Limnology and Sedimentary Record of Radok Lake, Amery Oasis, East Antarctica

Wagner, Bernd; Cremer, Holger

doi:10.1007/3-540-32934-x_57

Cited by 3 publications

(2 citation statements)

References 20 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Anoxic bottom water conditions are therefore unlikely, because bacterial oxygen consumption during OM decomposition is low or negligible in such oligotrophic lakes (e.g. Wagner and Cremer, 2006). This assumption is supported by relatively low instead of elevated TOC content, as is commonly the case in anoxic bottom waters due to the enhanced preservation of OM (Melles et al ., 2007).…”

Section: Local Climate Glacial and Vegetation Historymentioning

confidence: 99%

Climate, glacial and vegetation history of the polar Ural Mountains since c. 27 cal ka bp, inferred from a 54 m long sediment core from Lake Bolshoye Shchuchye

Lenz

Andreev

Nazarova

et al. 2021

J Quaternary Science

Self Cite

View full text Add to dashboard Cite

Because continuous and high‐resolution records are scarce in the polar Urals, a multiproxy study was carried out on a 54 m long sediment succession (Co1321) from Lake Bolshoye Shchuchye. The sedimentological, geochemical, pollen and chironomid data suggest that glaciers occupied the lake's catchment during the cold and dry MIS 2 and document a change in ice extent around 23.5–18 cal ka bp. Subsequently, meltwater input, sediment supply and erosional activity decreased as local glaciers progressively melted. The vegetation around the lake comprised open, herb and grass‐dominated tundra‐steppe until the Bølling‐Allerød, but shows a distinct change to probably moister conditions around 17–16 cal ka bp. Local glaciers completely disappeared during the Bølling‐Allerød, when summer air temperatures were similar to today and low shrub tundra became established. The Younger Dryas is confined by distinct shifts in the pollen and chironomid records pointing to drier conditions. The Holocene is characterised by a denser vegetation cover, stabilised soil conditions and decreased minerogenic input, especially during the local thermal maximum between c. 10 and 5 cal ka bp. Subsequently, present‐day vegetation developed and summer air temperatures decreased to modern, except for two intervals, which may represent the Little Ice Age and Medieval Warm Period.

show abstract

Section: Local Climate Glacial and Vegetation Historymentioning

confidence: 99%

Climate, glacial and vegetation history of the polar Ural Mountains since c. 27 cal ka bp, inferred from a 54 m long sediment core from Lake Bolshoye Shchuchye

Lenz

Andreev

Nazarova

et al. 2021

J Quaternary Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…Landscapes of the Amery Oasis evolved primarily under the influence of wet-based (probably polythermal) glaciers during the Miocene and Pliocene; in contrast, the Quaternary Period was characterized by cold-based glaciers that had relatively little impact on the landscape. The late Pleistocene and Holocene history of Amery oasis was reconstructed from analysis of lacustrine sediments in Lakes Terrasovoe and Radok (Wagner and Cremer 2006). Basal glacial and glaciofluvial sediments are overlain by 2.70 m of laminated algal and microbial mats and a few interspersed moss layers.…”

Section: Geologymentioning

confidence: 99%