Ohia trees are dying rapidly, Why?

[Hawnjigs]

When we moved into Nanawale around 18 years ago, dead ohias if any were not noticeable during our recreational walks. Now, there is a disturbing amount of recently dead and dying trees, just in the past few years. As others have noted, the older larger trees in the soil belts seem most affected, the more recent lava flow shallow soil areas are far less affected. Has anyone considered the effects of aluminum or other substance toxicity from geo-engineering fallout?

Aloha aina, aloha kai