Fox grape (Vitis labrusca), a hardy vine that thrives in sandy soils, covers large portions of the entire island of Nantucket. Along some portions of the nature trail, it spreads as far as the eye can see. Fox grape gave Martha's Vineyard its name.

Fox grape can creep over everything in its path, and can engulf and even knock down shrubs such as bayberry (Morella pensylvanica) and red cedar (Juniperus virginiana).

Fox grape is one of three vine species that dominate the area. The trails are also lined with the dreaded poison ivy (Toxicodendron radicans) with its shiny three leaflets, and Virginia creeper (Parthenocissus quinquefolia) with its five leaflets arranged in a distinctive palm shape.

Vines climb in several different ways. Some twine around their supports, while other cling to them by means of tendrils, as illustrated by the Fox grape in the photo below:

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?