Ben, are you asking if logs can be used as water harvesting berms? That's how I use them. Even though I have a lot of rocks, there are some places where it's easier to use logs or piles of brush, so I do. Eventually they will rot away, but before then they will have helped stabilize slopes so plants can grow.
Do you want ants? Because that's how you get ants. And a tiny ads:
WORK/TRADE OPPORTUNITY IN THE BEAUTIFUL SANTA CRUZ MOUNTAINS OF CALIFORNIA