Exothermic and endothermic soils of Iceland

Геннадиев, А. Н.; Geptner, A. R.; Жидкин, А. П.; Chernyanskii, S. S.; Pikovskii, Yu. I.

doi:10.1134/s1064229307060014

Cited by 13 publications

(6 citation statements)

References 9 publications

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“…2 f), indicating the presence of intrusive ferruginous pedofeatures and a high content of anatase and alunite-jarosite. Similar brightly colored B1-horizons have been detected in endothermal soils of Iceland 5 , Kamchatka 18 , 24 and California 37 . Therefore, it could be suggested that such horizons, which form under the influence of steam-heated acid sulfate water, occurred worldwide.…”

Section: Resultssupporting

confidence: 69%

“…4 c). New mineral phases and an increased proportion of clay in the particle-size distribution were previously reported in endothermal soils of Kamchatka 18 , 24 , Japan 64 , California 37 , and Iceland 5 .…”

Section: Resultssupporting

confidence: 58%

“…Unlike endothermal soils that experience the influence of steam-heated chloride and hydrocarbonate waters 19 – 22 , endothermal soils that are affected by acid-sulfate waters differ considerably from non-heated soils 1 , 5 , 18 , 23 – 25 . Their topsoils are depleted in Ca, Mg, Na, K and are intensively ferruginized up to the formation of large ferruginous nodules enriched in Al, Fe and Ti 18 , 23 , 26 .…”

Section: Introductionmentioning

confidence: 99%

“…Such territories can also serve as natural laboratories to study the effects of increased CO 2 concentrations in the soil atmosphere 3 and climate warming 4 . Specific endothermal soils 5 provide habitats for endangered, unique and protected plant species 1 , 4 , 6 – 9 and microorganisms 10 – 14 . In Kamchatka’s thermal landscapes (where the soils have summer temperatures of more than 30 °C at a 50-cm depth 8 ), the composition of vegetation and soil microbiota depends on changes in soil acidity, H 2 S concentration, temperature, salinity and concentrations of toxic compounds 4 , 6 , 7 .…”

Section: Introductionmentioning

confidence: 99%

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The variability of soils and vegetation of hydrothermal fields in the Valley of Geysers at Kamchatka Peninsula

Semenkov

Klink

Лебедева

et al. 2021

Sci Rep

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The picturesque and high conservation value thermal landscapes of the Valley of Geysers feature endothermal (heated by endogenous fluids) soils which support endangered and unique species. However, such soils have not been distinguished as a separate taxon within most classification systems. In this study, we described the soil morphology at macro-, meso- and micro-scales, chemistry, mineralogy and vegetation of these landscapes as they are affected by the steam-heated acid-sulfate waters. The studied catenary sequence from exothermal (non-heated) to endothermal soils was characterized by decreasing contents of soil organic carbon, sand fraction, essential nutrients (Ca, K, Mg, Mn and Si), increasing soil acidity, amounts of fine particle-size fractions and contents of trace elements (Al, As, Co, Cr, Cu, Fe, Pb, Ti and V) as well as the development of sodium-sulfate salinity, kaolinization and ferrugination. In phytocenoses supported by endothermal soils, species of order Rosales and Asparagales were overrepresented among obligate and facultative thermophytes respectively, and species of order Poales were underrepresented among facultative thermophytes in relation to the flora of the Valley of Geysers. Phytocenoses on the non-heated Andosols were enriched in Polypodiopsida species. The results of our comparative analysis of the thermally-induced variability in the soils and vegetation contribute to the general understanding of mineralogical, bio-abiotic and biological systems affected by steam-heated acid-sulfate waters. We hope that our findings will provide a basis for future transdisciplinary studies of the influence of steam-heated waters of a hot spring on the thermal landscapes.

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Section: Resultssupporting

confidence: 69%

Section: Resultssupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The variability of soils and vegetation of hydrothermal fields in the Valley of Geysers at Kamchatka Peninsula

Semenkov

Klink

Лебедева

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Smectites and even kaolinites are likely to occur elsewhere in soils under unstable Tertiary basalt stacks with red sedimentary interlayers. However, a suit of secondary clay minerals occur within the numerous thermal areas of Iceland, but they have a limited extent (see, e.g., Gennadiev et al 2007). …”

Section: Mineralsmentioning

confidence: 99%