Carbon Uptake in Aquatic Plants Deduced From Their Natural 13C and 14C Content

Marčenko, Elena; Srdoč, Dušan; Golubić, Stjepko; Pezdič, Jože; Head, Martin J.

doi:10.1017/s0033822200012406

Cited by 45 publications

(20 citation statements)

References 18 publications

(26 reference statements)

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“…To reduce the likelihood of contamination by older carbon we preferred to use organic material reflecting atmospheric 14 C concentrations, such as seeds and fruits from terrestrial plants (e.g. Marcenko et al, 1989;Törnqvist et al, 1992). Pollen analysis and radiocarbon dating was performed on the same sediment cores, preferably also in combination with sedimentological analysis (compare Dambeck, 2005).…”

Section: Methodsmentioning

confidence: 99%

Palaeoenvironmental changes and vegetation history of the northern Upper Rhine Graben (southwestern Germany) since the Lateglacial

Bos

Dambeck

Kalis

et al. 2008

Netherlands Journal of Geosciences

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The vegetation of the northern Upper Rhine Graben (southwestern Germany) is reconstructed for the end of the Lateglacial and the Holocene by means of palynological analyses in combination with AMS 14c dating. Analogous to adjacent lowland areas, the Younger Dryas climatic deterioration did not result in a complete deforestation of the area and open pine woodlands with locally birch stands and shrubs persisted. A subdivision of the Younger Dryas period, into a humid first phase, followed by a dry second phase was also reflected in our records. For the Holocene, the pollen diagrams show two regionally different vegetation developments, related to substrate and variations in annual precipitation: in the south the ‘classical’ succession of pine then hazel is followed by other deciduous trees, whereas in the northern part, pine kept its dominance far into the Subboreal.

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Section: Methodsmentioning

confidence: 99%

Palaeoenvironmental changes and vegetation history of the northern Upper Rhine Graben (southwestern Germany) since the Lateglacial

Bos

Dambeck

Kalis

et al. 2008

Netherlands Journal of Geosciences

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“…Sample code no. HB1 HB3 HB4 GRC1 HB5 HB7 HB11 GRC2 GRC3 HB12 GRC4 IR1 Sample size 50 ml 50 ml 350 ml 0.5 kg 350 ml 50 ml 135 ml 0.1 kg 0.5 kg 500 ml V2 kg 200 ml Radiocarbon dates from bulk material or seeds and fruits from (semi-) aquatic plants, however, can reveal 14 C ages which are too old due to a 'hard water e¡ect' (Marcenko et al, 1989;To « rnqvist et al, 1992). Therefore, some of the Sourlie radiocarbon samples may have revealed 14 C ages that are too old.…”

Section: Radiocarbon Analysismentioning

confidence: 99%

Flora, fauna and climate of Scotland during the Weichselian Middle Pleniglacial – palynological, macrofossil and coleopteran investigations

Bos

Dickson

Coope

et al. 2004

Palaeogeography, Palaeoclimatology, Palaeoecology

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Thin lenses of organic-rich material, on the upper surface of a layer of glacio-fluvial deposits have been studied in an open cast coal-mine near Sourlie, western Scotland. Radiocarbon dates on antler fragments, plant debris and bulk organic matter from silt, showed that the sediments accumulated between ca. 33 500 and 29 000 14 C yr BP, during a period when this part of western Scotland was free of glaciers. The organic-rich sediments yielded a very rich flora and fauna and in total about 160 plant taxa and 61 coleopteran taxa were recorded together with other invertebrates. The Sourlie flora is one of the richest late Middle Weichselian floras yet studied within the British Isles. Leg bones of Coelodonta antiquitatis (woolly rhinoceros) and Rangifer tarandus (reindeer) were also found at the site. During this period, the landscape was treeless and the vegetation could be characterised as an intermediate between a low shrub tundra and sedge^grass^moss tundra. Both the flora and arthropod fauna suggest that during formation of the organic-rich layers at Sourlie, mean July temperatures were 9^10 ‡C. The flora suggests also that at the beginning of formation of these layers, minimum mean July temperatures increased from 7 to 9^10 ‡C, but later dropped again to 7^8 ‡C. A possible time correlation with one of the warmer periods of the Dansgaard^Oeschger cycles in the stable oxygen isotope record of the Greenland ice cores during this period is proposed. The arthropod fauna suggests that mean January temperatures were somewhere between 334 and 311 ‡C. Mean annual temperatures lay probably between 31 and 310 ‡C, which implies the possible presence of discontinuous or continuous permafrost in the area. During winter, a protective snow cover of varying thickness probably enabled perennial plants, especially shrubs, to survive. ß

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“…1B). Marcenko et al (1989) showed that submerged aquatic plants take CO2 Table 4 However, recent true aquatic plants collected before the bomb-test period can be used for Ao determination. The 14C activity of moss (Cratoneurum comrnutatum) (Z-857, Table 2) collected at Plitvice Lakes around 1920 and stored in the Zagreb Botanical Garden Museum, agrees very well with Ao calculated by using other methods described in this paper.…”

Section: Dating the Organic Component Of Sedimentmentioning

confidence: 99%

Experimental Determination of the ¹⁴C Initial Activity of Calcareous Deposits

et al. 1992

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ABSTRACT. We have reconstructed the initial activity of calcareous sediments by 1) measuring the '4C activity of recent pre-bomb-test calcareous deposits, 2) calculating the ratio of the 14C activity of the calcareous sediment to that of the adjacent coeval wood, and 3) extrapolating 14C activity of the deep lacustrine sediment layers to the surface, assuming a constant sedimentation rate. We show here that the uppermost sediment is affected by the global increase of atmospheric

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Carbon Uptake in Aquatic Plants Deduced From Their Natural 13C and 14C Content

Cited by 45 publications

References 18 publications

Palaeoenvironmental changes and vegetation history of the northern Upper Rhine Graben (southwestern Germany) since the Lateglacial

Palaeoenvironmental changes and vegetation history of the northern Upper Rhine Graben (southwestern Germany) since the Lateglacial

Flora, fauna and climate of Scotland during the Weichselian Middle Pleniglacial – palynological, macrofossil and coleopteran investigations

Experimental Determination of the ¹⁴C Initial Activity of Calcareous Deposits

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Carbon Uptake in Aquatic Plants Deduced From Their Natural 13C and 14C Content

Cited by 45 publications

References 18 publications

Palaeoenvironmental changes and vegetation history of the northern Upper Rhine Graben (southwestern Germany) since the Lateglacial

Palaeoenvironmental changes and vegetation history of the northern Upper Rhine Graben (southwestern Germany) since the Lateglacial

Flora, fauna and climate of Scotland during the Weichselian Middle Pleniglacial – palynological, macrofossil and coleopteran investigations

Experimental Determination of the 14C Initial Activity of Calcareous Deposits

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Experimental Determination of the ¹⁴C Initial Activity of Calcareous Deposits