Most people recognize poison ivy as a low-growing plant, but the photo to your right depicts two examples of poison ivy in its vine growth form. The thinner poison ivy vine clings to the tree trunk by means of adhesive pads, while the thicker vine twines around the tree.
By climbing on other species, vine plants gain access to sunlight and avoid investments in trunks and branches. Can you think of any disadvantages to the vining "strategy"? In the battle between the vines and the trees, will there be an ultimate winner, or will all species continue to coexist?