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

Stefanova, Ivanka; Ognjanova‐Rumenova, Nadja; Hofmann, Wolfgang; Ammann, Brigitta (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(1), pp. 95-111. Kluwer Academic 10.1023/A:1024746818627

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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 14C-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 14C-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 14C-yr BP) Pinus peuce and Abies are reduced and Picea expands. Cereal grains and disturbance indicators suggest late-Holocene human modification of the vegetation.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Palaeoecology
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Ammann, Brigitta

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0921-2728

Publisher:

Kluwer Academic

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

07 Dec 2015 10:43

Last Modified:

07 Dec 2015 10:43

Publisher DOI:

10.1023/A:1024746818627

Uncontrolled Keywords:

Chironomidae, Cladocera, Diatoms, Late Quaternary environment, Pollen, Southwestern Bulgaria

BORIS DOI:

10.7892/boris.73344

URI:

https://boris.unibe.ch/id/eprint/73344

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