A synthesis of post-glacial diatom records from Lake Baikal

Bradbury, J. Platt; Bezrukova, Ye. V.; Chernyaeva, G. P.; Colman, Steven M.; Хурсевич, Г. К.; King, John W.; Likoshway, Ye. V.

doi:10.1007/bf00684034

Cited by 110 publications

(91 citation statements)

References 18 publications

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“…Indeed, the change at ca. 15 ka corresponds to the onset of wet and warmer conditions associated with abrupt increase in precipitation and strong winds in Siberia, which in turn may have promoted deep mixing and nutrient regeneration in the lake (Bradbury et al, 1994;Chebykin et al, 2002). In the Continent core, CON01-603-5, the evolution of MS signal correlates well with the interpretation of the onset of the warming at ca.…”

Section: Termination I (Ois2/ois1)supporting

confidence: 52%

“…The Published in: Global and Planetary Change (2005), vol.46, iss.1-4, pp.299-313 Status: Postprint (Author's version) Subboreal (6-3 ka) period is contrasted and characterized by alternating high to low GS values, corresponding to variations in diatom content. According to the literature, the Subboreal appears to be the warmest period of the Holocene in Lake Baikal, and is characterized by the highest diatom abundance (Williams and Jenkins, 1993;Carter and Colman, 1994;Bradbury et al, 1994). This is seemingly contradictory with the general Holocene climatic trend shown for Northern Eurasia and West Siberia (Khotinsky, 1984(Khotinsky, , 1989.…”

Section: The Holocene (Ois1)mentioning

confidence: 99%

“…At low resolution, this clay/diatom ratio mirrors global variations of glacial-interglacial periods in Siberia (Khotinsky, 1984(Khotinsky, , 1989. Highest diatom abundance occurs in the warmest climate intervals, whereas cold periods are marked by lower diatom productivity (Bezrukova et al, 1991;Qiu et al, 1993;Granina et al, 1993;Williams and Jenkins, 1993;Bradbury et al, 1994;Carter and Colman, 1994;Karabanov et al, 1999;Rioual et al, 2005-this volume;Swann et al, 2005-this volume). Lake Baikal biogenic responses to atmospheric circulation are linked to thermal characteristics of the lake cycle and the rate of vertical exchange between surface waters and deep waters.…”

Section: Introductionmentioning

confidence: 99%

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High-resolution diatom/clay record in Lake Baikal from grey scale, and magnetic susceptibility over Holocene and Termination I

Boës

Piotrowska

Fagel

2005

Global and Planetary Change

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Abstract:Tracing past climate signals from Lake Baikal sediments with a "multi-annual" resolution by conventional techniques is a difficult challenge since the sedimentation rates from Termination I up to the present range from 0.004 to 0.17 mm/year. In this paper, climate signals are reconstructed from three continuous sediment records from Vydrino Shoulder and Posolsky Bank in the Southern Basin, and Continent Ridge in the Northern Basin. For each coring site, a calendar age model was constructed using calibrated radiocarbon ages. The magnetic susceptibility is used to better constrain the age models over OIS4 to OIS1. The cores have been hardened using polymerized technique in order to allow the easy cut of thin sections that contain evidence for narrow biogenic/clayey laminations. The grey scale taken from the thin sections is used here as a high-resolution proxy record of diatom/clay ratio. The grey density values are qualitatively interpreted against the sediment components by optical microscopy from the thin sections. In the Northern Basin, the Continent station provides the best age model and sediment resolution over the Termination I period. In particular, four optima (i.e. Bölling, Alleröd, Atlantic, and Subboreal) are indicated by substantial increases of the grey scale, whereas cold periods like the Younger Dryas correspond to lower grey scale values. We emphasize that the short-term variations in the grey scale at 20 µm resolution could correspond to short climate responses in Lake Baikal sediments.

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Section: Termination I (Ois2/ois1)supporting

confidence: 52%

Section: The Holocene (Ois1)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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High-resolution diatom/clay record in Lake Baikal from grey scale, and magnetic susceptibility over Holocene and Termination I

Boës

Piotrowska

Fagel

2005

Global and Planetary Change

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“…are three closely related taxa and may represent a historically related planktonic species flock that has evolved in Lake Baikal (Julius et al 1997;Edlund 1998). These three species are generally considered summer and late-fall taxa (Kozhov 1963;Bradbury et al 1994); however, recent research suggests that C. ornata and C. baicalensis are also common in pelagic waters during spring in ''nonMelosira-years'' . C. minuta is distributed throughout the microfossil-bearing sediment layers in BDP 93-2 with 10 major absolute abundance peaks, notably in zones CA-I, IIIa, IIIb, and IV (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…(Kozhov 1963;Kozhova et al 1982), Aulacoseira islandica (O.Müll.) Simonsen (Genkal andPopovskaya 1990b, 1991;Bradbury et al 1994;Flower et al 1995;Babanazarova et al 1996), A. islandica ssp. helvetica (O.Müll.)…”

Section: Resultsmentioning

confidence: 99%

A 200,000‐year, high‐resolution record of diatom productivity and community makeup from Lake Baikal shows high correspondence to the marine oxygen‐isotope record of climate change

Edlund

Stoermer

2000

Limnology & Oceanography

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Siliceous microfossil succession was analyzed in a 200,000‐yr sediment sequence recovered from the Buguldeika Saddle in Lake Baikal, Russia. Siliceous microfossil abundance varied among core depths from no preserved microfossils during inferred colder climate conditions to recent interglacial sediments containing over 300 × 106 microfossils per g dry sediment. Depth‐age microfossil assemblage zones (CA‐I to CA‐IV) identified using correspondence analysis had high correspondence to stages in the marine d18O isotope record and could be partially aligned with Late Pleistocene glacial‐interglacial cycling models from the mid‐Siberian Highland. These observations suggest that Lake Baikal phytoplankton communities have responded to climatic changes driven by insolation parameters and global ice volumes on temporal scales similar to tropical and polar oceans. Microfossil zone CA‐I (0–11.4 kyr B.P.) corresponded to the Holocene interglacial or d18O stage 1 (0–11.4 kyr B.P.), a period of higher production in Lake Baikal during a climatic optimum. Microfossil zone CA‐II (12.3–18.7 kyr B.P.) corresponded to the Sartan glaciation and d18O stage 2 (12–24 kyr B.P.). Zone CA‐III (21.3–73.2 kyr B.P.) comprised d18O stages 3 and 4. However, within zone CA‐III, subzones CA‐IIIa and IIIb (21.3–56.8 kyr B.P.) grouped were well aligned with d18O stage 3 and contained sediments deposited during the inferred Karginskiy interstade. Microfossil zone CA‐IVa (77.4–129.2 kyr B.P.) and CA‐IVb (130.3–172.5 kyr B.P.) included d18O stages 5 and 6, respectively, with sediments that were most likely deposited during the Taz glaciation and the Kazantsevo interstade. Climate‐induced changes are reflected in production differences and in community composition specificity within microfossil zones or climate stages. This suggests that climate change drives major historical successional patterns in Lake Baikal's primary producer community; changes in primary producers must have further impacted the system's entire biota.

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Reconstructing hydrological variability in Lake Baikal during MIS 11: an application of oxygen isotope analysis of diatom silica

Mackay¹,

Karabanov

Leng

et al. 2008

J Quaternary Science

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In this paper we reconstruct hydrological variability in Lake Baikal during Marine Isotope Stage 11 (MIS 11) (427–362 ka BP) from oxygen isotope analysis of diatom silica. Highest δ18Odiatom values are found during MIS 11.3, highlighting the dominance of hydrological input from rivers flowing into the south and central basins of Lake Baikal, especially the Selenga River. Hydrological input from south basin rivers dominated for over 30 ka. However, there is evidence from both biogenic silica and δ18Odiatom records for an abrupt cooling event at ca. 390 ka BP. Stadial conditions at this time are coincident with an iceberg discharge event into the North Atlantic. The decline in δ18Odiatom values suggests increasing proportion of hydrological input from rivers to the north of Lake Baikal, due to greater influence of winter precipitation and snow‐melt. After a period of interstadial conditions during the early stages of MIS 11.1, biogenic silica and δ18Odiatom values decline, mirroring the slow growth in Northern Hemisphere ice sheets. Despite rigorous cleaning procedures, palaeoclimatic inferences need to be treated with caution due to contamination of the δ18Odiatom record; during stadial and glacial periods, contamination of the δ18Odiatom record is even more significant. © Natural Environment Research Council (NERC) copyright 2008. Reproduced with the permission of NERC. Published by John Wiley & Sons, Ltd.

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A synthesis of post-glacial diatom records from Lake Baikal

Cited by 110 publications

References 18 publications

High-resolution diatom/clay record in Lake Baikal from grey scale, and magnetic susceptibility over Holocene and Termination I

High-resolution diatom/clay record in Lake Baikal from grey scale, and magnetic susceptibility over Holocene and Termination I

A 200,000‐year, high‐resolution record of diatom productivity and community makeup from Lake Baikal shows high correspondence to the marine oxygen‐isotope record of climate change

Reconstructing hydrological variability in Lake Baikal during MIS 11: an application of oxygen isotope analysis of diatom silica

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