This tree is one of the reasons we are cutting the brush back. To get to the vines before they kill any more trees. We have a LOT of vine-strangled trees.
This vine has already made hundreds of berries. Berries have seeds in them. Birds find Poison Ivy berries quite delicious. Birds poop. When the bird poops, out comes the seed ready to grow in a new location. Die, vine, die!
I used a pruning tool to cut off a section of the vine about six inches long and then sprayed the bottom portion of the vine with Poison Ivy killer. I cut a bigg enough portion so that I can tell at a glance that the vine has been cut and can easily see if a smaller vine grows up bridging the gap. Be careful not to touch the vine, leaves, berries, or the cutting part of the tool. Poison Ivy sap will get on your skin and itch like crazy. The rash takes up to two weeks to appear.
The bark has already fallen off and the branches are scored by the scars left behind by Bark Beetles. Bark Beetles kill many trees, but the scars are works of art. Click on the picture to see it larger.