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Guiter, Frederic; Andrieu-Ponel, Valerie; Digerfeldt, Gunnar; Reille, Maurice; de Beaulieu, Jacques-Louis; Ponel, Philippe (2005): Palynology on lake sediments from the Pyrenees [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.743230, Supplement to: Guiter, F et al. (2005): Vegetation history and lake-level changes from the Younger Dryas to the present in Eastern Pyrenees (France): pollen, plant macrofossils and lithostratigraphy from Lake Racou (2000 m a.s.l.). Vegetation History and Archaeobotany, 14(2), 99-118, https://doi.org/10.1007/s00334-005-0065-z

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Abstract:
A multi-proxy palaeoecological investigation including pollen, plant macrofossil, radiocarbon and sedimentological analyses, was performed on a small mountain lake in the Eastern Pyrenees. This has allowed the reconstruction of: (1) the vegetation history of the area based on five pollen diagrams and eight AMS14C dates and (2) the past lake-level changes, based on plant macrofossil, lithological and pollen analysis of two stratigraphical transects correlated by pollen analysis. The palaeolake may have appeared before the Younger Dryas; the lake-level was low and the vegetation dominated by cold steppic grasslands. The lake-level rose to its highest level during the Holocene in the Middle Atlantic (at ca. 5060±45 b.p.). Postglacial forests (Quercetum mixtum and Abieto-Fagetum) developed progressively in the lower part of the valley, while dense Pinus uncinata forests rapidly invaded the surroundings of the mire and remained the dominant local vegetation until present. The observed lowering of the lake levels during the Late Atlantic and the Subboreal (from 5060 ± B.P. to 3590±40 b.p.) was related to the overgrowth of the mire. The first obvious indications of anthropogenic disturbances of the vegetation are recorded at the Atlantic/Subboreal boundary as a reduction in the forest component, which has accelerated during the last two millennia.
Coverage:
Latitude: 42.554160 * Longitude: 2.008330
Event(s):
RAA10 (CoreA10) * Latitude: 42.554160 * Longitude: 2.008330 * Elevation: 2000.0 m * Lake water depth: 1 m * Location: Lake Racou, France * Method/Device: Jowsey corer (JOWC) * Comment: No laminations. overgrown part of the lake. Area: 7 ha. Mire. Physiography: intra-morainic former lake. Surrounding vegetation: boundary subalpine forest and grassland. Vegetation formation: subalpine belt.
RAA23 (CoreA23) * Latitude: 42.554160 * Longitude: 2.008330 * Elevation: 2000.0 m * Lake water depth: 1 m * Location: Lake Racou, France * Method/Device: Jowsey corer (JOWC) * Comment: No laminations. overgrown part of the lake. Area: 7 ha. Mire. Physiography: intra-morainic former lake. Surrounding vegetation: boundary subalpine forest and grassland. Vegetation formation: subalpine belt.
RAA37 (CoreA37) * Latitude: 42.554160 * Longitude: 2.008330 * Elevation: 2000.0 m * Lake water depth: 1 m * Location: Lake Racou, France * Method/Device: Russian corer (RUSC) * Comment: No laminations. overgrown part of the lake. Area: 7 ha. Mire. Physiography: intra-morainic former lake. Surrounding vegetation: boundary subalpine forest and grassland. Vegetation formation: subalpine belt.
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
10 datasets

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Datasets listed in this publication series

  1. Guiter, F; Andrieu-Ponel, V; Digerfeldt, G et al. (2010): Lithology of sediment core RAA10, Lake Racou, France. https://doi.org/10.1594/PANGAEA.741660
  2. Guiter, F; Andrieu-Ponel, V; Digerfeldt, G et al. (2010): Pollen profile RAA10, Lake Racou, France. https://doi.org/10.1594/PANGAEA.739725
  3. Guiter, F; Andrieu-Ponel, V; Digerfeldt, G et al. (2010): Lithology of sediment core RAA23, Lake Racou, France. https://doi.org/10.1594/PANGAEA.741661
  4. Guiter, F; Andrieu-Ponel, V; Digerfeldt, G et al. (2010): Pollen profile RAA23, Lake Racou, France. https://doi.org/10.1594/PANGAEA.739726
  5. Guiter, F; Andrieu-Ponel, V; Digerfeldt, G et al. (2010): Lithology of sediment core RAA37, Lake Racou, France. https://doi.org/10.1594/PANGAEA.741662
  6. Guiter, F; Andrieu-Ponel, V; Digerfeldt, G et al. (2010): Pollen profile RAA37, Lake Racou, France. https://doi.org/10.1594/PANGAEA.739727
  7. Guiter, F; Andrieu-Ponel, V; Digerfeldt, G et al. (2010): Lithology of sediment core RAB20, Lake Racou, France. https://doi.org/10.1594/PANGAEA.741663
  8. Guiter, F; Andrieu-Ponel, V; Digerfeldt, G et al. (2010): Pollen profile RAB20, Lake Racou, France. https://doi.org/10.1594/PANGAEA.739728
  9. Guiter, F; Andrieu-Ponel, V; Digerfeldt, G et al. (2010): Lithology of sediment core RAC20, Lake Racou, France. https://doi.org/10.1594/PANGAEA.741664
  10. Guiter, F; Andrieu-Ponel, V; Digerfeldt, G et al. (2010): Pollen profile RAC20, Lake Racou, France. https://doi.org/10.1594/PANGAEA.739729