Concentration of branched glycerol dialkyl glycerol tetraethers in settling particles of Lake Chala from September 2010- January 2015

DOI

Settling particles 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 collected monthly at 35 m water depth from August 2010 to January 2015 from mid-lake position. The collected material was allowed to settle and stored frozen after decantation of excess water. Prior to analysis, the samples were thawed, filtered over pre-combusted glass fibre filters, and the frozen and freeze dried. Bulk mass flux is expressed as mg m-2 d-1. The concentration of branched glycerol dialkyl glycerol tetraethers (brGDGTs) in the settling particles was 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.922780
Related Identifier 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.922780
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 1325 data points
Discipline Earth System Research
Spatial Coverage (37.700 LON, -3.317 LAT); Lake Chala, East Africa
Temporal Coverage Begin 2010-08-31T00:00:00Z
Temporal Coverage End 2015-01-31T00:00:00Z