The Varying Radiocarbon Activity of Some Recent Submerged Estonian Plants Grown in the Early 1990s
Bibliographic Data
| ID | 9242637 |
|---|---|
| Authors | Ingrid U Olsson, Enn Kaup |
| Year | 2001 |
| Volume | 43 |
| Issue | 2B |
| Pages | 809-820 |
| Publication date | 2001-01-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Radiocarbon (JOURNAL) |
| Journal identifiers | ISSN: 0033-8222 • E-ISSN: 1945-5755 |
| Publisher | Cambridge University Press (CUP) (PUBLISHER) |
| DOI | 10.1017/s0033822200041485 |
| OpenAlex | W331372991 |
| Language | EN |
| Citations received | 14 |
| References cited | 24 |
Eleven samples of aquatic plants from three Estonian lakes were analyzed for their radiocarbon content in a collaboration between the laboratories in Tallinn and Uppsala. δ 13 C values for the actual species were compiled to allow normalization of activities measured in Tallinn without δ 13 C values. The range for well determined species is usually a few per mil and the statistical uncertainty ≥1‰. δ 13 C values vary considerably for different Potamogéton species and Myriophýllum spp. Lake Äntu Sinijärv and Lake Päidre are hard-water lakes containing 300 and 200 mg HCO 3 – /L, respectively. One sample consisted of a carbonate crust deposited on a Ceratophýllum demersum plant in L. Äntu Sinijärv. Its Δ 14 C value was −147.3 ± 6.7‰ in 1990, whereas the plant had a value of −74.1 ± 8.0‰ (δ 13 C = −35.0‰). The same species in L. Päidre had a Δ 14 C value of +8.0 ± 8.8‰ (δ 13 C = −25.2‰) in 1992. Other species in L. Päidre contained more 14 C, from a Δ 14 C value of about +30‰ to about +155‰, the latter value measured in Tallinn on floating leaves of Nuphar lútea, close to that of the contemporaneous atmospheric CO 2 . In the third lake, Lake Punso, containing ≤30 mg HCO 3 – /L, the stems of Nuphar lútea exhibited in 1990 a memory effect: the activity, Δ 14 C = 209.6 ± 10.3‰, significantly exceeded that of the contemporaneous atmospheric CO 2 . However, the floating leaves of the same plant had the Δ 14 C value 143.1 ± 10.0‰, close to the atmospheric 14 C level in 1990. The memory is explained by nutrients stored in the root stock, used when the growth starts
Accelerator mass spectrometry · Aquatic plant · Biology · Botany · Carbonate · Ceratophyllum demersum · Macrophyte · Radiocarbon dating · Aquatic Ecosystems and Phytoplankton Dynamics · Chemistry · Geology and Paleoclimatology Research · Isotope Analysis in Ecology · Ecology · Environmental Chemistry · Horticulture
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| Citations per year | 0.58 |
|---|---|
| Citation span | 2002 - 2025 (24) |
| Highly cited | No |