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  "author": "Darci Rush (Royal Netherlands Institute for Sea 
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  "author": "Darci Rush (Royal Netherlands Institute for Sea 
            
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Research)",
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Research)",
            
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  "author_email": "darci.rush@nioz.nl",
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  "author_email": "darci.rush@nioz.nl",
            
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  "code": "7b.b.jj",
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  "code": "7b.b.jj",
            
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  "contributor": "Royal Netherlands Institute for Sea Research 
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  "contributor": "Royal Netherlands Institute for Sea Research 
            
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(NIOZ)",
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(NIOZ)",
            
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\"Darci\",\"lastname\":\"Rush\",\"orcid\":null,\"affiliation\":\"Royal 
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\"Darci\",\"lastname\":\"Rush\",\"orcid\":null,\"affiliation\":\"Royal 
            
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Netherlands Institute for Sea 
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Netherlands Institute for Sea 
            
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e,\"contactemailaddress\":\"darci.rush@nioz.nl\",\"formatted\":\"Darci 
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e,\"contactemailaddress\":\"darci.rush@nioz.nl\",\"formatted\":\"Darci 
            
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Rush - Royal Netherlands Institute for Sea Research - ORCID:  - 
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Rush - Royal Netherlands Institute for Sea Research - ORCID:  - 
            
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Corresponding Author - darci.rush@nioz.nl\"}]",
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Corresponding Author - darci.rush@nioz.nl\"}]",
            
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  "deposit_date": "2025-04-08",
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  "deposit_date": "2025-04-08",
            
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  "depositor": "Darci Rush (darci.rush@nioz.nl)",
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  "depositor": "Darci Rush (darci.rush@nioz.nl)",
            
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  "distribution_date": "2025-04-08",
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  "distribution_date": "2025-04-08",
            
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  "distributor": "Research Data Management(NIOZ Royal Netherlands 
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  "distributor": "Research Data Management(NIOZ Royal Netherlands 
            
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Institute for Sea Research)",
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Institute for Sea Research)",
            
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  "doi_date_published": "2025-04-08T13:51:52.123343",
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  "doi_date_published": "2025-04-08T13:51:52.123343",
            
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  "funding_references": "[{\"name\":\"NWO\",\"awardnumber\":\"213.176 
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  "funding_references": "[{\"name\":\"NWO\",\"awardnumber\":\"213.176 
            
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\",\"awardtitle\":\"Nu-BHPs\",\"formatted\":\"NWO - 213.176  - 
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\",\"awardtitle\":\"Nu-BHPs\",\"formatted\":\"NWO - 213.176  - 
            
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Nu-BHPs\"}]",
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Nu-BHPs\"}]",
            
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  "maintainer": "Darci",
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  "maintainer": "Darci",
            
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  "maintainer_email": "darci.rush@nioz.nl",
            
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  "metadata_modified": "2025-04-08T12:01:24.811332",
            
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  "name": 
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  "name": 
            
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occurrence-of-nucleoside-bacteriohopanepolyol-in-high-latitude-soils",
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occurrence-of-nucleoside-bacteriohopanepolyol-in-high-latitude-soils",
            
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  "notes": "Recently, the analysis of non-derivatised 
35
  "notes": "Recently, the analysis of non-derivatised 
            
36
bacteriohopanepolyols (BHPs) by ultra-high performance liquid 
36
bacteriohopanepolyols (BHPs) by ultra-high performance liquid 
            
37
chromatography-high resolution mass spectrometry (UHPLC-HRMS2) 
37
chromatography-high resolution mass spectrometry (UHPLC-HRMS2) 
            
38
revealed a broad structural diversity in this lipid class. Multiple 
38
revealed a broad structural diversity in this lipid class. Multiple 
            
39
unique BHPs with nucleoside-type polar head groups (Nu-BHPs) were 
39
unique BHPs with nucleoside-type polar head groups (Nu-BHPs) were 
            
40
identified in soils. Nu-BHPs had previously been identified in high 
40
identified in soils. Nu-BHPs had previously been identified in high 
            
41
abundances in soil organic matter, but only by analysing acetylated 
41
abundances in soil organic matter, but only by analysing acetylated 
            
42
BHPs, which hindered their structural elucidation. In this study, we 
42
BHPs, which hindered their structural elucidation. In this study, we 
            
43
apply the UHPLC-HRMS2direct analysis method for the first time to a 
43
apply the UHPLC-HRMS2direct analysis method for the first time to a 
            
44
soil transect to re-examine the distribution of Nu-BHPs, their 
44
soil transect to re-examine the distribution of Nu-BHPs, their 
            
45
environmental dependencies, and their proxy potential. The presence 
45
environmental dependencies, and their proxy potential. The presence 
            
46
and distribution of Nu-BHPs was examined in 17 surface soils along a 
46
and distribution of Nu-BHPs was examined in 17 surface soils along a 
            
47
~800 km transect in northern Alaska. Our results indicate that certain 
47
~800 km transect in northern Alaska. Our results indicate that certain 
            
48
Nu-BHPs show significant correlation with environmental parameters, 
48
Nu-BHPs show significant correlation with environmental parameters, 
            
49
such as temperature and soil pH. The variation in 9 Nu-BHPs is 
49
such as temperature and soil pH. The variation in 9 Nu-BHPs is 
            
50
captured using a novel ratio, and a regional calibration for warmest 
50
captured using a novel ratio, and a regional calibration for warmest 
            
51
quarter soil temperature (WQST) was developed using a linear 
51
quarter soil temperature (WQST) was developed using a linear 
            
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regression approach (R2 = 0.72). Other calibrations developed for 
52
regression approach (R2 = 0.72). Other calibrations developed for 
            
53
summer air and mean annual temperatures also show strong positive 
53
summer air and mean annual temperatures also show strong positive 
            
54
correlations. As BHPs are ubiquitous in soils globally, this study 
54
correlations. As BHPs are ubiquitous in soils globally, this study 
            
55
highlights the potential benefit of complementing established organic 
55
highlights the potential benefit of complementing established organic 
            
56
proxies for soil pH and temperature (e.g., branched tetraether lipids) 
56
proxies for soil pH and temperature (e.g., branched tetraether lipids) 
            
57
with calibrations based on Nu-BHPs. Nevertheless, the mechanism behind 
57
with calibrations based on Nu-BHPs. Nevertheless, the mechanism behind 
            
58
the environmental dependencies of these BHPs remains unknown. Further 
58
the environmental dependencies of these BHPs remains unknown. Further 
            
59
work to explore the proxy potential as well as the bacterial sources 
59
work to explore the proxy potential as well as the bacterial sources 
            
60
of these lipids should be undertaken, for instance by sampling soils 
60
of these lipids should be undertaken, for instance by sampling soils 
            
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along relevant (soil pH and temperature) gradients.",
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along relevant (soil pH and temperature) gradients.",
            
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  "title": "Occurrence of nucleoside-bacteriohopanepolyol in high 
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  "title": "Occurrence of nucleoside-bacteriohopanepolyol in high 
            
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latitude soils: evidence of environmental controls on bacterial lipid 
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latitude soils: evidence of environmental controls on bacterial lipid 
            
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membrane distributions",
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membrane distributions",
            
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  "version": "1"
            
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}
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}