Last November I mused whether the Sycamore trees would, over the years, take over the quarry in DePauw Nature Park. My recent visit made me skeptical.
There are still lots of little sproutlings, but what I thought looks like early fall coloring in the top picture and below,
turns out to be something else up close.
At least one half of the younger trees are affected by leaf loss and dead branches, and the brown color look rather unhealthy.
It might be that these trees are affected by Anthracnose, or that just the generally problematic ground cover of the quarry causes malnutrition, as Bryan from DePauw University suggested. We will have to wait.