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  • 1
    Publication Date: 2023-12-02
    Keywords: Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Amazon Rainforest; Atlantic Rainforest; Biome; Branched and isoprenoid tetraether index; Branched GDGTs; Branched glycerol dialkyl glycerol tetraether, IIa', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIb', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIc', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIa', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIb, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIb', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIc, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIc', fractional abundance; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance Ia; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance Ib; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance Ic; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIa; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIb; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIc; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa; Caatinga; Caatinga_soil; Caatinga, Brazil; Cerrado; Cerrado_Transect; Crenarchaeol, fractional abundance; Crenarchaeol regio-isomer, fractional abundance; Cyclization ratio of branched tetraethers of 5-methyl branched glycerol dialkyl glycerol tetraether; Cyclization ratio of branched tetraethers prime; DEPTH, soil; Depth, soil, maximum; Depth, soil, minimum; Event label; High Performance Liquid Chromatography (HPLC/APCI-MS/MS); Isomer ratio of 6-methyl branched glycerol dialkyl glycerol tetraethers; Isoprenoid dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; isoprenoid GDGTs; Isoprenoid glycerol dialkyl glycerol tetraether, 4, fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, humidity index; Isoprenoid glycerol dialkyl glycerol tetraether, isomer index; Isoprenoid glycerol dialkyl glycerol tetraether/branched glycerol dialkyl glycerol tetraether ratio; Isoprenoid monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; LATITUDE; Llanos; LONGITUDE; Methane index; Methylation index of 5-methyl branched glycerol dialkyl glycerol tetraether; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; pH; Precipitation; Sample code/label; Sampling date; Sao_Francisco_River; Sao Francisco River; Soil; Soil profile; SOILS; Soil sample; South America; Temperature; Temperature, annual mean; Type; Xingu; Xingu, Brazil
    Type: Dataset
    Format: text/tab-separated-values, 9436 data points
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  • 2
    Publication Date: 2023-12-02
    Keywords: Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Amazon Rainforest; Atlantic Rainforest; Biome; Branched and isoprenoid tetraether index; Branched GDGTs; Branched glycerol dialkyl glycerol tetraether, IIa', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIb', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIc', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIa', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIb, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIb', fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIc, fractional abundance; Branched glycerol dialkyl glycerol tetraether, IIIc', fractional abundance; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance Ia; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance Ib; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance Ic; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIa; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIb; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIc; Branched Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa; Caatinga; Caatinga_soil; Caatinga, Brazil; Cerrado; Cerrado_Transect; Crenarchaeol, fractional abundance; Crenarchaeol regio-isomer, fractional abundance; Cyclization ratio of branched tetraethers of 5-methyl branched glycerol dialkyl glycerol tetraether; Cyclization ratio of branched tetraethers prime; DEPTH, soil; Depth, soil, maximum; Depth, soil, minimum; Event label; High Performance Liquid Chromatography (HPLC/APCI-MS/MS); Isomer ratio of 6-methyl branched glycerol dialkyl glycerol tetraethers; Isoprenoid dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; isoprenoid GDGTs; Isoprenoid glycerol dialkyl glycerol tetraether, 4, fractional abundance; Isoprenoid glycerol dialkyl glycerol tetraether, humidity index; Isoprenoid glycerol dialkyl glycerol tetraether, isomer index; Isoprenoid glycerol dialkyl glycerol tetraether/branched glycerol dialkyl glycerol tetraether ratio; Isoprenoid monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; Isoprenoid tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; LATITUDE; Llanos; LONGITUDE; Methane index; Methylation index of 5-methyl branched glycerol dialkyl glycerol tetraether; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; pH; Precipitation; Sample code/label; Sampling date; Sao_Francisco_River; Sao Francisco River; Soil; Soil profile; SOILS; Soil sample; South America; Temperature; Temperature, annual mean; Xingu; Xingu, Brazil
    Type: Dataset
    Format: text/tab-separated-values, 4203 data points
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  • 3
    Publication Date: 2023-12-02
    Description: The data set contains branched and isoprenoid GDGT data from modern surface soils and soil profiles across transects in tropical South America. The data covers all major vegetation types including the Atlantic rainforest, the Amazon rainforest, Cerrado types of different density, the Caatinga shrublands and grasslands and riparian forests from the Llanos. The goal of the data collection was to test the impact of the different vegetation types on both branched and isoprenoid GDGT distributions. Measurements were conducted with a HPLC/APCI-MS system on lipid extracts that were further separated into different fractions using column chromatography prior to analysis.
    Keywords: Amazon Rainforest; Atlantic Rainforest; Branched GDGTs; Caatinga; Cerrado; isoprenoid GDGTs; Llanos; pH; Soil; Soil profile; South America; Temperature
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 4
    Publication Date: 2024-02-10
    Keywords: Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Amazon; Amazon River; Biomarkers; BIT index; Branched and isoprenoid tetraether index; Carbon isotopes; Compound-specific Isotopes; DATE/TIME; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Event label; GDGTs; Glycerol dialkyl glycerol tetraethers, fractional abundance Ia; Glycerol dialkyl glycerol tetraethers, fractional abundance Ib; Glycerol dialkyl glycerol tetraethers, fractional abundance Ic; Glycerol dialkyl glycerol tetraethers, fractional abundance IIa5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIa6; Glycerol dialkyl glycerol tetraethers, fractional abundance IIb5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIb6; Glycerol dialkyl glycerol tetraethers, fractional abundance IIc5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIc6; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa6; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIb5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIb6; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIc5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIc6; hydrogen and carbon isotopes; Hydrogen isotopes; hydrogen stable isotopes; Isoprenoid glycerol dialkyl glycerol tetraether, 4, fractional abundance; LATITUDE; Leaf wax; LONGITUDE; MAO123; MAO128; MAO154; MAO155; MAO160; MAO165; MAO170; MAO173; MAO185; MAO189; MAO196; MAO199; MAO202; MAO204; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; n-alkane; n-alkanes; River; STM67; STM73; STM75; STM76; STM80; STM82; Suspended particulate matter; Tetracyclic glycerol dialkyl glycerol tetraether, fractional abundance; Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; Water sample; WS; Xingu River
    Type: Dataset
    Format: text/tab-separated-values, 460 data points
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  • 5
    Publication Date: 2024-02-10
    Description: Lipid biomarkers have been extensively used to reconstruct paleoenvironmental conditions. However, the entrainment of local compounds from source to sink may complicate interpretations. Here we present: (i) glycerol dialkyl glycerol tetraether (GDGT) distributions from the Amazon River and its main tributaries (i.e. Japurá, Içá, Juruá, Jutaí, Madeira, Solimões, Negro, Tapajós and Purus); and (ii) GDGT distributions and n-alkane isotopic compositions of soils and sediments from the Xingu River, a large clearwater River in eastern Amazonia. Our study aimed at understanding the processes and patterns related to distinct GDGT distributions and n-alkane isotopic signatures across lowland Amazonia. Suspended sediment samples from the Amazon Basin were obtained during the low-water season of 2015. Soil and suspended sediment samples from the Xingu Basin were obtained during the low- and high-water seasons of 2011, 2012, 2016 and 2017. Riverbed material was obtained using a Van Veen bottom sampler. Suspended material was concentrated using a Merck Millipore Ultrafiltration system equipped with Pellicon 2 Ultrafiltration cassettes (0.45 μm, 0.5 m2) after pumping up to 100 L of water from 60% of the total water column.
    Keywords: Amazon; Amazon River; Biomarkers; BIT index; Carbon isotopes; Compound-specific Isotopes; GDGTs; hydrogen and carbon isotopes; Hydrogen isotopes; hydrogen stable isotopes; Leaf wax; n-alkane; n-alkanes; Suspended particulate matter; Xingu River
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 6
    Publication Date: 2024-02-10
    Keywords: Acyclic glycerol dialkyl glycerol tetraether, fractional abundance; Amazon; Amazon River; Bacaja; Biomarkers; BIT index; Branched and isoprenoid tetraether index; Carbon isotopes; Compound-specific Isotopes; DATE/TIME; Dicyclic glycerol dialkyl glycerol tetraether, fractional abundance; Event label; GDGTs; GEX-34; GEX-35; Glycerol dialkyl glycerol tetraethers, fractional abundance Ia; Glycerol dialkyl glycerol tetraethers, fractional abundance Ib; Glycerol dialkyl glycerol tetraethers, fractional abundance Ic; Glycerol dialkyl glycerol tetraethers, fractional abundance IIa5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIa6; Glycerol dialkyl glycerol tetraethers, fractional abundance IIb5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIb6; Glycerol dialkyl glycerol tetraethers, fractional abundance IIc5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIc6; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIa6; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIb5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIb6; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIc5; Glycerol dialkyl glycerol tetraethers, fractional abundance IIIc6; hydrogen and carbon isotopes; Hydrogen isotopes; hydrogen stable isotopes; Iriri; Isoprenoid glycerol dialkyl glycerol tetraether, 4, fractional abundance; LATITUDE; Leaf wax; LONGITUDE; Mass; Monocyclic glycerol dialkyl glycerol tetraether, fractional abundance; n-alkane; n-Alkane C29; n-Alkane C29, δ13C; n-Alkane C29, δD; n-Alkane C31; n-Alkane C31, δ13C; n-Alkane C31, δD; n-alkanes; River; Season; Suspended particulate matter; SX-1; SX-10; SX-11; SX-12; SX-13; SX-14; SX-15; SX-16; SX-17; SX-18; SX-19; SX-2; SX-20; SX-21; SX-22; SX-23; SX-24; SX-25; SX-3; SX-4; SX-5; SX-6; SX-7; SX-8; SX-9; Tetracyclic glycerol dialkyl glycerol tetraether, fractional abundance; Tricyclic glycerol dialkyl glycerol tetraether, fractional abundance; Type; van Veen Grab; VGRAB; Water sample; WS; XA_25; XA_35; XA_36; XA_38; XA_73; XA_76; XA-15-L; XA-206; XA-27; XA-31; XA-33; XA-44-B; XA-53-0-1; XA-53-1-2; XA-53-2-3; XA-53-3-4; XA-57; Xingu; Xingu River; XIP-1
    Type: Dataset
    Format: text/tab-separated-values, 1206 data points
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  • 7
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