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Acacia koa, commonly known as koa, [3] is a species of flowering tree in the family Fabaceae. It is endemic to the Hawaiian Islands , [ 2 ] where it is the second most common tree. [ 4 ] The highest populations are on Hawaiʻi , Maui and Oʻahu .
Koa trees occupy dry to mesic areas on the islands of Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, Maui, and Hawaiʻi in elevations of 80 to 8,000 feet with 0 to 100 inches of rain. They are a dominant forest species. Koa wilt has been found on the islands of Kauaʻi, Oʻahu, Maui, and Hawaiʻi. Most diseased trees are found at elevations below 3,000 ...
Acacia koaia is usually distinguished by growing as a short (rarely more than 5 m or 16 ft), broad, gnarled tree; having the seeds longitudinally arranged in the pod; shorter, straighter phyllodes; and much denser wood.
Situated on a plateau between 3,200 and 4,200 ft (980 and 1,280 m), much of Kōkeʻe is a montane (infrequent frost) mesic forest (50 to 100 in or 1,300 to 2,500 mm annual rainfall with moist soil conditions) dominated by koa and ʻōhiʻa lehua (Metrosideros polymorpha) trees. The park receives around 70 inches (1,800 mm) of rain per year ...
The Hawaiian Legacy Reforestation Initiative (HLRI) is a Hawaii-based 501(c)(3) nonprofit organization founded in 2014 that works to reforest endemic trees and restore native habitat for wildlife. [1] This includes koa, ‘ōhi‘a, māmane, naio, ko‘oko‘olau, kūkaenēnē and ‘iliahi trees. [2] [3]
This insect occurs on all the main islands of Hawaii. [4] [5] They are found on `a`ali`i (Dodonaea viscosa) bushes [6] and koa trees. [4] [6] A cluster of instars. Also found on Formosan Koa (Acacia confusa) which is native to Southeast Asia. It has been commonly used in Hawaii as an ornamental landscape tree that has been deemed invasive.
Pre-contact dryland forest ecosystems were reduced to less than five percent of their original range by clearing, grazing and invasive species in the late 1800s. The wood went to fuel the boilers at sugarcane mills and to make charcoal. By the early 1900s, the land was almost totally bereft of `ohi`a and koa trees.
Chiefly, it helped kālai waʻa (canoe-builders) to select the right koa tree to use for their waʻa . The ʻelepaio is a bold and curious little bird, and thus it was attracted to humans whom it found working in its habitat, and it quickly learned to exploit feeding opportunities created by human activity, altering its behavior accordingly [ 7 ...