Multi‐proxy reconstruction of the Holocene vegetation and land use dynamics in the Julian Alps, north‐west Slovenia
Résumé
Small mountain lakes are natural archives for understanding long-term natural and anthropogenic impact on the environment. This study focused on long-term (last ca. 13 000 years) vegetation changes and sedimentary processes in the catchment area of Lake Planina pri jezeru (1430 m a.s.l.) by using mineralogical, geochemical and palynological methods. Palynological results suggest that regional vegetation between 12 900 and 11 700 cal a BP was a herbaceous-forest tundra (Pinus, Artemisia, Poaceae). Climate warming at the beginning of the Holocene (ca. 11 700 cal a BP) caused the transition from a wetland (Cyperaceae) to an eutrophic lake with alternating anoxic (pyrite) and oxic conditions (gypsum). In addition, the surrounding area became forested (Picea, Larix, Ulmus). Fagus expanded at 10 200 cal a BP and Abies at 8200 cal a BP. Between 7500 and 4300 cal a BP, human impact on the environment was barely noticeable and mostly limited to grazing. During 4300-430 cal a BP human impact became more evident and gradually increased. The greatest influence was observed from 430 cal a BP onwards, when excessive exploitation of the surrounding area (logging and grazing) severely eutrophicated the lake.
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J Quaternary Science - 2022 - Caf - Multi‐proxy reconstruction of the Holocene vegetation and land use dynamics in the(2).pdf (2.79 Mo)
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