Elemental and isotopic measurements of macrophyte remains and raw sequence data in sediment core KK12-1, Lake Karakul, Pamir Mountains, Tajikistan ...

• Main Authors: Heinecke, Liv, Epp, Laura Saskia, Reschke, Maria, Stoof-Leichsenring, Kathleen Rosmarie, Mischke, Steffen, Plessen, Birgit, Herzschuh, Ulrike
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2017
• Subjects: Permafrost Research Periglacial Dynamics @ AWI AWI_PerDyn; Polar Terrestrial Environmental Systems @ AWI AWI_Envi; permafrost
• Online Access: https://dx.doi.org/10.1594/pangaea.877361; https://doi.pangaea.de/10.1594/PANGAEA.877361

Due to methodological challenges there are only a few studies that focus on macrophyte dynamics in large lakes despite their notable role in a lake's ecosystem functioning. This study investigates composition and productivity changes of the submerged vegetation of Lake Karakul, Pamir Mountains (Tajikistan), using sedimentary ancient DNA metabarcoding and elemental (C/N) and isotopic (d13C, d15N) measurements of Stuckenia cf. pamirica ((Baagøe) Z.Kaplan; Potamogetonaceae) leaf remains. No Stuckenia cf. pamirica leaf remains were found for 28.7 to 26.1 cal ka BP, when both Potamogetonaceae and Chara (L.) DNA sequences were recorded, suggesting sparse submerged vegetation at the coring site. This agrees with the inference of a deep lake reached using geochemical proxies. From 26.1 to 17.5 cal ka BP a few macrophyte remains and high numbers of Potamogetonaceae sequences were recovered: lake level was probably low, as suggested by other studies on the lake. Another phase of increased numbers of Chara sequences ... : Supplement to: Heinecke, Liv; Epp, Laura Saskia; Reschke, Maria; Stoof-Leichsenring, Kathleen Rosmarie; Mischke, Steffen; Plessen, Birgit; Herzschuh, Ulrike (2017): Aquatic macrophyte dynamics in Lake Karakul (Eastern Pamir) over the last 29 cal ka revealed by sedimentary ancient DNA and geochemical analyses of macrofossil remains. Journal of Paleolimnology, 58(3), 403-417 ...