriptionWe determined the fluxes of total mecury (HgT), total organic carbon (TOC), and dissolved organic carbon (DOC) from five upland/peatland watersheds at the watershed outlet. The difference between TOC and DOC was defined as particulate OC (POC). Concentrations of HgT showed moderate to strong relationships with POC (R2 = 0.77) when all watersheds were grouped. Although POC only accounts for 10 to 20% of the OC transported, we estimate that it is associated with 52 to 80% of the HgT transported from the five watersheds. Total transport of HgT from the watersheds ranged from 0.70 to 2.82 ?gm-2yr-1. Watershed geometry and hydrology play important roles in determining the influence of OC on HgT transport in forested watersheds. Watershed properties such as peatland area have considerable promise as predictors for estimating HgT transport in streams draining forested watersheds in the Great Lakes States
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CitationKolka, R. K.; Grigal, D. F.; Verry, E. S.; Nater, E. A. 1999. Mercury and Organic Carbon Relationships in Streams Draining Forested Upland/Peatland Watersheds. Journal of Environmental Quality 28: 766-775
- Mercury and Organic Carbon Relationships in Streams Draining Forested Upland/Peatland Watersheds
- Hydrologic cycling of mercury and organic carbon in a forested upland-bog watershed
- Measurement and importance of dissolved organic carbon. Chapter 13
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