Road ecology blog: Pamela Denmon (USFWS) demonstrates where the plastic corrugated pipe should be located with short vegetation on both sides. The pipe is designed as a barrier to keep Northern diamondback terrapins (Malaclemys terrapin terrapin) off the highway, Fisherman Island National Wildlife Refuge, Virginia. Shrubs, trees, or tall grasses and herbs adjacent to the tube allow terrapins to climb the barrier. In addition, if the barrier is not snug to the ground, terrapins can crawl under the barrier and access the highway.

Pamela Denmon demonstrates where the plastic corrugated pipe shoPamela Denmon demonstrates where the plastic corrugated pipe should be located with short vegetation on both sides. The pipe is designed as a barrier to keep Northern diamondback terrapins (Malaclemys terrapin terrapin) off the highway, Fisherman Island National Wildlife Refuge, Virginia

Plastic corrugated pipe designed as a barrier to keep Northern dPlastic corrugated pipe (6 inches diameter) staked in ground with rebar, Fisherman Island National Wildlife Refuge, Virginia. The pipe is designed as a barrier to keep Northern diamondback terrapins (Malaclemys terrapin terrapin) turtles off the highway. Note that the corrugated pipe should NOT be adjacent to the shrubs. Tall vegetation can allow turtles to climb over the barrier. The vegetation should be short on both sides of the barrier. Plastic corrugated pipe designed as a barrier to keep Northern dPlastic corrugated pipe (6 inches diameter) staked in ground with rebar, Fisherman Island National Wildlife Refuge, Virginia. The pipe is designed as a barrier to keep Northern diamondback terrapins (Malaclemys terrapin terrapin) turtles off the highway. Note that the corrugated pipe should NOT be adjacent to the shrubs. Tall vegetation can allow turtles to climb over the barrier. The vegetation should be short on both sides of the barrier. Plastic corrugated pipe designed as a barrier to keep Northern dPlastic corrugated pipe (6 inches diameter) staked in ground with rebar, Fisherman Island National Wildlife Refuge, Virginia. The pipe is designed as a barrier to keep Northern diamondback terrapins (Malaclemys terrapin terrapin) turtles off the highway. Plastic corrugated pipe designed as a barrier to keep Northern dPlastic corrugated pipe designed as a barrier to keep Northern diamondback terrapins (Malaclemys terrapin terrapin) off the highway, Fisherman Island National Wildlife Refuge, Virginia. Note that the vegetation show be shorth on both sides of the barrier. Otherwise the turtles can climb over the pipe.

Click here for images of wildlife fencing.

Click here for images of multifunctional underpasses.

Click here for images of wildlife underpasses.

Like Marcel Huijser Photography on Facebook

All content © 2019 Marcel Huijser