Which method for maintaining ROWs involves animals, insects, or pathogens that compete with problematic species?

The method that involves using animals, insects, or pathogens to control or compete with problematic species is referred to as biological control. This approach utilizes natural predators or disease agents to manage pest populations, reducing the need for chemical herbicides or mechanical removal methods.

In the context of maintaining rights-of-way (ROWs), biological control can be effective for targeting invasive plant species that may outcompete native vegetation. By leveraging natural relationships within ecosystems, this method promotes sustainability, enhances biodiversity, and reduces environmental impacts.

Biological control is particularly valued for its long-term effectiveness, as it can lead to the establishment of a balanced ecosystem where pest populations are naturally regulated. This approach aligns with integrated pest management practices, advocating for an understanding of ecological dynamics and the importance of maintaining the health of the overall ecosystem.