Palynology on lake sediments from the Pyrenees
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PANGAEA
2005
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| author | Guiter, Frederic Andrieu-Ponel, Valerie Digerfeldt, Gunnar Reille, Maurice de Beaulieu, Jacques-Louis Ponel, Philippe |
| author_facet | Guiter, Frederic Andrieu-Ponel, Valerie Digerfeldt, Gunnar Reille, Maurice de Beaulieu, Jacques-Louis Ponel, Philippe |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_743230 |
| institution | PANGAEA |
| language | en |
| publishDate | 2005 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Palynology on lake sediments from the Pyrenees Guiter, Frederic Andrieu-Ponel, Valerie Digerfeldt, Gunnar Reille, Maurice de Beaulieu, Jacques-Louis Ponel, Philippe C20Profile; CoreA10; CoreA23; CoreA37; CoreB20; JOWC; Jowsey corer; Lake Racou, France; RAA10; RAA23; RAA37; RAB20; RAC20; RUSC; Russian corer 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. |
| title | Palynology on lake sediments from the Pyrenees |
| topic | C20Profile; CoreA10; CoreA23; CoreA37; CoreB20; JOWC; Jowsey corer; Lake Racou, France; RAA10; RAA23; RAA37; RAB20; RAC20; RUSC; Russian corer |
| url | https://doi.org/10.1594/PANGAEA.743230 |