Which of the following is a method used to control invasive plant species in wetlands?

Mechanical removal and herbicide application are effective and commonly used methods to control invasive plant species in wetlands. Invasives can outcompete native plants for resources, disrupting the ecosystem, so it's crucial to manage their spread. Mechanical removal typically involves physically uprooting or cutting the invasive plants, while herbicide application uses chemicals to kill or inhibit their growth.

This dual approach allows for immediate reduction of invasive populations and can be particularly effective in areas where rapid control is necessary to protect native habitats.

The other methods, while valuable in their own right, do not directly address the immediate issue of invasive species management. Promoting growth of native species can support ecosystem recovery but is generally more of a long-term strategy than a direct control method. Increased awareness campaigns are beneficial for education and community involvement, but they do not physically remove or manage the invasive species. Planting cover crops can aid in preventing erosion and improve soil health, but it doesn't specifically target invasive species in wetland environments.