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  Late Glacial and Holocene environmental history of the Pirin Mountains (SW Bulgaria): a paleolimnological study of Lake Dalgoto (2310 m)

Stefanova, I., Ognjanova-Rumenova, N., Hofmann, W., & Ammann, B. (2003). Late Glacial and Holocene environmental history of the Pirin Mountains (SW Bulgaria): a paleolimnological study of Lake Dalgoto (2310 m). Journal of Paleolimnology, 30, 95-111.

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 Creators:
Stefanova, Ivanka, Author
Ognjanova-Rumenova, Nadja, Author
Hofmann, Wolfgang1, Author           
Ammann, Brigitta, Author
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              

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Free keywords: Chironomidae; Cladocera; diatoms; late Quaternary environment; pollen; Southwestern Bulgaria
 Abstract: Diatoms, Cladocera, and chironomids preserved in the sediments of Lake Dalgoto were studied to reconstruct the history of the lake ecosystem in the context of the vegetation history as represented by the pollen stratigraphy. Younger Dryas silty sediments at the base of the core are characterized by low diversity of aquatic organisms. The transition to the Holocene is indicated by a sharp change from silt to clay-gyttja. The migration and expansion of trees at lower elevations between 10200 and 8500 C-14-yr BP, along with higher diversities and concentrations of aquatic organisms and the decreased proportion of north-alpine diatoms, point to rapidly rising summer temperatures. After 6500 C-14-yr BP the expansion of Pinus mugo in the catchment coincides with signs of natural eutrophication as recorded by an increase of planktonic diatoms. In the late Holocene ( 4000-0 C-14-yr BP) Pinus peuce and Abies are reduced and Picea expands. Cereal grains and disturbance indicators suggest late-Holocene human modification of the vegetation.

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Language(s): eng - English
 Dates: 2003
 Publication Status: Issued
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 Rev. Type: Peer
 Identifiers: eDoc: 49848
Other: 2229/S 37986
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Title: Journal of Paleolimnology
  Alternative Title : J. Paleolim.
Source Genre: Journal
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Pages: - Volume / Issue: 30 Sequence Number: - Start / End Page: 95 - 111 Identifier: ISSN: 0921-2728