<?xml version="1.0" encoding="UTF-8"?><!--*** Generated from internal PANGAEA metadata schema by dif.xslt ***--><DIF xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.4.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/">
<Entry_ID>PANGAEA_922755</Entry_ID>
<Entry_Title>Global distribution of archaeal biomarkers in wetlands</Entry_Title>
<Data_Set_Citation>
<Dataset_Creator>Blewett, Jerome; Naafs, Bernhard David A; Gallego-Sala, Angela V; Pancost, Richard D; T-GRES peat database collaborators</Dataset_Creator>
<Dataset_Title>Global distribution of archaeal biomarkers in wetlands</Dataset_Title>
<Dataset_Release_Date>2020-09-15</Dataset_Release_Date>
<Dataset_Publisher>PANGAEA</Dataset_Publisher>
<Data_Presentation_Form>Dataset</Data_Presentation_Form>
<Online_Resource>https://doi.pangaea.de/10.1594/PANGAEA.922755</Online_Resource>
</Data_Set_Citation>
<Personnel>
<Role>Investigator</Role>
<First_Name>Jerome</First_Name>
<Last_Name>Blewett</Last_Name>
</Personnel>
<Discipline>
<Discipline_Name>Earth Science</Discipline_Name>
</Discipline>
<Parameters>
<Detailed_Variable>Country</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Area/locality</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Depth, description</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Temperature, annual mean</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Temperature, coldest month</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Temperature, warmest month</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>pH</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>pH, standard deviation</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Isoprenoid acyclic glycerol dialkyl glycerol tetraether, fractional abundance</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Isoprenoid monocyclic glycerol dialkyl glycerol tetraether, fractional abundance</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Isoprenoid dicyclic glycerol dialkyl glycerol tetraether, fractional abundance</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Isoprenoid tricyclic glycerol dialkyl glycerol tetraether, fractional abundance</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Crenarchaeol (peak area)</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Crenarchaeol isomer (peak area)</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Isoprenoid glycerol dialkyl glycerol tetraether, 5 (peak area)</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Crenarchaeol, fractional abundance</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Crenarchaeol isomer, fractional abundance</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Isoprenoid glycerol dialkyl glycerol tetraether, 5, fractional abundance</Detailed_Variable>
</Parameters>
<Parameters>
<Detailed_Variable>Index</Detailed_Variable>
</Parameters>
<ISO_Topic_Category>geoscientificInformation</ISO_Topic_Category>
<Keyword>Archaea</Keyword>
<Keyword>BDGTs</Keyword>
<Keyword>biogeochemistry</Keyword>
<Keyword>crenarchaeol</Keyword>
<Keyword>GDGTs</Keyword>
<Keyword>isomers</Keyword>
<Keyword>Me-GDGTs</Keyword>
<Keyword>pH</Keyword>
<Keyword>Temperature</Keyword>
<Keyword>wetlands</Keyword>
<Data_Set_Progress>Complete</Data_Set_Progress>
<Access_Constraints>unrestricted</Access_Constraints>
<Use_Constraints>CC-BY-4.0: Creative Commons Attribution 4.0 International</Use_Constraints>
<Data_Set_Language>English</Data_Set_Language>
<Data_Center>
<Data_Center_Name>
<Short_Name>PANGAEA</Short_Name>
<Long_Name>Data Publisher for Earth &amp; Environmental Science</Long_Name>
</Data_Center_Name>
<Data_Center_URL>https://www.pangaea.de/</Data_Center_URL>
<Personnel>
<Role>Data Center Contact</Role>
<First_Name>Michael</First_Name>
<Last_Name>Diepenbroek</Last_Name>
<Email>info@pangaea.de</Email>
<Contact_Address>
<Address>Leobener Str.</Address>
<City>Bremen</City>
<Province_or_State>Bremen</Province_or_State>
<Postal_Code>28359</Postal_Code>
<Country>Germany</Country>
</Contact_Address>
</Personnel>
</Data_Center>
<Distribution>
<Distribution_Media>online</Distribution_Media>
<Distribution_Size>9870 data points</Distribution_Size>
<Distribution_Format>text/tab-separated-values</Distribution_Format>
</Distribution>
<Reference>Blewett, Jerome; Naafs, Bernhard David A; Gallego-Sala, Angela V; Pancost, Richard D; T-GRES peat database collaborators (2020): Effects of temperature and pH on archaeal membrane lipid distributions in freshwater wetlands. Organic Geochemistry, 148, 104080, https://doi.org/10.1016/j.orggeochem.2020.104080</Reference>
<Reference>Blewett, Jerome; Naafs, Bernhard David A; Gallego-Sala, Angela V; Pancost, Richard D; T-GRES peat database collaborators (2020): Averaged isoGDGT isomers in global database of wetlands [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.921817</Reference>
<Reference>Naafs, Bernhard David A (2017): Individual biomarker (GDGT) concentration in a global set of peatlands [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.883763</Reference>
<Summary>This is the archaeal GDGT dataset for global peatlands. The first dataset contains biomarker data for each individual sample as for many peatlands we analysed more than one sample. The second dataset contains the averaged data for isoGDGT isomers in all sites that contains both associated pH and temperature measurements. Other biomarker data for these samples can be found here: https://doi.pangaea.de/10.1594/PANGAEA.883763 ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.922755"!</Summary>
<Related_URL>
<URL>https://doi.org/10.1016/j.orggeochem.2020.104080</URL>
<Description>Effects of temperature and pH on archaeal membrane lipid distributions in freshwater wetlands</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.pangaea.de/10.1594/PANGAEA.883763</URL>
<Description>Individual biomarker (GDGT) concentration in a global set of peatlands</Description>
</Related_URL>
<Related_URL>
<URL>https://doi.pangaea.de/10.1594/PANGAEA.921817</URL>
<Description>Averaged isoGDGT isomers in global database of wetlands</Description>
</Related_URL>
<Metadata_Name>DIF</Metadata_Name>
<Metadata_Version>9.4</Metadata_Version>
<DIF_Creation_Date>2020-09-15</DIF_Creation_Date>
<Last_DIF_Revision_Date>2026-04-30</Last_DIF_Revision_Date>
</DIF>
