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Moreno-Gonzalez, Ricardo; Giesecke, Thomas; Fontana, Sonia L (2020): Pollen and macro-charcoal analysis of Lake Relem sediment core, northern Patagonia [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.923741

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Published: 2020-10-07 • DOI registered: 2021-08-14

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Abstract:
We present palaeoecological records of pollen and macro-charcoal particles used to reconstruct the vegetation and fire history of the Araucaria araucana forest close to the steppe.
We obtained the core from a small lake (<1ha, surface) located in 38°58'39"S; 71° 4'51"W, at 1268 m a.s.l. To process the pollen and macro-charcoal from the sediment samples, we followed Bennett and Willis (2001), and Withlock and Larsen (2001) protocols. We took 176 pollen samples of 0.5 cm3 along the core, avoiding tephra layers. The samples were not sieved. We counted at least 400 pollen grains per sample using a light microscope at 400-1000x.
We extracted sub-samples of one cubic centimetre contiguously every centimetre and sieved in a 125 µm mesh. We counted the charcoal particles in a stereomicroscope.
Keyword(s):
Araucaria araucana; endangered species; Fire disturbance regime; forest-steppe ecotone; Patagonian Andes; Vegetation dynamics
Further details:
Bennett, Keith D; Willis, Katherine J (2002): Pollen. In: Smol J.P., Birks H.J.B., Last W.M., Bradley R.S., Alverson K. (eds) Tracking Environmental Change Using Lake Sediments. Developments in Paleoenvironmental Research, vol 3. Springer, Dordrecht., 3, 5-32, https://doi.org/10.1007/0-306-47668-1_2
Whitlock, Cathy L; Larsen, Chris (2002): Charcoal as a Fire Proxy. In: Smol J.P., Birks H.J.B., Last W.M., Bradley R.S., Alverson K. (eds) Tracking Environmental Change Using Lake Sediments. Developments in Paleoenvironmental Research, vol 3. Springer, Dordrecht., 3, 75-97, https://doi.org/10.1007/0-306-47668-1_5
Coverage:
Latitude: -38.977500 * Longitude: -71.080833
Event(s):
Relem * Latitude: -38.977500 * Longitude: -71.080833 * Elevation: 1268.0 m * Location: Patagonia * Method/Device: Livingstone piston sampler (LPS) * Comment: Core segments were extruded in the field, wrapped in plastic film and aluminium foil and stored in plastic half pipes.
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
2 datasets

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Datasets listed in this bundled publication

  1. Moreno-Gonzalez, R; Giesecke, T; Fontana, SL (2020): Macro-charcoal analysis of Lake Relem sediment core, northern Patagonia. https://doi.org/10.1594/PANGAEA.923738
  2. Moreno-Gonzalez, R; Giesecke, T; Fontana, SL (2020): Pollen composition of Lake Relem sediment core, northern Patagonia. https://doi.org/10.1594/PANGAEA.923740