Yeah, we have the same systems in place here in subtropical Aus; same species, same degraded and cleared ecosystems. Even looks slightly similar.

When I think Hawaii I imagine tropical ecosystems but I understand some islands are naturally drier. What was there prior to the degradation is of interest and as I work in regeneration/reclamation, of interest again as to how these systems can be recreated.

That’s a good one. Hints at written/verbal records.

Thank you very much for that.

Lahaina used to have significant wetlands and lowland flats.

People just describe almost the entirety of Lahaina town as this forested area filled with breadfruit.

Lahaina, the former capital of the Hawaiian Kingdom, was once a thriving, ecologically diverse landscape full of fish ponds and diverse crops that included sweet potatoes, kalo (taro), and ‘ulu (breadfruit). But colonization, and the extractive agricultural systems that came with it, had a devastating impact on reshaping the landscape ecologically, culturally, and economically—not only depleting soils of fertility but making much of the island more fire-prone.

In some of the old Hawaiian language newspapers, Lahaina used to have significant wetlands and lowland flats. They would say, “Lahaina sits in the house of the Ulu trees,” or the ancient breadfruit grove Mala Ulu o Lele.

People just describe almost the entirety of Lahaina town as this forested area filled with breadfruit. And as the plantations came in, they were cutting down a lot of these trees. It got to the point where they passed a law that made it illegal to cut down an ulu tree. And so plantation owners started to pile their bagasse, their spent sugarcane pressings, around the base of the tree and burn it.

Those trees probably had a very significant effect in terms of the region’s moisture. Deep-rooted trees are able to tap into the water table. If you look at the rainfall, Lahaina was always way too dry to grow breadfruit. But the fact that you had this huge breadfruit growth and all these wetlands essentially speaks to the fact that the trees were tapping into this subterranean water table, lifting moisture up to the surface, redepositing some of that moisture through leaf litter, allowing for additional rain capture, for reduced evaporation, increased carbon in the soil, and holding additional moisture.

You basically just had an entirely different ecology of that region for two reasons: the undisturbed flow of the river, which allowed the recharge of the subterranean water sources; and these extensive treed landscapes in that area.

I’ve tried searching and I suppose the fact that it’s recent news pushes all the sources to the new.

In Australia, we can apply a “pre-clearing” layer to most of our mapping that let’s you know what the ecosystem was there before it was cleared. Does the US have something like that? I’m not sure where to get started.

Where I am, the same invasive grass species exist and things look similar. Be interesting to know if it was tropical forest prior.