Supporting Data

Biocomplexity of Patterned Ground Data Report - Permanent Vegetation Plots, Imnavait Creek - Toolik Lake Permanent Vegetation Plots

Permanent Vegetation Plots, Toolik Lake

Table 3. Legend for the environmental variables.

Landforms Exposure Scale
1 Glaciofluvial and other fluvial terraces 1.0 Protected from winds
2 Floodplains 2.0 Moderate exposure to winds
3 Talus slope 3.0 Exposed to winds
4 Colluvial basin 4.0 Very exposed to winds
5 Drained lakes and flat lake margins
6 Lake or pond Site Moisture (modified from Komárková 1983)
7 Hills (including kames and moraines)
8 Disturbed 1.0 Extremely xeric - almost no moisture; no plant growth
2.0 Very xeric - very little moisture; dry sand dunes
Surficial Geology 3.0 Xeric - little moisture; stabilized sand dunes, dry ridge tops
4.0 Subxeric - noticeable moisture; well-drained slopes, ridges
1 Glacial till 5.0 Subxeric to mesic - very noticeable moisture; flat to gently sloping
2 Glaciofluvial deposit 6.0 Mesic-moderate moisture; flat or shallow depressions
3 Active alluvium 7.0 Mesic to subhygric - considerable moisture; depressions
4 Stabilized alluvium 8.0 Subhygric - very considerable moisture; saturated but with < 5 % standing water < 10 cm deep
5 Stream 9.0 Hygric - much moisture; up to 100% of surface under water 10 to 50 cm deep; lake margins, shallow ponds, streams
6 Undifferentiated hill slope colluvium 10.0 Hydric - very much moisture; 100% of surface under water 50 to 150 cm deep; lakes, streams
7 Basin colluvium and organic deposits
8 Drained lake or lacustrine deposits Animal and Human Disturbance
9 Lake or pond
10 Roads and gravel pads 0.0 No sign present
1.0 Some sign present; no disturbance
Glacial Geology 2.0 Minor disturbance or extensive sign
3.0 Moderate disturbance; small dens or light grazing
1 Itkillik I till 4.0 Major disturbance; multiple dens or noticeable trampling
2 Itkillik II till 5.0 Very major disturbance; very extensive tunneling or large pit
3 Itkillik I outwash
4 Itkillik II outwash Stability
5 Bedrock
1.0 Stable
Surficial Geomorphology 2.0 Subject to occasional disturbance
3.0 Subject to prolonged but slow disturbance such as solifluction
1 Frost scars 4.0 Annually disturbed
2 Wetland hummocks 5.0 Disturbed more than once annually
3 Turf hummocks
4 Gelifluction features Soil Units
5 Strangmoor or aligned hummocks
6 High centered polygons or flat centered polygons 1 Pergelic Cryorthent, acid
7 Sorted and non-sorted stripes 2 Perge1ic Cryohemist, euic
8 Palsas 3 Pergelic Cryosaprist, euic
9 Thermokarst pits 4 Lithic Pergelic Cryosaprist
10 Featureless or with < 20% frost scars 5 Pergelic Cryofibrist, euic
11 Well-developed hillslope water tracks and small streams > 50 cm deep 6 Histic Pergelic Cryaquept, acid
12 Poorly developed hill slope water tracks, < 50 cm deep 7 Histic Pergelic Cryaquept, nonacid
13 Gently rolling or irregular microrelief 8 Pergelic Cryaquept, acid
14 Stoney surface 9 Pergelic Cryaquept, nonacid
15 Lakes and ponds 10 Pergelic Cryochrept
16 Disturbed 11 Pergelic Cryumbrept
17 Blockfield 12 Ruptic-Lithic Cryumbrept
13 Pergelic Cryaquoll
Microsites 14 Histic Pergelic Cryaquoll
15 Pergelic Cryoboroll
1 Frost-scar element
2 Inter-frost scar element Soil Moisture (from Komárková 1983)
3 Strang or hummock
4 Flark or interstrang area 1.0 Very dry - very little moisture; soil does not stick together
5 Polygon center 2.0 Dry - little moisture; soil somewhat sticks together
6 Polygon trough 3.0 Damp - noticeable moisture; soil sticks together but crumbles
7 Stripe element 4.0 Damp to moist - very noticeable moisture; soil clumps
8 Inter-stripe element 5.0 Moist - moderate moisture; soil binds but can be broken apart
9 Animal den 6.0 Moist to wet - considerable moisture; soil binds and sticks to fingers
10 Blockfield 7.0 Wet - very considerable moisture; drops of water can be squeezed out of soil
8.0 Very wet - much moisture can be squeezed out of soil
Topographic Position 9.0 Saturated - very much moisture; water drips out of soil
10.0 Very saturated - extreme moisture; soil is more liquid than solid
1 Hill crest or shoulder
2 Side slope  
3 Footslope or toeslope  
4 Flat  
5 Drainage channel  
6 Depression  
7 Lake or pond  
 
Estimated snow duration  
 
1.0 Snow free all year  
2.0 Snow free most of winter; some snow cover persists after storm but is blown free soon afterward  
3.0 Snow free prior to melt out but with snow most of winter  
4.0 Snow free immediately after melt out  
5.0 Snow bank persists 1-2 weeks after melt out  
6.0 Snow bank persists 3-4 weeks after melt out  
7.0 Snow bank persists 4-8 weeks after melt out  
8.0 Snow bank persists 8-12 weeks after melt out  
9.0 Very short snow free period  
10.0 Deep snow all year  

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