Vertical and temporal variability in concentration and distribution of thaumarchaeotal tetraether lipids in Lake Superior and the implications for the application of the TEX86 temperature proxy

Woltering, Martijn; Werne, Josef P.; Kish, Jason Louis; Hicks, Randall E.; Damsté, Jaap S. Sinninghe; Schouten, Stefan

doi:10.1016/j.gca.2012.03.024

Cited by 49 publications

(30 citation statements)

References 76 publications

(102 reference statements)

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“…Increased brGDGT fluxes are strongly positively correlated to total particle, organic matter, and biogenic opal fluxes, and brGDGT concentrations are significantly correlated to fluxes of organic matter even after normalization to sedimentary TOC (r = 0.46, p = 0.02). This is consistent with results from sediment traps in Lake Challa (Sinninghe , Lake Lucerne (Blaga et al, 2011), and Lake Superior (Woltering et al, 2012), where brGDGT fluxes increased during periods of increased total sediment flux.…”

Section: Seasonality Of Brgdgt Production and Sedimentationsupporting

confidence: 89%

“…Various hypotheses have been used to explain these increases in brGDGT fluxes, including increased seasonal precipitation leading to increased soil erosion (Sinninghe or redistribution of marginal sediments during storms in a large lake (Woltering et al, 2012). As described above (Section 4.1), brGDGT fluxes are not correlated to precipitation events at Lower King Pond.…”

Section: Seasonality Of Brgdgt Production and Sedimentationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…BrGDGT concentrations in SPM have been shown to increase below lake thermoclines (Sinninghe Bechtel et al, 2010;Blaga et al, 2011;Woltering et al, 2012;Buckles et al, 2014), suggesting increased production of brGDGTs in the hypolimnion. Furthermore, brGDGT fluxes have been found to correlate with total sediment fluxes over the annual cycle (Sinninghe Woltering et al, 2012). This could result from processes such as increased production of lacustrine brGDGTs during periods of increased sedimentation, potentially tied to increased primary production in the surface waters, increased fluxes of brGDGTs and sediment from the landscape, or resuspension of brGDGTs and sediments within the lake itself.…”

Section: Introductionmentioning

confidence: 99%

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Seasonal variability of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in a temperate lake system

Loomis

Russell

Heureux

et al. 2014

Geochimica et Cosmochimica Acta

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Section: Seasonality Of Brgdgt Production and Sedimentationsupporting

confidence: 89%

Section: Seasonality Of Brgdgt Production and Sedimentationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seasonal variability of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in a temperate lake system

Loomis

Russell

Heureux

et al. 2014

Geochimica et Cosmochimica Acta

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“…However, observations suggest that the crenarchaeol regio-isomer (cren'), which is not considered for TEX L 86 , is essential for SST prediction (Shah et al, 2008;Kim et al, 2010) and in certain polar regions does not perform better than TEX 86 (Ho et al, 2014). Surveys of lakes indicate that TEX 86 also correlates with lake surface (Powers et al, 2004(Powers et al, , 2010Blaga et al, 2009) and subsurface temperature (Blaga et al, 2011;Woltering et al, 2012). The relationship between sea/lake surface temperature and TEX 86 may be masked when a large abundance of soil OM is present in marine or lake sediments, since soils also contain isoGDGTs (albeit in low abundance relative to brGDGTs; Weijers et al, 2006b).…”

mentioning

confidence: 99%

Isoprenoid and branched GDGT-based proxies for surface sediments from marine, fjord and lake environments in Chile

Kaiser

Schouten

Kilian

et al. 2015

Organic Geochemistry

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Sinninhe Damsté, J.S. (2015). Isoprenoid and branched GDGTbased proxies for surface sediments from marine, fjord and lake environments in Chile, Organic Geochemistry,[89][90] The NIOZ Repository gives free access to the digital collection of the work of the Royal Netherlands Institute for Sea Research. This archive is managed according to the principles of the Open Access Movement, and the Open Archive Initiative. Each publication should be cited to its original source -please use the reference as presented. When using parts of, or whole publications in your own work, permission from the author(s) or copyright holder(s) is always needed. suggesting in situ production of certain br GDGTs in the water column or surface sediment.For the lakes, MBT'/CBT-based surface air temperature estimates were 3 to 6 °C below MAAT. However, temperature estimates from the lake-specific MBT/CBT global calibration were in good agreement with mean annual surface temperature for all the lakes. The results highlight the need for testing local vs. global calibrations of GDGT-based proxies before their application for palaeoenvironmental reconstruction. Key words:GDGT; TEX 86 ; BIT; MBT'; CBT; calibration; marine; fjord; lake; Chile 3 IntroductionGlycerol dialkyl glyceryl tetraethers (GDGTs) are membrane lipids of archaea and bacteria and occur ubiquitously in aquatic environments and soils (reviewed by Schouten et al., 2013).Thaumarchaeota (formerly Group 1 Crenarchaeota; Brochier-Armanet et al., 2008;Spang et al., 2010), a specific phylogenetic cluster of the Archaea domain occurring widely in marine and lake systems (e.g. Karner et al., 2001; Keough et al., 2003), biosynthesize isoprenoid (iso)GDGTs (structures in Appendix 1) containing 0-4 cyclopentane moieties and crenarchaeol, which has a cyclohexane moiety in addition to four cyclopentane moieties Sinninghe Damsté et al., 2002;Pitcher et al., 2011a). Another group of GDGTs containing branched (br) instead of isoprenoid alkyl chains (Appendix 1) was initially discovered in peat bogs (Sinninghé Damsté et al., 2000) and subsequently shown to be ubiquitous in soils, coastal marine and lake sediments (e.g. Schouten et al., 2000;Weijers et al., 2006a Weijers et al., , 2007aSinninghe Damsté et al., 2008;Huguet et al., 2010; Loomis et al., 2011). Acidobacteria thriving in soil are a likely source of brGDGTs (Weijers et al., 2006a(Weijers et al., , 2009 Sinninghé Damsté et al., 2011, 2014. Although brGDGTs occur mainly in soil and peat, they are probably also produced in situ in the water column and/or the sediments of marine and freshwater (lake and river) environments (e.g. Peterse et al., 2009;Sinninghe Damsté et al., 2009; Tierney and Russell, 2009; Tierney et al., 2010a; Pearson et al., 2011; Zhu et al., 2011; Loomis et al., 2011 Loomis et al., , 2012 Loomis et al., , 2014 Zell et al., 2013; Buckles et al., 2014; De Jonge et al., 2014a; Weijers et al., 2014). Although GDGT-based proxies are being used increasingly for palaeoclimate reconstruction (e.g. Tierney et al., 2...

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An archive of Lake Superior temperature and current measurements, 2005–2020

Austin

Elmer²

2022

Limnol Oceanogr Letters

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Since 2005, investigators at the University of Minnesota, Duluth's Large Lakes Observatory have been maintaining subsurface moorings and surface buoys in Lake Superior to study thermal structure and currents throughout the water column and throughout the year. A single site has been continuously occupied for over 17 years as of the writing of this manuscript, another 10 sites have been occupied for multiple years, and for 3 months in summer 2017 an intensive field campaign occupied 12 sites simultaneously in western Lake Superior. All of these data are available on a publicly accessible archival site hosted by the University of Minnesota.

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Vertical and temporal variability in concentration and distribution of thaumarchaeotal tetraether lipids in Lake Superior and the implications for the application of the TEX86 temperature proxy

Cited by 49 publications

References 76 publications

Seasonal variability of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in a temperate lake system

Seasonal variability of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in a temperate lake system

Isoprenoid and branched GDGT-based proxies for surface sediments from marine, fjord and lake environments in Chile

An archive of Lake Superior temperature and current measurements, 2005–2020

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