Which of the following is NOT an advantage of biotechnical slope protection?

Biotechnical slope protection refers to methods that combine natural vegetation and engineering techniques to stabilize slopes and protect them from erosion. The key advantages of biotechnical slope protection include being environmentally compatible, providing wildlife habitat, and often being less expensive than purely structural methods, which aligns with many goals of sustainable land management.

The choice indicating that specialized installation skills are required is indeed not an advantage; instead, it highlights a potential challenge associated with implementing biotechnical methods. While employing biotechnical approaches can offer numerous benefits, the need for specialized knowledge to effectively install and maintain these systems can be seen as a drawback.

On the other hand, the other options clearly represent advantages: biotechnical methods are typically less expensive than traditional structural methods, they blend seamlessly into the environment and support local ecosystems by providing habitat for wildlife. Therefore, the correct answer identifies the misconception that specialized skills needed for installation enhance the method, when in fact, it represents a potential limitation.