Baidzharakhs (relic mounds) increase plant community diversity by interrupting zonal vegetation distribution along the Arctic Sea, northern Siberia

Tsuyuzaki, Shiro; Sento, Nobusyoshi; Fukuda, Masami

doi:10.1007/s00300-009-0727-x

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…Accordingly, drainage is the most important local ecological factor in this area. The best drained sites, thermokarst mounds on top of Yedoma ridges, are the most diverse in terms of plant species Tsuyuzaki et al, 2010). In spite of these small scale differences, the species diversity in the proximity of the study site is very low.…”

Section: Stanchikov Yarmentioning

confidence: 99%

Paleontological records indicate the occurrence of open woodlands in a dry inland climate at the present-day Arctic coast in western Beringia during the Last Interglacial

Kienast

Wetterich

Kuzmina

et al. 2011

Quaternary Science Reviews

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a b s t r a c tPermafrost records, accessible at outcrops along the coast of Oyogos Yar at the Dmitry Laptev Strait, NE-Siberia, provide unique insights into the environmental history of Western Beringia during the Last Interglacial. The remains of terrestrial and freshwater organisms, including plants, coleopterans, chironomids, cladocerans, ostracods and molluscs, have been preserved in the frozen deposits of a shallow paleolake and indicate a boreal climate at the present-day arctic mainland coast during the Last Interglacial. Terrestrial beetle and plant remains suggest the former existence of open forest-tundra with larch (Larix dahurica), tree alder (Alnus incana), birch and alder shrubs (Duschekia fruticosa, Betula fruticosa, Betula divaricata, Betula nana), interspersed with patches of steppe and meadows. Consequently, the tree line was shifted to at least 270 km north of its current position. Aquatic organisms, such as chironomids, cladocerans, ostracods, molluscs and hydrophytes, indicate the formation of a shallow lake as the result of thermokarst processes. Steppe plants and beetles suggest low net precipitation. Littoral pioneer plants and chironomids indicate intense lake level fluctuations due to high evaporation. Many of the organisms are thermophilous, indicating a mean air temperature of the warmest month that was greater than 13 C, which is above the minimum requirements for tree growth. These temperatures are in contrast to the modern values of less than 4 C in the study area. The terrestrial and freshwater organism remains were found at a coastal exposure that was only 3.5 m above sea level and in a position where they should have been under sea during the Last Interglacial when the global sea level was 6e10 m higher than the current levels. The results suggest that during the last warm stage, the site was inland, and its modern coastal situation is the result of tectonic subsidence.

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Section: Stanchikov Yarmentioning

confidence: 99%

Paleontological records indicate the occurrence of open woodlands in a dry inland climate at the present-day Arctic coast in western Beringia during the Last Interglacial

Kienast

Wetterich

Kuzmina

et al. 2011

Quaternary Science Reviews

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show abstract

“…This has affected above-ground vegetation to varying degrees. There have been some reports on the relationships between environmental factors and plant communities in alpine cold regions (Tsuyuzaki et al 2010;Vanderpuye et al 2002). Changes in the permafrost environment affect various characteristics of plant communities, such as the distribution of plant species, biomass, and vegetation coverage (Bakalin and Vetrova 2008;Bartelt-Ryser et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Effects of environmental factors on the distribution of plant communities in a semi‐arid region of the Qinghai‐Tibet Plateau

Wang

Yang

et al. 2012

Ecological Research

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Against the background of global climate warming, the relationship between plant communities in high‐cold ecosystems and environmental gradients has attracted much attention. We investigated the relationship between the distribution of plant communities and environmental factors in a semi‐arid region of the Qinghai‐Tibet Plateau. We analyzed the effects of environmental factors on the distribution of plant communities using two‐way indicator species analysis and canonical correspondence analysis. The most important factor explaining the distribution of plant communities was the depth of the active layer of permafrost (denoted as PF), followed by soil water content at 40‐cm soil depth. There was a strong correlation between these two factors. With changes in the PF, the dominant species in plant communities showed an obvious transition. The indices of species richness and species diversity decreased markedly with increasing PF, whereas biomass and vegetation coverage showed weaker responses to changes in the PF. The distribution structure for plant communities in this area mainly results from changes in the PF. Furthermore, the PF has remarkable and important effects on the characteristics of the plant community.

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Different response of vegetation to permafrost change in semi-arid and semi-humid regions in Qinghai–Tibetan Plateau

Wang

Yang

et al. 2011

Environ Earth Sci

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Baidzharakhs (relic mounds) increase plant community diversity by interrupting zonal vegetation distribution along the Arctic Sea, northern Siberia

Cited by 4 publications

References 15 publications

Paleontological records indicate the occurrence of open woodlands in a dry inland climate at the present-day Arctic coast in western Beringia during the Last Interglacial

Paleontological records indicate the occurrence of open woodlands in a dry inland climate at the present-day Arctic coast in western Beringia during the Last Interglacial

Effects of environmental factors on the distribution of plant communities in a semi‐arid region of the Qinghai‐Tibet Plateau

Different response of vegetation to permafrost change in semi-arid and semi-humid regions in Qinghai–Tibetan Plateau

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