Flora of Yakutia: Composition and Ecological Structure

Kuznetsova, L. V.; Zakharova, V. I.; Sosina, N. K.; Николин, Е. Г.; Иванова, Е. И.; Sofronova, E. V.; Poryadina, L. N.; Mikhalyova, L. G.; Vasilyeva, I. I.; Remigailo, P. A.; Габышев, В. А.; Ivanova, Alexandra; Kopyrina, Lyubov I.

doi:10.1007/978-90-481-3774-9_2

Cited by 18 publications

(13 citation statements)

References 18 publications

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“…The 31 vascular seed plant taxa in our vegetation field surveys , represent only about one‐sixth of the taxa recorded by extensive (100 km 2 ) vegetation surveys conducted on the Taymyr peninsula (Matveyeva, ; Zyryanova et al., ) and in northern Yakutia (Kuznetsova et al., ), although the diversity is not fully comparable as we did not include bryophytes, which show a high diversity in north Siberia (Zibulski, Herzschuh, & Pestryakova, ). The bias mainly originates from the limited area of our surveys (missing the spatial heterogeneity) and from the once‐only sampling strategy (missing the seasonal and interannual heterogeneity).…”

Section: Discussionmentioning

confidence: 91%

A comparison of sedimentary DNA and pollen from lake sediments in recording vegetation composition at the Siberian treeline

Niemeyer

Epp

Stoof‐Leichsenring

et al. 2017

Molecular Ecology Resources

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Reliable information on past and present vegetation is important to project future changes, especially for rapidly transitioning areas such as the boreal treeline. To study past vegetation, pollen analysis is common, while current vegetation is usually assessed by field surveys. Application of detailed sedimentary DNA (sedDNA) records has the potential to enhance our understanding of vegetation changes, but studies systematically investigating the power of this proxy are rare to date. This study compares sedDNA metabarcoding and pollen records from surface sediments of 31 lakes along a north-south gradient of increasing forest cover in northern Siberia (Taymyr peninsula) with data from field surveys in the surroundings of the lakes. sedDNA metabarcoding recorded 114 plant taxa, about half of them to species level, while pollen analyses identified 43 taxa, both exceeding the 31 taxa found by vegetation field surveys. Increasing Larix percentages from north to south were consistently recorded by all three methods and principal component analyses based on percentage data of vegetation surveys and DNA sequences separated tundra from forested sites. Comparisons of the ordinations using procrustes and protest analyses show a significant fit among all compared pairs of records. Despite similarities of sedDNA and pollen records, certain idiosyncrasies, such as high percentages of Alnus and Betula in all pollen and high percentages of Salix in all sedDNA spectra, are observable. Our results from the tundra to single-tree tundra transition zone show that sedDNA analyses perform better than pollen in recording site-specific richness (i.e., presence/absence of taxa in the vicinity of the lake) and perform as well as pollen in tracing vegetation composition.

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Section: Discussionmentioning

confidence: 91%

A comparison of sedimentary DNA and pollen from lake sediments in recording vegetation composition at the Siberian treeline

Niemeyer

Epp

Stoof‐Leichsenring

et al. 2017

Molecular Ecology Resources

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“…The formation of soil is very slow because of deep seasonal freezing, short summers, and permafrost (Shahgedanova, 2002). The lake area belongs to the Aldan Floristic Region (Kuznetsova et al, 2010). Northern taiga dominates the study area.…”

Section: Geographical Settingsmentioning

confidence: 99%

“…Northern taiga dominates the study area. Forests consist of Larix cajanderi and L. gmelinii often accompanied by Picea obovata, P. jezoensis, and Pinus sylvestris (Konstantinov, 2000;Kuznetsova et al, 2010). The bedrock composition has an important influence on the vegetation: larch (Larix) and pine (Pinus) forest with a moss and lichen cover are especially common on the acidic metamorphic rocks, while in riparian areas small birch forests often form a belt around the mixed forest (Kuznetsova et al, 2010).…”

Section: Geographical Settingsmentioning

confidence: 99%

Vegetation Changes in Southeastern Siberia During the Late Pleistocene and the Holocene

et al. 2021

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Relationships between climate, species composition, and species richness are of particular importance for understanding how boreal ecosystems will respond to ongoing climate change. This study aims to reconstruct changes in terrestrial vegetation composition and taxa richness during the glacial Late Pleistocene and the interglacial Holocene in the sparsely studied southeastern Yakutia (Siberia) by using pollen and sedimentary ancient DNA (sedaDNA) records. Pollen and sedaDNA metabarcoding data using the trnL g and h markers were obtained from a sediment core from Lake Bolshoe Toko. Both proxies were used to reconstruct the vegetation composition, while metabarcoding data were also used to investigate changes in plant taxa richness. The combination of pollen and sedaDNA approaches allows a robust estimation of regional and local past terrestrial vegetation composition around Bolshoe Toko during the last ∼35,000 years. Both proxies suggest that during the Late Pleistocene, southeastern Siberia was covered by open steppe-tundra dominated by graminoids and forbs with patches of shrubs, confirming that steppe-tundra extended far south in Siberia. Both proxies show disturbance at the transition between the Late Pleistocene and the Holocene suggesting a period with scarce vegetation, changes in the hydrochemical conditions in the lake, and in sedimentation rates. Both proxies document drastic changes in vegetation composition in the early Holocene with an increased number of trees and shrubs and the appearance of new tree taxa in the lake’s vicinity. The sedaDNA method suggests that the Late Pleistocene steppe-tundra vegetation supported a higher number of terrestrial plant taxa than the forested Holocene. This could be explained, for example, by the “keystone herbivore” hypothesis, which suggests that Late Pleistocene megaherbivores were able to maintain a high plant diversity. This is discussed in the light of the data with the broadly accepted species-area hypothesis as steppe-tundra covered such an extensive area during the Late Pleistocene.

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“…This may explain why we find different wetting trends for the lake catchments of our three sites: an evident wetting trend in the typical tundra site since 1.6 ka, but a gentle trend in the forest-tundra site and a subtle trend in the open larch forest site. A thinner active layer and related poorer drainage in the tundra area compared to the southern forested sites could explain these differences (Nikolaev et al, 2009;Kuznetsova et al, 2010;Blok et al, 2011). The fact that turnover in taxonomic composition at each site follows its own time trajectory suggests a forcing factor other than climate changes, i.e., the effects of vegetation, soil characteristics, and topography within the lake catchment (Young et al, 1997), potentially explaining the latitudinal differences in vegetation composition and the site-specific trajectories of turnover in taxonomic composition captured by our pollen and sedaDNA results.…”

Section: Contributions Of Pollen and Sedadna To Vegetation Reconstrucmentioning

confidence: 99%

Holocene Vegetation and Plant Diversity Changes in the North-Eastern Siberian Treeline Region From Pollen and Sedimentary Ancient DNA

et al. 2020

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Holocene Vegetation and Plant Diversity Changes through time and is higher than the other sites since around 2.5 ka. Taken together, there is no evidence to suggest that the latitudinal gradients in species diversity changes are present at a millennial scale. Additionally, a weak correlation between the principal component analysis (PCA) site scores of sedaDNA and species richness suggests that climate may not be a direct driver of species turnover within a lake's catchment. Our data suggest that sedaDNA and pollen have different but complementary abilities for reconstructing past vegetation and species diversity along a latitude.

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Flora of Yakutia: Composition and Ecological Structure

Cited by 18 publications

References 18 publications

A comparison of sedimentary DNA and pollen from lake sediments in recording vegetation composition at the Siberian treeline

A comparison of sedimentary DNA and pollen from lake sediments in recording vegetation composition at the Siberian treeline

Vegetation Changes in Southeastern Siberia During the Late Pleistocene and the Holocene

Holocene Vegetation and Plant Diversity Changes in the North-Eastern Siberian Treeline Region From Pollen and Sedimentary Ancient DNA

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