Cite as: |
Velescu, A. (2017): <b>Monthly delta 13C and delta 15N isotope measurements in litterfall at NUMEX San Francisco between 2007-2009.</b> <i>Available online (http://www.tropicalmountainforest.org/data_pre.do?citid=1692) from DFG-FOR816dw.</i> |
Resource Description
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Associated entities to this dataset: |
Attribute Name -- Attribute Label |
Unit |
Attribute definition |
datetime
--
Date and Time
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not mapped |
The date and time |
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
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--- Step
1
---
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Title
:
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Date monthly (YYYY-MM-01) |
Description
:
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Date of a month (the day is not relevant and set by default to the 1st of the month). The format is YYYY-MM-01.
This format can be used to indicate that values have been aggergated (average, sum, mean, etc) over a month. More details of the aggregation method are annotated in method steps of the individual attribute or in the title or abstract of the dataset.
This format can also be used to indicate that only the month of an event is known. More infromation have to be added to the dataset description. |
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SampleID
--
ID of the sample
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no unit |
ID of the sample |
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
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--- Step
1
---
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Title
:
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Unique sample ID |
Description
:
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Unique sample identification number |
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PlotID
--
ID of the plot
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no unit |
ID of the plot |
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
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--- Step
1
---
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Title
:
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Plot ID in NUMEX |
Description
:
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Plot ID in NUMEX |
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PlotTreat
--
Treatment of the plot
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no unit |
Treatment of the plot with respect to experiments |
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
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--- Step
1
---
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Title
:
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Treatment in NUMEX |
Description
:
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Treatment in NUMEX plots (control, N, P, NP, Ca) |
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Delta_13C
--
Delta 13C signature
|
Promille |
Delta 13C signature |
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
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--- Step
1
---
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Title
:
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Measurement of d13C isotopes |
Description
:
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Milling with planetary ball mill followed by elemental analysis by thermal combustion and continuous flow isotope ratio mass spectrometry. |
Instrumentation:
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Instrument:
Description: Planetary ball mill with agate or zirconium oxide grinding jars.
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Instrument: Planetary ball mill
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Vendor: Retsch
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Instrumentation:
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Instrument:
Description: Elemental analysis followed by IRMS measurements calibrated against IAEA reference materials (d13C: VPDB, d15N: Air)
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Instrument: EA-IRMS (Detla V Advantage)
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Vendor: ThermoFisher
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Delta_15N
--
Delta 15N signature
|
Promille |
Delta 15N signature |
Method
(Sampling/processing description of the values of
this attribute by one ore more steps.)
|
--- Step
1
---
|
Title
:
|
Measurement of d15N isotopes |
Description
:
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Milling with planetary ball mill followed by elemental analysis by thermal combustion and continuous flow isotope ratio mass spectrometry. |
Instrumentation:
|
Instrument:
Description: Planetary ball mill with agate or zirconium oxide grinding jars.
|
Instrument: Planetary ball mill
|
Vendor: Retsch
|
|
Instrumentation:
|
Instrument:
Description: Elemental analysis followed by IRMS measurements calibrated against IAEA reference materials (d13C: VPDB, d15N: Air)
|
Instrument: EA-IRMS (Detla V Advantage)
|
Vendor: ThermoFisher
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