Time-integrated δ²H in n-alkanes and carbohydrates from boreal needles reveal intra-annual physiological and environmental signals
Data files
Jan 28, 2025 version files 57.92 KB
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Angove_etal_NANSC_2025.xlsx
47.44 KB
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README.md
10.48 KB
Abstract
This dataset is supplementary to the article, 'Time-integrated δ²H in n-alkanes and carbohydrates from boreal needles reveal intra-annual physiological and environmental signals'. In the article, we used time integrated (a.k.a., time aggregated) variables, to identify meaningful physiological and environmental interpretations from the hydrogen isotope ratio (δ²H) of leaf n-alkanes and carbohydrates. We conducted an intra-annual survey of five Scots Pine (Pinus sylvestris L.) trees in a coniferous forest in Hyytiälä, Finland. During 2019, we sampled one year-old needles and current-year needles from the trees, biweekly. We measured the δ2H of their n-alkanes (δ2Halkane), water-soluble carbohydrates (δ²HWSC) and starch (δ²Hstarch). We also measured the concentrations of total lipid extracts, water-soluble carbohydrates and starch. We modelled source water δ2H, leaf water δ2H, and leaf water 2H enrichment above source water; model specifications are described thoroughly in the original article. This dataset includes time-integrated versions of these modelled values used for analysis in this article.
README: Time-integrated δ²H in n-alkanes and carbohydrates from boreal needles reveal intra-annual physiological and environmental signals
https://doi.org/10.5061/dryad.xpnvx0krq
Description of the data and file structure
This dataset is supplementary to the article, 'Time-integrated δ²H in n-alkanes and carbohydrates from boreal needles reveal intra-annual physiological and environmental signals'. In the article, we used time integrated (a.k.a., time aggregated) variables, to identify meaningful physiological and environmental interpretations from the hydrogen isotope ratio (δ²H) of leaf n-alkanes and carbohydrates. We conducted an intra-annual survey of five Scots Pine (Pinus sylvestris L.) trees in a coniferous forest in Hyytiälä, Finland. During 2019, we sampled one year-old needles and current-year needles from the trees, biweekly. We measured the δ²H of their n-alkanes (δ²Halkane), water-soluble carbohydrates (δ²HWSC) and starch (δ²Hstarch). We also measured the concentrations of total lipid extracts, water-soluble carbohydrates and starch. We modelled source water δ²H, leaf water δ²H, and leaf water ²H enrichment above source water; model specifications are described thoroughly in the original article. This dataset includes time-integrated versions of these modelled values used for analysis in this article.
Files and variables
File: Angove_etal_NANSC_2025.xlsx
Description: Three Microsoft Excel worksheets, each containing a different dataset. Missing values are marked as 'NA'.
Variables
Carbohydrate_d2H worksheet
- Tree_ID: The identification number for an individual tree
- d2H: Measured hydrogen isotope ratio (VSMOW, ‰)
- Date: Date of sampling (Format: YYYY-MM-DD)
- Sample_type: '0N' or '1N'. '0N' = Current-year needles, '1N' = One year-old needles
- Pool: The compound or mixture being measured
- Modelled_water_D2H.Day0: The modelled needle water hydrogen isotope enrichment above source water (‰) on the day of sampling
- CG_peclet_H_abs.Day0: The modelled needle water hydrogen isotope ratio (VSMOW, ‰) on the day of sampling
- Gapfilledmeasured_d2Hsw.Day0: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰) on the day of sampling
- Modelled_water_D2H.Day_minus1: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the day of sampling and the day that preceded it
- CG_peclet_H_abs.Day_minus1: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the day of sampling and the day that preceded it
- Gapfilledmeasured_d2Hsw.Day_minus1: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the day of sampling and the day that preceded it
- Modelled_water_D2H.Day_minus2: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the day of sampling and the two days preceding it
- CG_peclet_H_abs.Day_minus2: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the day of sampling and the two days preceding it
- Gapfilledmeasured_d2Hsw.Day_minus2: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the day of sampling and the two days preceding it
- Modelled_water_D2H.Day_minus3: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the day of sampling and the three days preceding it
- CG_peclet_H_abs.Day_minus3: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the day of sampling and the three days preceding it
- Gapfilledmeasured_d2Hsw.Day_minus3: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the day of sampling and the three days preceding it
- Modelled_water_D2H.Day_minus4: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the day of sampling and the four days preceding it
- CG_peclet_H_abs.Day_minus4: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the day of sampling and the four days preceding it
- Gapfilledmeasured_d2Hsw.Day_minus4: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the day of sampling and the four days preceding it
Alkane_d2H worksheet
- Date: Date of sampling (Format: YYYY-MM-DD)
- Sample_type: '0N' or '1N'. '0N' = Current-year needles, '1N' = One year-old needles
- d2H: Measured hydrogen isotope ratio (VSMOW, ‰)
- Tree_ID: The identification number for an individual tree
- Pool: The compound or mixture being measured
- Modelled_water_D2H.Week_minus0: The modelled needle water hydrogen isotope enrichment above source water (‰) on the day of sampling
- CG_peclet_H_abs.Week_minus0: The modelled needle water hydrogen isotope ratio (VSMOW, ‰) on the day of sampling
- Gapfilledmeasured_d2Hsw.Week_minus0: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰) on the day of sampling
- Modelled_water_D2H.Week_minus1: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the week preceding sampling
- CG_peclet_H_abs.Week_minus1: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the week preceding sampling
- Gapfilledmeasured_d2Hsw.Week_minus1: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the week preceding sampling
- Modelled_water_D2H.Week_minus2: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the two weeks preceding sampling
- CG_peclet_H_abs.Week_minus2: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the two weeks preceding sampling
- Gapfilledmeasured_d2Hsw.Week_minus2: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the two weeks preceding sampling
- Modelled_water_D2H.Week_minus3: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the three weeks preceding sampling
- CG_peclet_H_abs.Week_minus3: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the three weeks preceding sampling
- Gapfilledmeasured_d2Hsw.Week_minus3: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the three weeks preceding sampling
- Modelled_water_D2H.Week_minus4: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the four weeks preceding sampling
- CG_peclet_H_abs.Week_minus4: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the four weeks preceding sampling
- Gapfilledmeasured_d2Hsw.Week_minus4: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the four weeks preceding sampling
- Modelled_water_D2H.Week_minus5: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the five weeks preceding sampling
- CG_peclet_H_abs.Week_minus5: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the five weeks preceding sampling
- Gapfilledmeasured_d2Hsw.Week_minus5: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the five weeks preceding sampling
- Modelled_water_D2H.Week_minus6: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the six weeks preceding sampling
- CG_peclet_H_abs.Week_minus6: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the six weeks preceding sampling
- Gapfilledmeasured_d2Hsw.Week_minus6: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the six weeks preceding sampling
- Modelled_water_D2H.Week_minus7: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the seven weeks preceding sampling
- CG_peclet_H_abs.Week_minus7: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the seven weeks preceding sampling
- Gapfilledmeasured_d2Hsw.Week_minus7: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the seven weeks preceding sampling
- Modelled_water_D2H.Week_minus8: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the eight weeks preceding sampling
- CG_peclet_H_abs.Week_minus8: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the eight weeks preceding sampling
- Gapfilledmeasured_d2Hsw.Week_minus8: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the eight weeks preceding sampling
- Modelled_water_D2H.Week_minus9: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the nine weeks preceding sampling
- CG_peclet_H_abs.Week_minus9: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the nine weeks preceding sampling
- Gapfilledmeasured_d2Hsw.Week_minus9: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the nine weeks preceding sampling
- Modelled_water_D2H.Week_minus10: The modelled needle water hydrogen isotope enrichment above source water (‰), an aggregated average of the ten weeks preceding sampling
- CG_peclet_H_abs.Week_minus10: The modelled needle water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the ten weeks preceding sampling
- Gapfilledmeasured_d2Hsw.Week_minus10: Gapfilled measured source water hydrogen isotope ratio (VSMOW, ‰), an aggregated average of the ten weeks preceding sampling
Concentrations worksheet
- Date: Date of sampling (Format: YYYY-MM-DD)
- Sample_type: '0N' or '1N'. '0N' = Current-year needles, '1N' = One year-old needles
- Conc_mgg_mean: Mean concentration (mg per g dried sample)
- Conc_mgg_se: Standard error of concentration (mg per g dried sample)
- Pool: The compound or mixture being measured