Impact of seasonal hydrological variation on the distributions of tetraether lipids along the Amazon River in the central Amazon basin: implications for the MBT/CBT paleothermometer and the BIT index

Zell, Claudia; Kim, Jung-Hyun; Abril, Gwénaël; Sobrinho, Rodrigo de Lima; Dorhout, Denise J C; Damsté, Jaap S. Sinninghe

doi:10.3389/fmicb.2013.00228

Cited by 47 publications

(46 citation statements)

References 58 publications

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“…However, the concentrations of brGDGTs in the wetland soils and river SPOM are statistically indistinguishable and, thus, it is not possible to use the brGDGTs as a specific OM source indicator. This is in line with the idea that brGDGTs can be produced in soils (e.g., Weijers et al, 2006), rivers (e.g., Zell et al, 2013a;De Jonge et al, 2015) and lake waters (e.g., Tierney et al, 2010;Buckles et al, 2014). On the other hand, riverine SPOM is the most likely OM source for the substantially increased concentration of crenarchaeol in the SOM of the floodplain lakes if compared to other sources (Fig.…”

Section: Sources Of Sedimentary Organic Matter In the Floodplain Lakessupporting

confidence: 71%

“…Accordingly, the relative amount of brGDGTs to the crenarchaeol, the so-called Branched and Isoprenoid Tetraether (BIT) index, have been proposed to quantify the OC proportion originating from soils and aquatic environments (e.g., Hopmans et al, 2004;Herfort et al, 2006;Belicka and Harvey, 2009;Smith et al, 2010). Previously, this method was successfully applied in rivers and floodplain lakes of the Amazon basin (e.g., Kim et al, 2012;Zell et al, 2013a;Moreira et al, 2014). A comparison between lignin phenols and GDGTs as markers for terrestrial OC has been performed in marine and lacustrine systems (e.g., Smith et al, 2010).…”

Section: R L Sobrinho Et Al: Spatial and Seasonal Contrasts Of Sedmentioning

confidence: 99%

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Spatial and seasonal contrasts of sedimentary organic matter in floodplain lakes of the central Amazon basin

et al. 2016

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Abstract. In this study, we investigated the seasonal and spatial pattern of sedimentary organic matter (SOM) in five floodplain lakes of the central Amazon basin (Cabaliana, Janauaca, Canaçari, Mirituba and Curuai) which have different morphologies, hydrodynamics and vegetation coverages. Surface sediments were collected in four hydrological seasons: low water (LW), rising water (RW), high water (HW) and falling water (FW) in 2009 and 2010. We investigated commonly used bulk geochemical tracers such as the C : N ratio and the stable isotopic composition of organic carbon (δ 13 C org ). These results were compared with lignin phenol parameters as an indicator of vascular plant detritus and branched glycerol dialkyl glycerol tetraethers (brGDGTs) to trace the input of soil organic matter (OM) from land to the aquatic settings. We also applied the crenarchaeol as an indicator of aquatic (rivers and lakes) OM. Our data showed that during the RW and FW seasons, the surface sediments were enriched in lignin and brGDGTs in comparison to other seasons. Our study also indicated that floodplain lake sediments primarily consisted of allochthonous, C 3 plant-derived OM. However, a downstream increase in C 4 macrophyte-derived OM contribution was observed along the gradient of increasing open waters -i.e., from upstream to downstream. Accordingly, we attribute the temporal and spatial difference in SOM composition to the hydrological dynamics between the floodplain lakes and the surrounding flooded forests.

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Section: Sources Of Sedimentary Organic Matter In the Floodplain Lakessupporting

confidence: 71%

Section: R L Sobrinho Et Al: Spatial and Seasonal Contrasts Of Sedmentioning

confidence: 99%

Spatial and seasonal contrasts of sedimentary organic matter in floodplain lakes of the central Amazon basin

et al. 2016

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“…Figure 4 Spatial distribution of the relative abundance of the six diols studied (C 28 1,13, C 28 1,14, C 32 1,15, C 30 1,13, C 30 1,14 and C 30 1,15) and, for comparison, the BIT index (from Kim et al 2012, Zell et al, 2013a, 2013b in the surface sediments of the Amazon shelf. The map was made by Ocean Data View software, using DIVA gridding.…”

Section: Resultsmentioning

confidence: 99%

“…1) were collected as described by Zell et al (2014). These samples have been previously studied for GDGTs by Kim et al (2012), Zell et al (2013aZell et al ( , 2013bZell et al ( , 2014 and for long chain glycolipids by Bale et al (2015).…”

Section: Amazon Shelfmentioning

confidence: 99%

The C 32 alkane-1,15-diol as a tracer for riverine input in coastal seas

Lattaud

Kim

Jonge

et al. 2017

Geochimica et Cosmochimica Acta

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(2017). The C32 alkane-1,15-diol as a tracer for riverine input in coastal seas. Geochimica et Cosmochimica Acta, 202,[146][147][148][149][150][151][152][153][154][155][156][157][158] 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. 1The C 32 alkane-1,15-diol as a tracer for riverine input in coastal seas ABSTRACTLong chain alkyl diols are lipids that occur ubiquitously in marine sediments and are used as a proxy for sea surface temperature (SST), using the Long chain Diol Index (LDI), and for upwelling intensity/high nutrient conditions. The distribution of 1,13-and 1,15-diols has been documented in open marine and lacustrine sediments and suspended particulate matter, but rarely in coastal seas receiving a significant riverine, and thus continental organic matter, input. Here we studied the distribution of diols in four shelf seas with major river outflows: the Gulf of Lion, the Kara Sea, the Amazon shelf and the Berau delta, covering a wide range of climate conditions. The relative abundance of the C 32 1,15-diol is consistently higher close to the river mouth and particularly in the suspended particulate matter of the rivers suggesting a terrigenous source. This is supported by statistical analysis which points out a significant positive correlation between the C 32 1,15-diol and the Branched and Isoprenoid Tetraether index, a proxy reflecting soil and riverine input in marine environments. However, the C 32 1,15-diol was not detected in soils and is unlikely to be derived from vegetation, suggesting that the C 32 1,15-diol is mainly produced in rivers. This agrees with the observation that it is a dominant diol in most cultivated freshwater eustigmatophyte algae. We, therefore, suggest that the relative abundance of the C 32 1,15-diol can potentially be used as a proxy for riverine organic matter input in shelf seas. Our results also show that long chain alkyl diols delivered by rivers can substantially affect LDI-reconstructed SSTs in coastal regions close to river mouths.

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“…Compared to the river systems which have been studied previously, like the Amazon (Bendle et al, 2010, Zell et al, 2013a, Congo (Weijers et al, 2007b), Yangtze (Zhu et al, 2011 al., 2014), the Tagus River system is smaller and located in a much drier climate zone. We traced the transport of brGDGTs from source to sink via rivers, identified the source of brGDGTs in marine sediments, and assessed the applicability of the MBT'/CBT proxy in the coastal ocean of the Portuguese margin.…”

Section: Introductionmentioning

confidence: 99%

Transport of branched tetraether lipids from the Tagus River basin to the coastal ocean of the Portuguese margin: consequences for the interpretation of the MBT'/CBT paleothermometer

Zell

Kim

Balsinha³

et al. 2014

Biogeosciences

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Abstract. Branched glycerol dialkyl glycerol tetraethers (brGDGTs), which are thought to be transported from soil to marine sediment by rivers, have been used to reconstruct the mean annual air temperature (MAAT) and soil pH of the drainage basin using the methylation index of branched tetraethers (MBT, recently refined as MBT') and cyclization index of branched tetraethers (CBT) from coastal marine sediment records. In this study, we trace the brGDGTs from source to sink in the Tagus River basin, the longest river system on the Iberian Peninsula, by determining their concentration and distribution in soils, river suspended particulate matter (SPM), riverbank sediments, marine SPM, and marine surface sediments. The concentrations of brGDGTs in river SPM were substantially higher and their distributions were different compared to those of the drainage basin soils. This indicates that brGDGTs are mainly produced in the river itself. In the marine environment, the brGDGT concentrations rapidly decreased with increasing distance from the Tagus estuary. At the same time, the brGDGT distributions in marine sediments also changed, indicating that marine in situ production also takes place. These results show that there are various problems that complicate the use of the MBT'/CBT for paleoreconstructions using coastal marine sediments in the vicinity of a river. However, if the majority of brGDGTs are produced in the river, it might be possible to reconstruct the environmental (temperature and pH) conditions of the river water using appropriate aquatic calibrations, provided that marine core locations are chosen in such a way that the brGDGTs in their sediments are predominantly derived from riverine in situ production.

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Impact of seasonal hydrological variation on the distributions of tetraether lipids along the Amazon River in the central Amazon basin: implications for the MBT/CBT paleothermometer and the BIT index

Cited by 47 publications

References 58 publications

Spatial and seasonal contrasts of sedimentary organic matter in floodplain lakes of the central Amazon basin

Spatial and seasonal contrasts of sedimentary organic matter in floodplain lakes of the central Amazon basin

The C 32 alkane-1,15-diol as a tracer for riverine input in coastal seas

Transport of branched tetraether lipids from the Tagus River basin to the coastal ocean of the Portuguese margin: consequences for the interpretation of the MBT'/CBT paleothermometer

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