Evaluating Dissolved Inorganic Carbon Cycling in a Forested Lake Watershed Using Carbon Isotopes
Bibliographic Data
| ID | 9244382 |
|---|---|
| Authors | Ramon Aravena (0000-0003-2582-3639), S L Schiff, S E Trumbore, P J Dillon, Richard Elgood |
| Year | 1992 |
| Volume | 34 |
| Issue | 3 |
| Pages | 636-645 |
| Publication date | 1992-01-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Radiocarbon (JOURNAL) |
| Journal identifiers | ISSN: 0033-8222 • E-ISSN: 1945-5755 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/s003382220006392x |
| OpenAlex | W255634124 |
| Language | EN |
| Citations received | 1 |
| References cited | 24 |
Dissolved inorganic carbon (DIC) is the main acid buffer in forested lake watersheds in Canada. We used carbon isotopes ( 13 C, 14 C) to evaluate the production and cycling of DIC in an acid-sensitive lake watershed of the Precambrian Shield. Soil CO 2 , groundwater and stream DIC were characterized chemically and isotopically. Soil CO 2 concentration profiles reflect both changes in production and in losses due to diffusion. δ 13 C soil CO 2 profiles (δ 13 C values of −23‰ in summer, slightly enriched during the fall and −25%‰ during the winter) are a reflection of the isotopic composition of the sources and changes in isotopic fractionation due to diffusion. Carbon isotopic composition ( 13 C, 14 C) of the groundwater and stream DIC clearly indicate that weathering of silicates by soil CO 2 is the main source of DIC in these watersheds. 14 C data show that, in addition to recent groundwater, an older groundwater component with depleted 14 C activity is also present in the bedrock. The carbon isotope pattern in the groundwater also implies that, besides the main springtime recharge events, contributions to the groundwater may also occur during late winter/early spring
Bedrock · Carbon cycle · Carbon fibers · Dissolved organic carbon · Geochemistry · Geomorphology · Groundwater · Isotopes of carbon · Total organic carbon · Weathering · Chemistry · Environmental Science · Geology and Paleoclimatology Research · Groundwater and Isotope Geochemistry · Marine and coastal ecosystems · Ecology · Environmental Chemistry · Geology
Carbon isotopes in soils and palaeosols as ecology and palaeoecology indicators
The geochemistry of C14 in fresh-water systems
The stable isotopic composition of modern soil carbonate and its relationship to climate
Sources and Transformation of Dissolved Organic Carbon in the Harp Lake Forested Catchment
Annual Variations of the 14 C Content of Soil CO 2
Carbon-14 and Carbon-13 in Soil Co 2
Discussion Reporting of 14 C Data
| Unique citing works | 1 |
|---|---|
| Citations per year | 0,03 |
| Citation span | 1992 - 1992 (1) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 1 |