Distribution of bacterial and archaeal ether lipids in soils and surface sediments of Tibetan lakes: Implications for GDGT-based proxies in saline high mountain lakes

Günther, Franziska; Thiele, Andrej; Gleixner, Gerd; Xu, Bin; Yao, Tandong; Schouten, Stefan

doi:10.1016/j.orggeochem.2013.11.014

Cited by 70 publications

(68 citation statements)

References 60 publications

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“…Glycerol dialkyl glycerol tetraethers (GDGTs) are membrane lipids that are often applied to reconstruct air and water temperatures in lacustrine systems (e.g., Sinninghe Damst e et al, 2009;Blaga et al, 2010;Wang et al, 2012). Branched GDGTs (bGDGTs) are mainly produced by bacteria, and their degree of cyclization (CBT) is correlated with soil pH (Weijers et al, 2007) as well as lake water pH (Schoon et al, 2013;Günther et al, 2014). The methylation of bGDGTs is correlated with air temperature and (soil/water) pH (Peterse et al, 2012;Günther et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Branched GDGTs (bGDGTs) are mainly produced by bacteria, and their degree of cyclization (CBT) is correlated with soil pH (Weijers et al, 2007) as well as lake water pH (Schoon et al, 2013;Günther et al, 2014). The methylation of bGDGTs is correlated with air temperature and (soil/water) pH (Peterse et al, 2012;Günther et al, 2014). Isoprenoid GDGTs (iGDGTs) of archaeal origin are used to estimate water temperatures based on the TEX 86 proxy (Schouten et al, 2002;Günther et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quaternary ecological responses and impacts of the Indian Ocean Summer Monsoon at Nam Co, Southern Tibetan Plateau

Günther

Witt

Schouten

et al. 2015

Quaternary Science Reviews

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Quaternary ecological responses and impacts of the Indian Ocean Summer Monsoon at Nam Co, Southern Tibetan Plateau

Günther

Witt

Schouten

et al. 2015

Quaternary Science Reviews

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“…Schouten et al, 2002;Kim et al, 2008;Zhou et al, 2014) and lacustrine sediments (e.g. Powers et al, 2004;Blaga et al, 2009;Günther et al, 2014), soils (e.g. Weijers et al, 2006b) and peats (e.g.…”

Section: Introductionmentioning

confidence: 99%

Assessment of branched GDGTs as temperature proxies in sedimentary records from several small lakes in southwestern Greenland

Colcord

Cadieux

Brassell

et al. 2015

Organic Geochemistry

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“…The MAAT and MAP values of each sampling site were then extracted using Spatial Analyst Tools in the ArcGIS software. Following Ding et al (2015), we also extracted MAAT and MAP for sites from previous studies of Günther et al (2014) and Yang et al (2014). Overall, 127 out of the total 131 sites had a strong correlation with the reported data (R 2 =0.94 for MAAT and R 2 =0.95 for MAP), suggesting that our method was reliable to obtain actual climate data for exploring the relationship between environmental variables and distribution of brGDGTs in Chinese soils.…”

Section: Data Collection For Maat and Mapmentioning

confidence: 87%

“…Incorporated with previously published dataset of Chinese soils (Günther et al, 2014;Wang et al, 2014;Sun et al 1) ; Yang et al, 2014 and references therein), the relationship between rCBT and soil pH is summarized by the following equation:…”

Section: Figurementioning

confidence: 99%

Branched tetraether lipids in Chinese soils: Evaluating the fidelity of MBT/CBT proxies as paleoenvironmental proxies

Zheng

Zhang

Chen

et al. 2016

Sci. China Earth Sci.

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The ubiquitous occurrence of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in soils has allowed development of new proxies for reconstruction of past climate and environment. The methylation and cyclization degrees of brGDGTs, expressed as MBT and CBT, respectively, are reported to be mainly controlled by mean annual air temperature (MAAT) and soil pH. However, the brGDGT-derived temperatures and soil pH scatter widely when data from different environmental conditions are considered. In this study, we collected over 300 soil samples from China, which are representative of humid (Xishuangbanna, Guangzhou, and Shanghai), semi-arid (Dongying) and semi-arid/arid (Lanzhou, Tibetan Plateau) regions. Collectively we have the most extensive dataset that broadly characterizes the distribution of brGDGTs according to climate zones in China. The overall data demonstrate that the MBT/CBT derived temperatures better match the measured MAATs in humid and non-alkaline regions than those from regions of low MAP (<400 mm/yr) and above neutral soil pH (>7.0-7.5). Similarly, CBT describes soil pH much better in humid and non-alkaline soils than in semi-arid/arid and alkaline soils; the semi-arid/arid and alkaline soils tend to show a positive correlation between soil pH and CBT, which contradicts that in the humid and non-alkaline soils. While soil pH, MAAT and mean annual precipitation (MAP) are dominating factors controlling the brGDGT distribution across all climate zones, conductivity, total organic carbon and total nitrogen, as well as soil water content can also play an important role locally. Removing brGDGT-II resulted in a revised CBT index that provides more accurate estimation of pH, especially in semi-arid/arid and alkaline soils. The overall Chinese dataset demonstrates that continental air temperature derived from brGDGT-proxies can vastly deviate from real measurements and should be used with extreme caution in paleo-climate or -environment studies.

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Distribution of bacterial and archaeal ether lipids in soils and surface sediments of Tibetan lakes: Implications for GDGT-based proxies in saline high mountain lakes

Cited by 70 publications

References 60 publications

Quaternary ecological responses and impacts of the Indian Ocean Summer Monsoon at Nam Co, Southern Tibetan Plateau

Quaternary ecological responses and impacts of the Indian Ocean Summer Monsoon at Nam Co, Southern Tibetan Plateau

Assessment of branched GDGTs as temperature proxies in sedimentary records from several small lakes in southwestern Greenland

Branched tetraether lipids in Chinese soils: Evaluating the fidelity of MBT/CBT proxies as paleoenvironmental proxies

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