Bulk concentration and isotopic information of plant C and N in green leaves and tissues collected from Imnavait watershed during 2003-2005

Abstract: 

Changes in total C and N, d13C and d15N, C:N ratio in green leaves and parts of mosses (for sphagnum, both red and green tips were included) over time since 15NH4 addition in Imnavait watershed.

Project Keywords: 

Data set ID: 

10052

EML revision ID: 

7

Short name: 

20032005gsimplant
People

Keywords: 

Arctic LTER keywords: 

Taxa: 

Dates

Date Range: 

Tuesday, July 1, 2003 to Wednesday, July 20, 2005

Publication Date: 

Saturday, December 12, 2009

Methods: 

Prior to 15N addition on 1-Jul-2003, green leaves and parts of mosses (for Sphagnum spp, both red and green parts were included) of the dominant species were collected from areas adjacent to the 15N addition plots (3m x 6m). After the 15N addition, the same tissues were collected from within the plots 1 and 2 yr later. Within 12 hrs of collection, plant samples were separated by species and tissue type and were dried at 50ยบC.

Prior to post-15N addition sampling, multiple band-transects (each transect = 1m x 6m) were established directly below each labeled plot. The transects ran perpendicular to the hill slope with the upper side (i.e., a side closer to the crest) of each band-transect located at 1, 5, 10, 13, or 15 m from the lower side (i.e., a side closer to the creek) of the labeled plots. Plant samples were taken from >5 randomly selected spots within the plot or transect and combined by plot or transect prior to sorting.

Sites sampled.

Download a comma delimited (csv) or Excel file (includes metadata and data sheets).

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File 20032005gsimplant.csv

Bulk concentration... File Details

Office spreadsheet icon 20032005gsimplant.xls

Excel file with... File Details

Variables Details

(Variables names are in the first line/row of the CSV file and Excel data sheet.)
Date
  • Label: Date
  • Definition: sampling date
  • Type: Date/time
  • Date format: dd-mmm-yyyy
  • Missing values: None specified
Topo
  • Label: Topo
  • Definition: Topolocation at which 15N treatment plots were established and soilcores collected. The 15N treatment plots are located along the hillslope (CR=crest; MS=mid-slope; FS=foot-slope; R=riparian wetsedge)
  • Type: Nominal
  • Missing values: None specified
WT
  • Label: WT
  • Definition: Whether the tundra has watertrack or not. WT = watertrack tussock; NWT= non-watertrack tussock; "." = non tussock tundra.
  • Type: Nominal
  • Missing values: None specified
Plot
  • Label: Plot
  • Definition: 15N addition plot ID
  • Type: Nominal
  • Missing values: None specified
Location
  • Label: Location
  • Definition: Locations each plant type was collected. adj=adjacent to 15N plot (reference sample); 0= within 15N plot; 1, 5, 13, or 15= distance (m) of transect from the 15N addition plots.
  • Type: Nominal
  • Missing values: None specified
Smpl_ID
  • Label: Smpl_ID
  • Definition: Names of species or plant types
  • Type: Nominal
  • Missing values: None specified
Pct_C
  • Label: Pct_C
  • Definition: C content in bulk soil % (w/w)
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
d13C
  • Label: d13C
  • Definition: del-13C values v.s. PDB
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
Pct_N
  • Label: Pct_N
  • Definition: N content in bulk soil % (w/w)
  • Type: Physical quantity
  • Unit: percent
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
d15N
  • Label: d15N
  • Definition: del-15N values v.s. air
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
CN_mol
  • Label: CN_mol
  • Definition: molar C:N ratio
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified