Dunes

Dunes

Vegetative dune systems are very fragile habitats that grow as sand is captured and held in place by plants such as beachgrass and beach pea. Dunes are considered among the most susceptible natural structures to recreational use. Trampling by humans on foot, on horseback, and using motorized vehicles all contribute to damage of the vegetation, which, in turn, causes significant erosion of the dunes. Visitors who appreciate the delicate nature of the landscape and take care to minimize the impact of their visit show excellent environmental etiquette.

Champlain Beachgrass — Ammophila champlainensis

A rare plant species found only along Lake Champlain, the St. Lawrence River and Lake Ontario, this perennial beach grass is a type of marram grass, a dune stabilizer throughout the northern hemisphere. Beach grass can tolerate low-nutrient soil and an unreliable water supply. However, it is easily damaged by trampling.

Beach Pea — Lathyrus japonicus

Another perennial dune species with global distribution, the trailing beach pea has, throughout the summer, showy lavender flowers, which attract bees and butterflies. Seed pods contain small peas eaten by birds and rodents.