Rapid response of fossil tetraether lipids in lake sediments to seasonal environmental variables in a shallow lake in central China: Implications for the use of tetraether-based proxies

Qian, Shi; Yang, Huan; Dong, Caohui; Wang, Yongbo; Wu, Jie; Pei, Hongye; Dang, Xinyue; Lu, Junhui; Zhao, Siyuan; Xie, Shucheng

doi:10.1016/j.orggeochem.2018.12.007

Cited by 48 publications

(28 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Later, more and more studies reveal that brGDGTs could be produced in situ in lake environments and differ significantly from soil-derived brGDGT distributions (Wang et al, 2012;Loomis et al, 2014;Naeher et al, 2014;Hu et al, 2015;Cao et al, 2017) and stable carbon isotope composition (Weber et al, 2015(Weber et al, , 2018. The findings of intact polar lipid of brGDGTs, indicative of fresh microbial products, in lake water suspended particulate matter (SPM) and surface sediments (Tierney et al, 2012;Schoon et al, 2013;Buckles et al, 2014a;Qian et al, 2019) further confirm the in situ production of brGDGTs. Nevertheless, the brGDGT distribution in lake surface sediments has still been found to be strongly correlated with AT.…”

Section: Introductionmentioning

confidence: 82%

“…1a). The modern local climate is controlled mainly by the East Asian monsoon system, with a relatively warm and humid summer resulting from the prevailing EASM from the southeast and a relatively cold and arid winter under the prevailing East Asian winter monsoon (EAWM) from the northwest (Chen et al, 2013(Chen et al, , 2015Rao et al, 2016). The mean annual precipitation is ca.…”

Section: Gonghai Lakementioning

confidence: 99%

“…Moreover, we found the warm-season bias of reconstructed AT is increasingly apparent with the increase in latitude. Here, five lakes, Lower King Pond (Loomis et al, 2014), Qinghai Lake (Wang et al, 2012), Lake Donghu (Qian et al, 2019), Lake Huguang (Hu et al, 2015(Hu et al, , 2016 and Lake Towuli (Tierney and Russell, 2009), were selected to be compared as an example. These lakes are located in different regions spanning a relatively large environmental gradient, and, more importantly, brGDGT data from both the lake surface sediments and the surrounding soils are available.…”

Section: Lacustrine Brgdgt-derived Ats Arementioning

confidence: 99%

“…• 17 E) in southern China (Hu et al, 2015), Lake Donghu (30 • 54 N, 114 • 41 E) in central China (Qian et al, 2019) and Lake Towuli (2 • 30 S, 121 • E) on the island of Sulawesi (Tierney and Russell, 2009). However, they usually yield estimates biased to the warm (summer) seasons in middle-and high-latitude regions (Shanahan et al, 2013;Foster et al, 2016;Dang et al, 2018), such as in Lake Qinghai (36 • 54 N, 100…”

Section: Introductionmentioning

confidence: 99%

“…However, it is presently unclear whether the brGDGTs in lacustrine sediments are mainly produced during the warm season. Investigations into lake water SPM reveal that a higher concentration of brGDGTs in the water column may occur in different seasons, e.g., in winter in Lake Lucerne in central Switzerland (Blaga et al, 2011), Lake Challa in tropical Africa (Buckles et al, 2014a), and Lake Huguang in subtropical southern China (Hu et al, 2016); in spring and autumn in Lower King Pond in temperate northern Vermont, USA (Loomis et al, 2014); and in the warm season in Lake Donghu in central China (Qian et al, 2019). Moreover, the contribution of the aquatic brGDGTs to the sediments is quantitatively unknown and likely minor considering that brGDGT producers favor anoxic conditions (Weijers et al, 2006b;Weber et al, 2018) that usually prevail in bottom water and sediments, which may discount the application of SPM-derived findings to the sedimentary brGDGTs.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Ice formation on lake surfaces in winter causes warm-season bias of lacustrine brGDGT temperature estimates

2020

View full text Add to dashboard Cite

Abstract. It has been frequently found that lacustrine branched glycerol dialkyl glycerol tetraethers (brGDGT)-derived temperatures are warm-season-biased relative to measured mean annual air temperature (AT) in the middle to high latitudes, the mechanism of which, however, is not very clear. Here, we investigated the brGDGTs from catchment soils, suspended particulate matter (SPM) and surface sediments in different water depths in Gonghai Lake in northern China to explore this question. Our results showed that the brGDGT distribution in sediments resembled that in the SPM but differed from the surrounding soils, suggesting a substantial aquatic origin of the brGDGTs in the lake. Moreover, the increase in brGDGT content and decrease in methylation index with water depth in sediments suggested more contribution of aquatic brGDGTs produced from deep or bottom waters. Therefore, established lake-specific calibrations were applied to estimate local mean annual AT. As usual, the estimates were significantly higher than the measured mean annual AT. However, they were similar to (and thus actually reflected) the mean annual lake water temperature (LWT). Interestingly, the mean annual LWT is close to the measured mean warm-season AT, thus suggesting that the apparent warm-season bias of lacustrine brGDGT-derived temperatures could be caused by the discrepancy between AT and LWT. In our study region, ice forms at the lake surface during winter, leading to isolation of the underlying lake water from air and hence higher LWT than AT, while LWT basically follows AT during warm seasons when ice disappears. Therefore, we think that lacustrine brGDGTs actually reflected the mean annual LWT, which is higher than the mean annual AT in our study location. Since the decoupling between LWT and AT in winter due to ice formation is a universal physical phenomenon in the middle to high latitudes, we propose this phenomenon could be also the reason for the widely observed warm-season bias of brGDGT-derived temperatures in other seasonally surface ice-forming lakes, especially in shallow lakes.

show abstract

Section: Introductionmentioning

confidence: 82%

Section: Gonghai Lakementioning

confidence: 99%

Section: Lacustrine Brgdgt-derived Ats Arementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ice formation on lake surfaces in winter causes warm-season bias of lacustrine brGDGT temperature estimates

2020

View full text Add to dashboard Cite

show abstract

Bacterial glycerol tetraethers as a potential tool to trace marine methane cycling

Zhang,

Li,

et al. 2023

Limnology & Oceanography

Self Cite

View full text Add to dashboard Cite

Branched glycerol dialkyl glycerol tetraethers (brGDGTs) are bacterial lipids that can be preserved in sedimentary archives for tens of millions of years and are ubiquitous in diverse environments, including cold seep systems. Their potential implications for detecting methane activity in deep time are, however, hampered by the multiple sources of brGDGTs in cold seeps and the lack of evidence of their stable carbon isotopes. Here, we show that brGDGTs in cold seeps are characterized by depleted stable carbon isotopic compositions of the alkyl moieties (δ13C = −32.9‰ to −82.7‰), indicating a methane metabolizing community origin, which is supported by the association between 16S rRNA genes and brGDGTs. We further identify unique seep‐derived brGDGT signals from the global published dataset by a tree‐based machine‐learning algorithm. This trained model, named light gradient‐boosting machine classification for paleoSEEP (GBM_SEEP), is further applied on a paleorecord across the Paleocene–Eocene Thermal Maximum (PETM), which suggests potential methane emission events during the PETM recovery phase. Collectively, our study links brGDGT production in cold seeps with methane metabolizing communities and provides a potential strategy to capture significant methane emission events using the machine‐learning model, which warrants further investigation.

show abstract

Late Holocene brGDGTs-based quantitative paleotemperature reconstruction from lacustrine sediments on the western Tibetan Plateau

Li,

Liu,

Hou

et al. 2023

Front. Earth Sci.

View full text Add to dashboard Cite

Rapid response of fossil tetraether lipids in lake sediments to seasonal environmental variables in a shallow lake in central China: Implications for the use of tetraether-based proxies

Cited by 48 publications

References 60 publications

Ice formation on lake surfaces in winter causes warm-season bias of lacustrine brGDGT temperature estimates

Ice formation on lake surfaces in winter causes warm-season bias of lacustrine brGDGT temperature estimates

Bacterial glycerol tetraethers as a potential tool to trace marine methane cycling

Late Holocene brGDGTs-based quantitative paleotemperature reconstruction from lacustrine sediments on the western Tibetan Plateau

Contact Info

Product

Resources

About