| Mitchell, MJ; Mayer, B; Bailey, SW; Hornbeck, J; Alewell, C; Dricsoll, CT; Likens, GE: Use of stable isotopes for evaluating sulfur sources and losses at the Hubbard Brook Experimental Forest, Water, Air and Soil Pollution, 130, 75-86 (2001) | |
| Abstract: Anthropogenic S emissions have been declining in eastern North America since the early 1970s. Declines in atmospheric S deposition have resulted in decreases in concentrations and fluxes of SO42- in precipitation and drainage waters. Recent S mass balance studies have shown that the Outflow Of SO42- in drainage waters greatly exceeds current S inputs from atmospheric deposition. Identifying the S source(s) which contribute(s) to the discrepancy in watershed S budgets is a major concern to scientists and policy makers because of the need to better understand the rate and spatial extent of recovery from acidic deposition. Results from S mass balances combined with model calculations and isotopic analyses of SO42- in precipitation and drainage waters at the Hubbard Brook Experimental Forest (HBEF) suggest that this discrepancy cannot be explained by either underestimates of dry deposited S or desorption of previously stored SO42-. Isotopic results suggest that the excess S may be at least partially derived from net mineralization of organic S as well as the weathering of S-bearing minerals. |
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| BayCEER Colloquium: |
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| Th. 2024-05-16 Dimethylated thioarsenates: potentially dangerous hidden arsenic species in rice and rice products |
| Dialog: |
| Fr. 2024-05-17 Forum Zukunftswald: Bodenvegetation: Erkennen und deren Bedeutung für den Waldbau |
| Ecological-Botanical Garden: |
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