Dr. Monica G.Turner
Department of Integrative Biology
University of Wisconsin
430 Lincoln Dr.
Madison, WI 53706
Ecosystem and
Landscape Ecology Lab
 

data

Yellowstone Grid data - 1990

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CLASS IV. DATA STRUCTURAL DESCRIPTORS

A. Data Set File

Identity: YNPgrid90_data.txt

Size: 13500 records, not including header row.

Format and storage mode: ASCII text, tab delimited. No compression scheme was used.

Header information: See variable names in Section B.

Alphanumeric attributes: Uppercase

Special characters/fields: Missing data denoted as “.”

Authentication procedures: Column sums, see table below.

B. Variable information

YEAR: Year sampling took place.  All sampling conducted in July of 1990.

SITE: Name of sampling grid: MLRD=Mallard, MYST=Mystic and HART=Heart

TRANSECT: Letter identifying transect within sampling grid ranging from letters A through J oriented from west to east

POINT: Number identifying sampling point within each transect.  Each transect contained sampling points numbered 1 through 10 oriented from south to north.

SLOPE: Topographic slope (degrees) at each sampling point.

ASPECT: Topographic aspect of sampling point.  Values can include N, S, E, W, NW, NE, SW, SE or X.  A value of X indicates a virtually flat topography.

BURNSEV: Burn severity classes were defined as follows:

0=unburned, no sign of fire effects;
1=light surface burn. Low-intensity surface fire in which canopy trees retain green needles and generally did not die, although some stems scorched. Soil organic layer still largely intact, though burned in small patches. 
2=severe surface burn. High-intensity surface fire with extensive canopy tree mortality, but needles on canopy trees are not consumed by fire; pre-fire soil organic layer largely consumed, but soil covered by dead leaves fallen from the canopy after the fire.
3=crown fire. Needles of canopy trees completely consumed by fire; soil organic layer almost entirely consumed, and soil is bare with no litter.

SUCC: Prefire successional stage classes were derived from sampling a chronosequence of stands that originated following fires at various times in the last 400 years. The resulting classes are defined as follows:

LP0 (0-40 yrs) = Recently burned lodgepole pine stands in the grass to seedling/sapling stage before canopy closure; trees usually < 2 m in height.
LP1 (40-150 yrs) = Closed canopy of even-aged, often dense lodgepole pine; young pole stage.
LP2 (150-300 yrs) = Closed canopy dominated by lodgepole pine; overstory still largely intact; understory may contain small conifers, but is generally open and park like.
LP3 (>300 yrs)=Canopy quite irregular, predominantly of old lodgepole pine but containing some Engelman spruce, subalpine fir and whitebark pine in the pole-sized class; understory usually dense.

SF0, SF1, SF2, SF3 are pre-fire successional stages for spruce-fir forest.  Additional categories included SHR=shrub, BOG=bog, and WET=open water.  

FORB, EPAN, LUAR, ARCO, OFORB Percent cover of various forb classifications. See table below.

GRASS, CAGE, CARO, CALA, OGRASS : Percent cover of various graminoids classifications. See table below.

SHRUB, VASC, and oshrub: Percent cover of various shrub classifications.  See table below.

BARE, MIN, CHARLIT, LITTER, LOG, ROOT, PEBB, COBB, BOULD, MOSS, and WATER: Percent cover of various cover type classifications. See table below.

PINE: Total number of postfire Pinus contorta seedlings (number/ m2).

ARCOSPR, ARCOSDL, CAGESPR, CAROSPR, CARXSDL, COPASDL, EPANSPR, EPANSDL, LUARSPR, LUARSDL, VASCSPR: Number of sprouts per m2 and/or number of seedlings per m2 for various species.  See table below.

Variable Name

Variable definition

Units

Storage Type

Range for Numeric Values

Column sum

OBS

Unique integer code for each observation

N/A

Integer

1-300

N/A

YEAR

Year sampled

N/A

Integer

N/A

N/A

SITE

name of grid

N/A

Character

N/A

N/A

TRANS

Transect letter label

N/A

Character

N/A

N/A

POINT

Sampling point

N/A

Integer

N/A

N/A

SLOP

Slope

degrees

Integer

 

N/A

ASP

Aspect

N/A

Character

N/A

N/A

BURN

Burn severity class

N/A

Character

N/A

N/A

SUCC

Successional stage classification

N/A

Character

N/A

N/A

FORB

Total percent cover of forbs

Percent

Floating point

0-71

2199

EPAN

Percent cover of Epilobium angustifolium

Percent

Floating point

0-43

635

LUAR

Percent cover of Lupinus argenteus

Percent

Floating point

0-19.5

304.5

ARCO

Percent cover of Arnica cordifolia

Percent

Floating point

0-7

116

OFORB

Percent cover of other forbs (except EPAN, ARCO and LUAR)

Percent

Floating point

0-66.5

1141

GRASS

Percent cover of graminoids

Percent

Floating point

0-96.5

4154

CAGE

Percent cover of Carex geyeri

Percent

Floating point

0-50

1341.5

CARO

Percent cover of Carex rossiix

Percent

Floating point

0-32.5

209

CALA

Percent cover of Calamagrostis spp.

Percent

Floating point

0-75

1815.5

OGRASS

Percent cover of all other graminoids (all but CAGE, CARO, CALA)

Percent

Floating point

0-87.5

793

SHRUB

Percent cover of all shrubs

Percent

Floating point

0-72.5

996

VASC

Percent cover of Vaccinium scoparium

Percent

Floating point

0-72.5

855.5

OSHRUB

Percent cover of all other shrubs (except VASC)

Percent

Floating point

0-22

140.5

BARE

Percent cover of bare ground

Percent

Floating point

0-99

15225.5

MIN

Percent cover of exposed mineral soil

Percent

Floating point

0-88

7073.5

CHARLIT

Percent cover of charred litter

Percent

Floating point

0-49.5

2446.5

LITTER

Percent cover of unburned litter

Percent

Floating point

0-90.5

8661.5

LOG

Percent cover of logs

Percent

Floating point

0-63

2481

ROOT

Percent cover of roots

Percent

Floating point

0-20.5

234.5

PEBB

Percent cover of pebbles

Percent

Floating point

0-32.5

607

COBB

Percent cover of cobbles

Percent

Floating point

0-61

327

BOULD

Percent cover of boulders

Percent

Floating point

0-32

178.5

MOSS

Percent cover of moss

Percent

Floating point

0-41.5

342.5

WATER

Percent cover of water

Percent

Floating point

0-34.5

61.5

PINE

Total number of postfire Pinus contorta seedlings per m2

No. / m2

Floating point

0-32

324.5

ARCOSPR

Number of Arnica cordifolia sprouts per m2

No. / m2

Floating point

0-26

440

ARCOSDL

Number of Arnica cordifolia seedlings per m2

No. / m2

Floating point

0-14

69.5

CAGESPR

Number of Carex geyeri sprouts per m2

No. / m2

Floating point

0-64

1819

CAROSPR

Number of Carex rossiix sprouts per m2

No. / m2

Floating point

0-27

435

CARXSDL

Number of Carex sp. seedlings per m2

No. / m2

Floating point

0-13

61

COPASDL

Number of Collinsia parviflora seedlings per m2

No. / m2

Floating point

0-8

12.5

EPANSPR

Number of Epilobium angustifolium sprouts per m2

No. / m2

Floating point

0-42

766.5

EPANSDL

Number of Epilobium angustifolium seedlings per m2

No. / m2

Floating point

0-24

179

LUARSPR

Number of Lupinus argenteus sprouts per m2

No. / m2

Floating point

0-18

174

LUARSDL

Number of Lupinus argenteus seedlings per m2

No. / m2

Floating point

0-1

5

VASCSPR

Number of Vaccinium scoparium sprouts per m2

No. / m2

Floating point

0-156

2715.5

 

Publication(s): Turner, M. G., W. H. Romme, and R. H. Gardner.  1999.  Prefire heterogeneity, fire severity and plant reestablishment in subalpine forests of Yellowstone National Park, Wyoming. International Journal of Wildland Fire 9:21-36.

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