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TP088 – Simplified metadata

← Back to TP088 detail

Dataset

Database Code
TP088
Title
Population dynamics of young forest stands as affected by density and nutrient regime in the Andrews Experimental Forest, 1981-1997
Abstract
To test hypotheses concerning feedback mechamisms (competition and mortality) which effect the dynamics of plant population development. Specifically, to test if manipulation of site quality (through fertilization) or the variance in individual tree leaf area (through pruning) will produce changes in the dominance hierarchy and thus in the growth mode of stands as they approach self-thinning (mortality).
Keywords
communities; populations; plant ecology; population dynamics; stand density; succession; primary production; growth; fertilization; fertilizer; forests; plants; Long-Term Ecological Research (LTER); populations; primary production
Date begin
1981-01-01
Date end
1997-01-01
Principal Investigator
David A. Perry

Entities

  1. TP08801
  2. TP08802
  3. TP08803
  4. TP08804
  5. TP08805
  6. TP08806
  7. TP08807

1. TP08801 - Attribute list

TP08801 - attributes
Attribute Type Domain Minimum Maximum Unit
DATACODE varchar freetext
FORMAT numeric(1) range 1.0000 1.0000 number
SITE varchar enum
DENSITY varchar enum
TMT varchar enum
YEAR numeric(1) range 1981.0000 1981.0000 year (yyyy)
PLOT15TR numeric(1) range 4.0000 34.0000 number
PLOT15ST numeric(1) range 1.0000 57.0000 number
PLOT35TR numeric(1) range 3.0000 39.0000 number
PLOT35ST numeric(1) range 3.0000 61.0000 number
PLOTSIZE numeric(0.010000) range 0.0100 0.1000 hectares
CALCDENS numeric(0.010000) range 123.5500 8895.4805 number

2. TP08802 - Attribute list

TP08802 - attributes
Attribute Type Domain Minimum Maximum Unit
DATACODE varchar freetext
FORMAT numeric(1) range 2.0000 2.0000 number
SITE varchar enum
DENSITY varchar enum
TMT varchar enum
GROWTHYR numeric(1) range 1981.0000 81.0000 year (yyyy)
YEAR numeric(1) range 1981.0000 1996.0000 year (yyyy)
MONTH numeric(1) range 4.0000 12.0000 month of year
DAY numeric(1) range 1.0000 31.0000 day of month
TREENO numeric(1) range 1.0000 290.0000 number
SPECIES varchar enum
STATE varchar enum
DBH numeric(0.100000) range 0.4000 347.0000 centimeters
HEIGHT numeric(0.100000) range 15.0000 997.0000 meters
BARK1 numeric(1) range 1.0000 30.0000 millimeters
GR1 numeric(1) range 1.0000 22.0000 millimeters
PRE1 numeric(1) range 4.0000 55.0000 millimeters
TOT1 numeric(1) range 13.0000 92.0000 millimeters
SAP1 numeric(1) range 8.0000 85.0000 millimeters
BARK2 numeric(1) range 2.0000 51.0000 millimeters
GR2 numeric(1) range 1.0000 25.0000 millimeters
PRE2 numeric(1) range 4.0000 55.0000 millimeters
TOT2 numeric(1) range 18.0000 116.0000 millimeters
SAP2 numeric(1) range 5.0000 90.0000 millimeters
FLAGBAD varchar enum
MEASDATE varchar enum
COND varchar enum
NOTES varchar freetext

3. TP08803 - Attribute list

TP08803 - attributes
Attribute Type Domain Minimum Maximum Unit
DATACODE varchar freetext
FORMAT numeric(1) range 3.0000 3.0000 number
SITE varchar enum
DENSITY varchar enum
TMT varchar enum
GROWTHYR numeric(1) range 1981.0000 1981.0000 year (yyyy)
YEAR numeric(1) range 1981.0000 1982.0000 year (yyyy)
MONTH numeric(1) range 5.0000 9.0000 month of year
DAY numeric(1) range 2.0000 28.0000 day of month
OLDNO numeric(1) range 1.0000 200.0000 number
TREENO numeric(1) range 1.0000 286.0000 number
STATUS varchar enum

4. TP08804 - Attribute list

TP08804 - attributes
Attribute Type Domain Minimum Maximum Unit
DATACODE varchar freetext
FORMAT numeric(1) range 4.0000 4.0000 number
SITE varchar enum
DENSITY varchar enum
TMT varchar enum
YEAR numeric(1) range 1983.0000 1987.0000 year (yyyy)
MONTH numeric(1) range 10.0000 11.0000 month of year
DAY numeric(1) range 1.0000 28.0000 day of month
SPECIES varchar enum
DBH numeric(0.100000) range 1.9000 124.0000 centimeters
SAP1 numeric(1) range 5.0000 36.0000 millimeters
GR1 numeric(1) range 1.0000 13.0000 millimeters
PRE1 numeric(1) range 5.0000 29.0000 millimeters
SAP2 numeric(1) range 6.0000 38.0000 millimeters
GR2 numeric(1) range 2.0000 13.0000 millimeters
PRE2 numeric(1) range 9.0000 36.0000 millimeters
BARK1 numeric(1) range 1.0000 6.0000 millimeters
BARK2 numeric(1) range 1.0000 5.0000 millimeters
TOT1 numeric(1) range 7.0000 65.0000 millimeters
TOT2 numeric(1) range 16.0000 80.0000 millimeters
AGE_DBH5 numeric(1) range 5.0000 10.0000 year (yyyy)

5. TP08805 - Attribute list

TP08805 - attributes
Attribute Type Domain Minimum Maximum Unit
DATACODE varchar freetext
FORMAT numeric(1) range 5.0000 5.0000 number
SITE varchar enum
DENSITY varchar enum
TMT varchar enum
COVTALL numeric(1) range 0.0000 90.0000 number
NFIX1 varchar enum
COVMED numeric(1) range 5.0000 100.0000 number
NFIX2 varchar enum
COVLOW numeric(1) range 5.0000 100.0000 number
NFIX3 varchar enum

6. TP08806 - Attribute list

TP08806 - attributes
Attribute Type Domain Minimum Maximum Unit
DATACODE varchar freetext
FORMAT numeric(1) range 6.0000 6.0000 number
SITE varchar enum
DENSITY varchar enum
TMT varchar enum
WETWTINT numeric(0.001000) range 20.0000 20.9900 grams
MOIST numeric(1) range 25.0000 41.0000 percent
NH4WET numeric(0.100000) range 0.2000 5.9000 parts per million
SOILINIT numeric(0.010000) range 0.0000 27.9200 grams
WTWTINCV numeric(0.001000) range 20.0000 20.9800 parts per million
NH4INC numeric(0.100000) range 6.7000 25.5000 parts per million
SOILINC numeric(0.010000) range 24.8400 108.1000 parts per million
INIBLANC numeric(0.100000) range 0.1000 0.4000 parts per million
INCBLANC numeric(0.100000) range 0.3000 0.8000 parts per million

7. TP08807 - Attribute list

TP08807 - attributes
Attribute Type Domain Minimum Maximum Unit
DATACODE varchar freetext
FORMAT numeric(1) range 7.0000 7.0000 number
SITE varchar enum
DENSITY varchar enum
TMT varchar enum
YEAR numeric(1) range 1996.0000 1996.0000 year (yyyy)
TOTN numeric(0.010000) range 0.8600 1.2000 percent
TOTP numeric(0.010000) range 0.1600 0.2800 percent
K numeric(0.001000) range 0.6570 1.0740 percent
CA numeric(0.001000) range 0.3580 0.6660 percent
MG numeric(0.001000) range 0.1010 0.1710 percent

Attribute definitions

AGE_DBH5
Age at dbh 5
BARK1
Bark thickness direction 1
BARK2
Bark thickness direction 2
CA
Ca
CALCDENS
Density as calculated by T. Bell
COND
Tree condition code
COVLOW
Low cover: number of ground-cover plants lower than knee-height competing with the study trees
COVMED
Medium cover: number of shrubs, stumps, or sprouts at shoulder height competing with the study trees
COVTALL
Tall cover: number of trees competing with at least 10% of the crowns of study trees
DATACODE
Data set code
DAY
Day of data collection
DBH
Diameter at breast height
DENSITY
Stocking density level
FLAGBAD
Indicates whether diameter value may be a field error
FORMAT
Format number
GR1
Growth increment of last 2 years, direction 1
GR2
Growth increment of last 2 years, direction 2
GROWTHYR
Growth year sample was taken
HEIGHT
Total tree height
INCBLANC
Ammonia concentration in blank vial solutions for incubations
INIBLANC
Ammonia concentration in blank vial solutions
K
K
MEASDATE
Indicates whether height was measured in a different year
MG
Mg
MOIST
Percent moisture of soil
MONTH
Month of data collection
NFIX1
Indicates whether competing trees are N-fixers
NFIX2
Indicates whether competing shrubs, stumps or sprouts are N-fixers
NFIX3
Indicates whether ground-cover plants are N-fixers
NH4INC
Ammonia concentration in solution extracted from soil after incubation
NH4WET
Ammonia concentration in solution extracted from soil
NOTES
Comments
OLDNO
Tree tag number originally assigned
PLOT15ST
Number of stumps in a density plot centered at a random distance and direction from tree # 15
PLOT15TR
Number of trees in a density plot centered at a random distance and direction from tree # 15
PLOT35ST
Number of stumps in a density plot centered at a random distance and direction from tree # 15
PLOT35TR
Number of trees in a density plot centered at a random distance and direction from tree # 35
PLOTSIZE
Area of each circular density plot
PRE1
Pre-thinning ring measurements together (rings 4 - 8), direction 1
PRE2
Pre-thinning ring measurements together (rings 4 - 8), direction 2
SAP1
Sapwood thickness direction 1
SAP2
Sapwood thickness direction 2
SITE
Site identification code
SOILINC
Ammonia concentration in soil adjusted for weight, water after incubation
SOILINIT
Ammonia concentration in the soil adjusted for weight, water
SPECIES
Species code according to Garrison et al., 1972
STATE
Tree condition
STATUS
Code indicating whether tree was alive, cut, or delayed height measurement
TMT
Type of treatment applied to plots within stands
TOT1
Thickness of last 10 years growth, direction 1
TOT2
Thickness of last 10 years growth, direction 2
TOTN
Total N
TOTP
Total P
TREENO
Permanent tree tag number
WETWTINT
Net weight of soil before incubation
WTWTINCV
Wet weight of soil before incubation
YEAR
Year of data collection

Enumerated domains

Enumerated domain for attribute: SITE

Codes for SITE
Code Description
L701 UNIT L701
L107 UNIT L107
L111 UNIT L111
L405 UNIT L405

Enumerated domain for attribute: DENSITY

Codes for DENSITY
Code Description
C Control;no thinning within the stand
M Medium;density was reduced to 25% of maximum stand density index
L Low;density was reduced to 15% of maximum stand density index

Enumerated domain for attribute: TMT

Codes for TMT
Code Description
F Fertilized
PF Fertilized and pruned
C Control
P Pruned

Enumerated domain for attribute: SPECIES

Codes for SPECIES
Code Description
ABAM Abies amabilis
ABPR Abies procera
PSME Pseudotsuga menziesii
THPL Thuja plicata
TSHE Tsuga heterophylla

Enumerated domain for attribute: STATE

Codes for STATE
Code Description
1 Dead
Alive

Enumerated domain for attribute: FLAGBAD

Codes for FLAGBAD
Code Description
  Diameter value appears to be error-free
* If present then the diameter value is suspected of being a field error

Enumerated domain for attribute: MEASDATE

Codes for MEASDATE
Code Description
  Height measured on date listed in the data file
* Var 'height' measured in 1982, refer to file tp8803 for date

Enumerated domain for attribute: COND

Codes for COND
Code Description
6 Leaning
7 Animal damage to base (scars)
3 Snow bent
5 Small tree, broken top, probably will live
8 Animal damage to crown
2 Broken top-dead
4 Phellinus infection

Enumerated domain for attribute: STATUS

Codes for STATUS
Code Description
  Alive
H Alive, height measured on date listed-dbh measured at a dif- ferent date listed in file tp8802
C Cut after initially being numbered in 1981-does not appear in data set

Enumerated domain for attribute: NFIX1

Codes for NFIX1
Code Description
  Not nitrogen fixer
F Nitrogen fixer

Enumerated domain for attribute: NFIX2

Codes for NFIX2
Code Description
  Not nitrogen fixer
F Nitrogen fixer

Enumerated domain for attribute: NFIX3

Codes for NFIX3
Code Description
  Not nitrogen fixer
F Nitrogen fixer