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 shallow on the underlying lava.
Average annual precipitation ranges from 70 to 110 inches. Most of the precipitation falls from November through March, with March being the wettest month. Average annual temperature is about 72 to 73 degrees F. The climate can be generally classified as udic and tropical in nature.
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Monthly Precipitation (inches) and Temperature (0F)
There are no water features influencing this site.
Representative Soil Features
Soils are very shallow to shallow highly decomposed plant materials in `a`a or over pahoehoe. Landscape surfaces in this ecological site are young (generally 400 to 1,500 years old). The soils are well to 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 in soils but can be very slow in underlying pahoehoe. Runoff potential ranges is negligible. Moist colors range from very dark brown to black. Soil temperature regimes are isohyperthermic. Soil moisture regimes are udic (in most years, not dry for as long as 90 cumulative days).