Climate change and human impact in the southern Baltic during the last millennium reconstructed from an ombrotrophic bog archive

• Autorzy: Lamentowicz M. , Gałka M. , Pawlyta J. , Lamentowicz Ł , Goslar T. , Miotk-Szpiganowicz G.
• Języki publikacji: EN

Abstrakty

EN

We present the last millennium of history of a peatland located in northern Poland. Our results are based on two replicate monoliths taken from a Baltic raised bog. We applied a high-resolution approach and radiocarbon dating to the peat material to obtain a detailed palaeoenvironmental reconstruction. To reconstruct past peatland moisture, we used three proxies: testate amoebae, plant macrofossils and pollen. Despite different peat accumulation and extensive hiatus in the formerly studied core, both monoliths show a similar pattern of changes. However, the core from this study provides us with more detailed data on S. fuscum disappearance which correlates well with the data from the other Baltic bog, Słowińskie Błoto. Our research shows that pristine Baltic bogs can be dated to AD 1350. Słowińskie Błoto palaeohydrology confirms AD 1300 as the beginning of the hydrological disturbance. In the case of the Stążki and Słowińskie Błoto bogs, the Little Ice Age (LIA) is recorded between AD 1500 and AD 1800. However, this climatic change might have been blurred by human impact. In the case of the Baltic bogs, their reference virgin state can be dated to AD 1200. After this date, we observed increasing human impact and climatic instability connected with the LIA. However, between AD 1800 and 1900, bogs were wet, most possibly due to climatic forcing. This fact suggests that despite human impact, recent peat deposits can still reflect climate. Our research provided information related to the time of existence, location and characteristics of the natural/pristine state. High-resolution peatland palaeoecology is crucial for restoration activities, e.g., rewetting and environmental management. The palaeohydrological context (supported by other proxtes) of the last 1000 years provides a retiable answer to the question: 'To rewet or not to rewet?'

Słowa kluczowe

EN

Baltic bog; last millennium; multi-proxy; Poland; peatlands; raised bog

• Wydawca: Institute of Geological Science Polish Academy of Science
• Czasopismo: Studia Quaternaria
• Rocznik: 2011
• Tom: Vol. 28
• Strony: 3--16
• Opis fizyczny: Bibliogr. 66 poz.

Twórcy

autor

Lamentowicz M.

autor

Gałka M.

autor

Pawlyta J.

autor

Lamentowicz Ł

autor

Goslar T.

autor

Miotk-Szpiganowicz G.

• Department of Biogeography and Palaeoecology, Faculty of Geosciences, Adam Mickiewicz University, Dzięgielowa 27, 61-680 Poznań, Poland

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