Concentration of branched glycerol dialkyl glycerol tetraethers in suspended particulate matter of Lake Chala from September 2013- January 2015

DOI

Vertical profiles of temperature, dissolved oxygen (DO), conductivity and pH in the water column of Lake Chala, a small (4.2 km2), deep (~90 m), and permanently stratified tropical crater lake at ~880 m above sea level in East Africa (3°19'S, 37°42'E), were measured at 2 m intervals through the upper 50 m of the water column at monthly intervals between September 2013 and January 2015. In the same time interval, suspended particulate matter (SPM) was collected monthly at 13 discrete depths by filtering 5-10L of water over pre-combusted glass fibre filters. The concentration and fractional abundance of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in SPM was analysed for all depths for the months November 2013 and August 2014, and at 0, 10, 25, 35, 50, 60, 70, and 80 m depth for all other months (total n= 146). The brGDGTs were analyzed using ultra high performance liquid chromatography-mass spectrometry, separating 5-methyl and 6-methyl brGDGT isomers.

Identifier
DOI https://doi.org/10.1594/PANGAEA.922776
Related Identifier References https://doi.org/10.1594/PANGAEA.924859
Related Identifier References https://doi.org/10.5194/bg-17-5443-2020
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.922776
Provenance
Creator Peterse, Francien ORCID logo; van Bree, Loes G J; Baxter, Allix J ORCID logo; De Crop, Wannes ORCID logo; van Grinsven, Sigrid ORCID logo; Villanueva, Laura ORCID logo; Verschuren, Dirk ORCID logo; Sinninghe Damsté, Jaap S ORCID logo
Publisher PANGAEA
Publication Year 2020
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 2862 data points
Discipline Earth System Research
Spatial Coverage (37.700 LON, -3.317 LAT); Lake Chala, East Africa
Temporal Coverage Begin 2013-09-07T00:00:00Z
Temporal Coverage End 2015-01-05T00:00:00Z