Native vs invasive

Here are photos of two different ecosystems on the same island in Hawaii. In the above photo, I cannot identify any species native to Hawaii. In the two photos below, there is surely a mix of native and non-native species, but native species appear to predominate. Maybe it would even be fair to say that endemic species predominate. It's not really fair to compare the two directly because of elevation and other differences, but just some Saturday shower thoughts as I dig through old photos.

It seems to me that highly invaded ecosystems tend to have lower species diversity and less complexity, but it's hard to say for sure. Womp, that just catapulted me into the black hole that is Google Scholar.