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Soromotin AV, Lanza GR, Sizov OS, Lobotrosova SA, Abakumov EV, Zverev AO, Yakimov AS, Konstantinov AO, Kurasova AO, Prihod'ko NV, Salavatulin VM, Varentsov MI, Alharbi SA, Alotaibi KD, Kuzyakov Y. Cyclic and linear trajectories of ecosystem evolution on sand dunes in Siberian taiga: A comprehensive analysis. Sci Total Environ 2024; 928:172265. [PMID: 38621534 DOI: 10.1016/j.scitotenv.2024.172265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 04/04/2024] [Accepted: 04/04/2024] [Indexed: 04/17/2024]
Abstract
Extensive unforested sandy areas on the margins of floodplains and riverbeds, formed by dunes, barchans, and accumulation berms, are a ubiquitous feature across northern Eurasia and Alaska. These dynamic landscapes, which bear witness to the complex Holocene and modern climatic fluctuations, provide a unique opportunity to study ecosystem evolution. Within this heterogeneous assemblage, active dunes, characterized by their very sparse plant communities, contrast sharply with the surrounding taiga (boreal) forests common for the stabilized dunes. This juxtaposition makes these regions to natural laboratories to study vegetation succession and soil development. Through a comprehensive analysis of climate, geomorphology, vegetation, soil properties, and microbiome composition, we elucidate the intricacies of cyclic and linear ecosystem evolution within a representative sandy area located along the lower Nadym River in Siberia, approximately 100 km south of the Arctic Circle. The shift in the Holocene wind regime and the slow development of vegetation under harsh climatic conditions promoted cyclical ecosystem dynamics that precluded the attainment of a steady state. This cyclical trajectory is exemplified by Arenosols, characterized by extremely sparse vegetation and undifferentiated horizons. Conversely, accelerated vegetation growth within wind-protected enclaves on marginally stabilized soils facilitated sand stabilization and subsequent pedogenesis towards Podzols. Based on soil acidification due to litter input (mainly needles, lichens, and mosses) and the succession of microbial communities, we investigated constraints on carbon and nutrient availability during the initial stages of pedogenesis. In summary, the comprehensive study of initial ecosystem development on sand dunes within taiga forests has facilitated the elucidation of both common phases and spatiotemporal dynamics of vegetation and soil succession. This analysis has further clarified the existence of both cyclic and linear trajectories within the successional processes of ecosystem evolution.
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Affiliation(s)
| | - Guy R Lanza
- Division of Environmental Sciences, State University of New York (SUNY) Syracuse, NY, USA
| | - Oleg S Sizov
- Oil and Gas Research Institute, Russian Academy of Sciences, Moscow, Russia
| | | | | | | | - Artem S Yakimov
- Earth Cryosphere Institute, Tyumen Scientific Centre, Russia
| | | | - Alina O Kurasova
- Tyumen State University, Tyumen, Russia; Tomsk State University, Russia
| | | | | | - Mikhail I Varentsov
- Lomonosov Moscow State University, Research Computing Center, Moscow, Russia
| | | | - Khaled D Alotaibi
- Department of Soil Science, College of Food and Agricultural Science, King Saud University, Riyadh, Saudi Arabia
| | - Yakov Kuzyakov
- Peoples Friendship University of Russia (RUDN University), 117198 Moscow, Russia; Department of Soil Science of Temperate Ecosystems, Department of Agricultural Soil Science, University of Göttingen, Göttingen, Germany
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