Pollen profile of sediment core BK-8 ...

• Main Authors: Zimmermann, Heike Hildegard, Raschke, Elena, Epp, Laura Saskia, Stoof-Leichsenring, Kathleen Rosmarie, Schwamborn, Georg, Schirrmeister, Lutz, Overduin, Pier Paul, Herzschuh, Ulrike
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: DEPTH, sediment/rock; Alnus fruticosa-type; Betula sect. Nanae; Betula sect. Albae; Larix; Pinus subgen. Haploxylon-type; Picea; Pinaceae undifferentiated; Pinus subgen. Diploxylon-type; Pinus; Tilia; Cedrus; cf. Juglans; Ulmus; Salix; Apiaceae; Artemisia; Asteraceae; Brassicaceae; Descurainia; Caryophyllaceae; Chenopodiaceae; Cichoriaceae; Cyperaceae; cf. Dryas; Ericales; Fabaceae; cf. Hippuris; Gentianaceae; Geranium; Juncaceae; Indeterminata; Lamiaceae; Liliaceae; cf. Novosieversia; Onagraceae; Papaveraceae; cf. Parnassia; cf. Pedicularis; Poaceae; Polemonium; Polygonum viviparum-type; Polygonaceae; Primulaceae; Pyrolaceae; Ranunculaceae; Potentilla; cf. Comarum; Rosaceae; cf. Rubus chamaemorus; Ice; permafrost; Polygonum viviparum; Rubus chamaemorus; Siberia
• Online Access: https://dx.doi.org/10.1594/pangaea.870897; https://doi.pangaea.de/10.1594/PANGAEA.870897

Organic matter deposited in ancient, ice-rich permafrost sediments is vulnerable to climate change and may contribute to the future release of greenhouse gases; it is thus important to get a better characterization of the plant organic matter within such sediments. From a Late Quaternary permafrost sediment core from the Buor Khaya Peninsula, we analysed plant-derived sedimentary ancient DNA (sedaDNA) to identify the taxonomic composition of plant organic matter, and undertook palynological analysis to assess the environmental conditions during deposition. Using sedaDNA, we identified 154 taxa and from pollen and non-pollen palynomorphs we identified 83 taxa. In the deposits dated between 54 and 51 kyr BP, sedaDNA records a diverse low-centred polygon plant community including recurring aquatic pond vegetation while from the pollen record we infer terrestrial open-land vegetation with relatively dry environmental conditions at a regional scale. A fluctuating dominance of either terrestrial or swamp and ... : Supplement to: Zimmermann, Heike Hildegard; Raschke, Elena; Epp, Laura Saskia; Stoof-Leichsenring, Kathleen Rosmarie; Schwamborn, Georg; Schirrmeister, Lutz; Overduin, Pier Paul; Herzschuh, Ulrike (2017): Sedimentary ancient DNA and pollen reveal the composition of plant organic matter in Late Quaternary permafrost sediments of the Buor Khaya Peninsula (north-eastern Siberia). Biogeosciences, 14(3), 575-596 ...