Stems were measured, and aged from Ledum palustre and Salix pulchra on LTER Moist Acidic Tussock Tundra 1981 plots summer 1990, Toolik Lake Filed Station, AK.

Abstract: 

Stems were measured, and aged from Ledum palustre and Salix pulchra species on treated plots at Toolik Lake, AK. Stem secondary growth in per cent per year was estimated from the slope of weight per unit length vs. age.

Project Keywords: 

Data set ID: 

1413

EML revision ID: 

10

Short name: 

90gsstem
People

Keywords: 

Arctic LTER keywords: 

Taxa: 

Dates

Date Range: 

Friday, June 22, 1990 to Saturday, June 30, 1990

Publication Date: 

Sunday, December 12, 1993

Methods: 

8 randomly chosen samples of Ledum palustre , and Salix pulchra stems were taken from Greenhouse, fertilized, and control plots on the 1978 Toolik greenhouse plots. The stems were aged, using the bug scars and collected for years 1,3,6,12 and 15. The segments were than counted, weighed and measured.

Sites sampled.

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File 90gsstem.csv

Stems were measured,... File Details

Office spreadsheet icon 90gsstem.xls

Excel file with... File Details

Variables Details

(Variables names are in the first line/row of the CSV file and Excel data sheet.)
BLOCK
  • Label: BLOCK
  • Definition: site block
  • Type: Nominal
  • Missing values: None specified
Date
  • Label: Date
  • Definition: Date of measurement
  • Type: Date/time
  • Date format: DD-MMM-YYYY
  • Missing values: None specified
TREATMENT
  • Label: TREATMENT
  • Definition: control, fert, greenhouse
  • Type: Nominal
  • Missing values: None specified
SPECIES
  • Label: SPECIES
  • Definition: plant species
  • Type: Nominal
  • Missing values: None specified
REP
  • Label: REP
  • Definition: # of replicate
  • Type: Nominal
  • Missing values: None specified
AGE
  • Label: AGE
  • Definition: age of samples
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
#SEG
  • Label: #SEG
  • Definition: # of segments per age
  • Type: Physical quantity
  • Unit: number
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
TOTAL LENGTH
  • Label: TOTAL LENGTH
  • Definition: total length of all segments
  • Type: Physical quantity
  • Unit: millimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
TOTAL WT
  • Label: TOTAL WT
  • Definition: total weight of segments
  • Type: Physical quantity
  • Unit: milligram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
mg_mm
  • Label: mg_mm
  • Definition: average weight/mm
  • Type: Physical quantity
  • Unit: dimensionless
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
mm_seg
  • Label: mm_seg
  • Definition: Average length/segment
  • Type: Physical quantity
  • Unit: millimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
mg_seg
  • Label: mg_seg
  • Definition: average wt/segment
  • Type: Physical quantity
  • Unit: milligram
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified