Small peatland with a big story: 600-year paleoecological and historical data from a kettle-hole peatland in Western Russia - Archive ouverte HAL
Article Dans Une Revue The Holocene Année : 2021

Small peatland with a big story: 600-year paleoecological and historical data from a kettle-hole peatland in Western Russia

Agnieszka Mroczkowska
Piotr Kittel
Katarzyna Marcisz
Ekaterina Dolbunova
  • Fonction : Auteur
Emilie Gauthier
Mariusz Lamentowicz
Andrey Mazurkevich
  • Fonction : Auteur
Milena Obremska
  • Fonction : Auteur
Mateusz Płóciennik
Mateusz Kramkowski
  • Fonction : Auteur
Dominika Łuców
Yuriy Kublitskiy
  • Fonction : Auteur
Michał Słowiński

Résumé

Peatlands are important records of past environmental changes. Based on a multiproxy analysis, the main factors influencing the evolution of a peatland can be divided into autogenic and allogenic. Among the important allogenic factors, apart from climate change, are deforestation and drainage, which are directly associated with human impact. Numerous consequences arise from these processes, the most important of which are physical and chemical denudation in the catchment and the related hydrological disturbances in the catchment and peatland. The present study determined how human activities and the past climatic variability mutually influenced the development of a small peatland ecosystem. The main goals of the study were: (1) to trace the local changes of the peatland history over the past 600 years, (2) to investigate their relationship with changes in regional hydroclimate patterns, and (3) to estimate the sensitivity of a small peatland to natural and human impact. Our reconstructions were based on a multiproxy analysis, including the analysis of pollen, macrofossils, Chironomidae, Cladocera, and testate amoebae. Our results showed that, depending on the changes in water level, the history of peatland can be divided into three phases as follows: 1/the phase of stable natural conditions, 2/phase of weak changes, and 3/phase of significant changes in the catchment. Additionally, to better understand the importance of the size of catchment and the size of the depositional basin in the evolution of the studied peatland ecosystem, we compared data from two peatlands – large and small – located close to each other. The results of our study indicated that “size matters,” and that larger peatlands are much more resilient and resistant to rapid changes occurring in the direct catchment due to human activities, whereas small peatlands are more sensitive and perfect as archives of environmental changes.
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Dates et versions

hal-03512614 , version 1 (05-01-2022)

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Citer

Agnieszka Mroczkowska, Piotr Kittel, Katarzyna Marcisz, Ekaterina Dolbunova, Emilie Gauthier, et al.. Small peatland with a big story: 600-year paleoecological and historical data from a kettle-hole peatland in Western Russia. The Holocene, 2021, 31 (11-12), pp.1761-1776. ⟨10.1177/09596836211033224⟩. ⟨hal-03512614⟩
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