Young, Old, and Weathered Carbon—Part 2
Using Radiocarbon and Stable Isotopes to Identify Terrestrial Carbon Support of the Food Web in an Alkaline, Humic Lake
Bibliographic Data
| ID | 9244388 |
|---|---|
| Authors | Evelyn M Keaveney (0000-0002-1726-4446), Paula J Reimer (0000-0001-9238-2146), Robert H Foy |
| Year | 2015 |
| Volume | 57 |
| Issue | 3 |
| Pages | 425-438 |
| Publication date | 2015-01-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Radiocarbon (JOURNAL) |
| Journal identifiers | ISSN: 0033-8222 • E-ISSN: 1945-5755 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.2458/azu_rc.57.18355 |
| OpenAlex | W2051791554 |
| Language | EN |
| Citations received | 9 |
| References cited | 61 |
Carbon (C) and nitrogen (N) stable isotope analysis (SIA) has been used to identify the terrestrial subsidy of freshwater food webs. However, SIA fails to differentiate between the contributions of old and recently fixed terrestrial C and consequently cannot fully determine the source, age, and biochemical quality of terrestrial carbon. Natural abundance radiocarbon (Δ 14 C) was used to examine the age and origin of carbon in Lower Lough Erne, Northern Ireland. 14 C and stable isotope values were obtained from invertebrate, algae, and fish samples, and the results indicate that terrestrial organic C is evident at all trophic levels. High winter δ 15 N values in calanoid zooplankton (δ 15 N = 24‰) relative to phytoplankton and particulate organic matter (δ 15 N = 6‰ and 12‰, respectively) may reflect several microbial trophic levels between terrestrial C and calanoid invertebrates. Winter and summer calanoid Δ 14 C values show a seasonal switch between autochthonous and terrestrial carbon sources. Fish Δ 14 C values indicate terrestrial support at the highest trophic levels in littoral and pelagic food webs. 14 C therefore is useful in attributing the source of carbon in freshwater in addition to tracing the pathway of terrestrial carbon through the food web
Biology · Carbon dioxide · Carbon fibers · Ecosystem · Food web · Isotope analysis · Isotopes of carbon · Nutrient · Organic matter · Pelagic zone · Phytoplankton · Stable isotope ratio · Terrestrial ecosystem · Terrestrial plant · Total inorganic carbon · Total organic carbon · Trophic level · Zooplankton · δ13C · δ15N · Chemistry · Environmental Science · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Marine and coastal ecosystems · Ecology · Environmental Chemistry
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Young, Old, and Weathered Carbon-Part 1
Tracing the source of dissolved organic carbon in rivers by carbon isotope (Δ14C-δ13C)
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Carbon Isotopes as Tracers of Organic and Inorganic Carbon in Baltic Sea Sediments
Multi-Substrate Radiocarbon Data Constrain Detrital and Reservoir Effects in Holocene Sediments of the Great Salt Lake, Utah
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The geochemistry of C14 in fresh-water systems
The Natural C 14 Contents of Materials From Hard-Water Lakes
Understanding the variability in freshwater radiocarbon reservoir offsets
AMS 14C Measurements of Fractionated Soil Organic Matter
Temporal and Spatial Variations in Freshwater 14 C Reservoir Effects
Reservoirs and Radiocarbon
The Tropospheric 14 CO 2 Level in Mid-Latitudes of the Northern Hemisphere (1959–2003)
Discussion Reporting of 14 C Data
| Citations per year | 0.82 |
|---|---|
| Citation span | 2015 - 2025 (11) |
| Highly cited | No |