Toolik Lake Area Vegetation

Available data:
PDF	GE	Metadata	GIS data	GIS data

Barren
1. 1. Anthropogenic barren.
  
  Unvegetated natural and anthropogenic barrens.
  23.8 ha, 1.2% of map
2. 2. Lichens on rock.
  
  Xeric blockfields, glacial erratics.
  3.9 ha, 0.2% of map
3. 3. Partially vegetated barrens and revegetated disturbed areas.
  
  Partially vegetated disturbed barrens on gravel pads, abandoned roads, bulldozed areas.
  24.9 ha, 1.2% of map
Moist Graminoid Tundra
1. 4. Tussock sedge, dwarf-shrub, moss tundra.
  
  Mesic to subhygric, acidic, shallow to moderate snow. Stable slopes. Some areas on steeper slopes with solifluction are dominated by Bigelow sedge (Carex bigelowii) (no code).
  605.1 ha, 29.8% of map
2. 5. Nontussock sedge, dwarf-shrub, moss tundra.
  
  Mesic to subhygric, circumneutral, shallow to moderate snow. Solifluction areas and somewhat unstable slopes (42), mainly on Itkillik II glacial surfaces. Some south-facing slopes have scattered glaucous willow (Salix glauca) (33). Also includes some miscellaneous graminoid-dominated sites: deep-snow stream margins (65), landslides, some rocky drained lake basins (45, 75) and animal dens (104).
  306.8 ha, 15.1% of map
Wet Graminoid Tundra and Water
1. 6. Sedge-moss tundra (poor fens).
  
  Subhydric to hydric, acidic (pH < 4.5). Wet meadows, poor fens in colluvial basins - mainly on older (Itkillik I) glacial surfaces.
  7.8 ha, 0.4% of map
2. 7. Sedge-moss tundra (fens).
  
  Subhydric to hydric, minerotrophic (pH > 4.5). Water tracks, stream margins, fens, flarks on solifluction slopes - mainly on younger (Itkillik II) glacial surfaces.
  105.6 ha, 5.2% of map
3. 8. Water and herbaceous marsh.
  
  Lakes, ponds and streams; aquatic vegetation in some protected sites.
  196.5 ha, 9.7% of map
Prostrate-shrub tundra
1. 9. Prostrate dwarf-shrub, fruticose-lichen tundra.
  
  Xeric to xeromesic, acidic, shallow snow. Exposed sites on glacial till, outwash, ridge tops, exposed slopes, dry river terraces.
  232.2 ha, 11.5% of map
2. 10. Prostrate dwarf-shrub, sedge, forb, fruticose-lichen tundra (nonacidic).
  
  Xeromesic to mesic, nonacidic with shallow snow cover. Exposed sites on dry river terraces, recent alluvium (13); dry microsites in nonsorted-stripe complexes (16, 18). Dominated by Dryas integrifolia.
  159.5 ha, 7.9% of map
3. 11. Hemi-prostrate and prostrate dwarf-shrub, forb, moss, fruticose-lichen tundra.
  
  Includes all snowbed types.
  93.0 ha, 4.6% of map
4. 12. Hemi-prostrate dwarf-shrub, fruticose-lichen tundra.
  
  Subxeric to mesic, acidic, with shallow snow. Shallow depressions on dry glacial till or outwash.
  121.0 ha, 6.0% of map
Erect-shrub tundra
1. 13. Dwarf-shrub or low-shrub, sedge, moss tundra.
  
  Mesic to subhygric, moderate snow. Lower slopes and upland water-track margins (43, 52), often with solifluction (44). Or palsas and high-centered polygons (51).
  124.3 ha, 6.1% of map
2. 14. Low and tall shrublands.
  
  Low shrubs in upland water tracks (66, 67), streamsides (61, 62, 63) and south facing slopes (52, 34), mesic to subhydric, often with deep snow.
  23.2 ha, 1.1% of map


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