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Wagner, Bernd; Bennike, Ole; Bos, Johanna A A; Cremer, Holger; Lotter, André F; Melles, Martin (2008): Sedimentology and paleontology on core Lz1104 from Lake Hjort, Greenland [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.760682, Supplement to: Wagner, B et al. (2008): A multidisciplinary study of Holocene sediment records from Hjort Sø on Store Koldewey, Northeast Greenland. Journal of Paleolimnology, 39(3), 381-398, https://doi.org/10.1007/s10933-007-9120-3

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Abstract:
Two sediment cores of 70 and 252 cm length were recovered from Hjort Sø, a small lake on Store Koldewey, Northeast Greenland, and studied with a multidisciplinary approach in order to reconstruct the local environmental history and to test the relevance of proxies for paleoenvironmental information. The basal sediments from the longer core are dominated by clastic matter, which was likely deposited during deglaciation of the lake basin. These clastic sediments are overlain by gyttja, which is also present throughout the shorter core. AMS radiocarbon dating was conducted on plant macrofossils of 11 samples from the gyttja in both cores. A reliable chronology was established for both cores, which dated the onset of organic accumulation at 9,500 cal. year BP. The Holocene temperature development, with an early to mid Holocene thermal maximum, is best reflected in the grain-size composition. Nutrient availability was apparently low during the early Holocene and led to low productivity in the lake and its vicinity. From ca. 7,000 cal. year BP, productivity in the lake increased significantly, probably induced by external nutrient input from goose excrements. From this time, micro- and macrofossil remains reflect relatively well the climate history of East Greenland, with a cooling during the middle Holocene, the medieval warming, and the Little Ice Age. The amount of organic matter in the sequence seems to be more affected by lake ice cover or by nutrient supply from the catchment than by temperature changes. The record from Hjort Sø thus reveals the difficulties in interpreting sedimentary records from high arctic regions.
Coverage:
Latitude: 76.433100 * Longitude: -18.761400
Date/Time Start: 2003-08-15T00:00:00 * Date/Time End: 2003-08-15T00:00:00
Event(s):
Lz1104 * Latitude: 76.433100 * Longitude: -18.761400 * Date/Time: 2003-08-15T00:00:00 * Elevation: 114.0 m * Lake water depth: 6.1 m * Location: Hjort Lake, central Store Koldewey, NE-Greenland * Campaign: GL-Land_2003_ EastGreenland (Greenland2003) * Basis: AWI Arctic Land Expedition * Method/Device: Gravity corer (Russian type) (RGC)
Lz1104-1 * Latitude: 76.433100 * Longitude: -18.761400 * Date/Time: 2003-08-15T00:00:00 * Lake water depth: 6.1 m * Recovery: 0.7 m * Location: Hjort Lake, central Store Koldewey, NE-Greenland * Campaign: GL-Land_2003_ EastGreenland (Greenland2003) * Basis: AWI Arctic Land Expedition * Method/Device: Gravity corer, UWITEC (GCUWI)
Lz1104-5 * Latitude: 76.433100 * Longitude: -18.761400 * Date/Time: 2003-08-15T00:00:00 * Elevation: 114.0 m * Lake water depth: 6.1 m * Recovery: 2.5 m * Location: Hjort Lake, central Store Koldewey, NE-Greenland * Campaign: GL-Land_2003_ EastGreenland (Greenland2003) * Basis: AWI Arctic Land Expedition * Method/Device: Gravity corer (Russian type) (RGC)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
9 datasets

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Datasets listed in this publication series

  1. Wagner, B; Bennike, O; Bos, JAA et al. (2008): Table 3 Ecological indicator values for the trophic state of the most abundant diatom species in core Lz1104. https://doi.org/10.1594/PANGAEA.760675
  2. Wagner, B; Bennike, O; Bos, JAA et al. (2008): Diatom assemblage in core Lz1104. https://doi.org/10.1594/PANGAEA.760678
  3. Wagner, B; Bennike, O; Bos, JAA et al. (2008): Table 2 Lithological description of core Lz1104-5 from Hjort Sø. https://doi.org/10.1594/PANGAEA.760674
  4. Wagner, B; Bennike, O; Bos, JAA et al. (2008): Table 1 Radiocarbon dates of cores Lz1104-1 and Lz1104-5 from Hjort Sø. https://doi.org/10.1594/PANGAEA.760673
  5. Wagner, B; Bennike, O; Bos, JAA et al. (2008): Fig. 8 (a) Bulk sedimentology of core Lz1104-1. https://doi.org/10.1594/PANGAEA.760680
  6. Wagner, B; Bennike, O; Bos, JAA et al. (2008): Fig. 8 (c) Diatom trophic groups in core Lz1104-5. https://doi.org/10.1594/PANGAEA.760679
  7. Wagner, B; Bennike, O; Bos, JAA et al. (2008): Fig. 7 (right) Macrofossil concentrations in core Lz1104-5. https://doi.org/10.1594/PANGAEA.760677
  8. Wagner, B; Bennike, O; Bos, JAA et al. (2008): Fig. 7 (left) Selected pollen taxa in core Lz1104-5. https://doi.org/10.1594/PANGAEA.760676
  9. Wagner, B; Bennike, O; Bos, JAA et al. (2008): Fig. 8 (b) Bulk sedimentology of core Lz1104-5. https://doi.org/10.1594/PANGAEA.760681