Ecological Site Description Ecological Site Characteristics Site Identification



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FOTG Section II. Natural Resources Information F. Ecological Site Descriptions

F162XY500HI Ohia-Lama-Pandanus Coastal Forest




Ecological Site Description

Ecological Site Characteristics


Site Identification

Site Type: Forestland

Site ID: F162XY500HI

MLRA: 162

Colloquial Site Name: Ohia-Lama-Pandanus Coastal Forest

Official Site Name: Metrosideros polymorpha-Diospyros sandwicensis-Pandanus tectorius/Asplenium nidus

Physiographic Features

This ecological site occurs on lava flows on sloping mountainsides of shield volcanoes. Lava flows are `a`a (loose, cobbly) or pahoehoe (smooth, relatively unbroken). Volcanic ash flows range from very shallow to deep on the underlying lava.




Landform: (1) `a`a lava flow
Landform: (2) pahoehoe lava flow
Landform: (3) volcanic ash flow

Minimum

Maximum

Elevation (feet):

20

1200

Slope (percent):

3

25

Water Table Depth (inches):







Flooding:
Frequency:
Duration:







Ponding:
Depth (inches):
Frequency:
Duration:







Runoff Class:

slow

slow

Aspect: (1) E
Aspect: (2) NE








Climatic Features

Average annual precipitation ranges from 100 to 160 inches. Most of the precipitation falls from November through April, with December being the wettest month. Average annual temperature is about 66 to 72 degrees F. The climate can be generally classified as udic and tropical in nature.


Climate Chart




Minimum

Maximum

Frost Free Period (days):

365

365

Freeze Free Period (days):

365

365

Mean Annual Precipitation (inches):

100

160




Monthly Precipitation (inches) and Temperature (0F)

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Precip. Min.

1.00

1.00

0.30

2.00

2.00

2.00

5.00

4.00

3.00

3.00

3.00

2.00

Precip Max.

38.00

33.00

67.00

32.00

22.00

26.00

25.00

34.00

31.00

32.00

37.00

48.00

Temp. Min

61.00

60.00

61.00

62.00

63.00

65.00

65.00

66.00

66.00

65.00

64.00

62.00

Temp. Max

80.00

80.00

80.00

80.00

81.00

83.00

83.00

84.00

84.00

84.0

82.00

81.00

Climate Station: (1)
Climate Station: (2)

92.0 Keaau, 1901-1962 (precipitation)
92.0 Keaau, 1905-1966 (temperature)


Influencing Water Features

There are no water features influencing in this ecological site.



Representative Soil Features

Typical soils are highly decomposed plant materials in `a`a or on pahoehoe. Landscape surfaces in this ecological site are young (generally 400 to 1,500 years old). Soils are well to somewhat excessively drained. Available water capacity in most soils ranges from 1 to 4 inches. Available water capacity refers to the volume of water available to plants in the upper 40 inches of soil, including rocks, at field capacity. Permeability is rapid. Runoff potential is low to XXX. Moist colors range from black to dark brown. Soil reactions (pH in CaCl2) range from slightly acid to extremely acid in surface horizons and slightly acid to extremely in subsurface horizons. Soil temperature regimes are isohyperthermic. Soil moisture regime is udic (in most years, not dry for as long as 90 cumulative days).




Predominant Parent Materials:
Kind: highly decomposed plant materials or volcanic ash
Origin:      

Surface Texture: (1) 
Surface Texture: (2) 
Subsurface Texture Group: 

Surface Fragments <=3" (%Cover): 0-60
Surface Fragments >3" (%Cover): 0-50

Rock Fragments <=3" (%Volume): 0-65
Rock Fragments >3" (%Volume): 0-95

Drainage Class: well

Permeability Class: rapid




Minimum

Maximum

Depth (inches):

10

20

Electrical Conductivity (mmhos/cm):

0

2

Sodium Adsorption Ratio:

0

0

Calcium Carbonate Equivalent (percent):







Soil Reaction (1:1 Water):







Soil Reaction (.0-1M CaC12):







Available Water Capacity (inches):






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