What is meant by mechanical removal in aquatic pest control?

Mechanical removal in aquatic pest control refers to the physical process of removing unwanted vegetation from water bodies, such as lakes, ponds, or other aquatic environments. This method involves using tools or equipment to manually or mechanically extract invasive plants and algae, helping to manage excessive growth without the use of chemicals.

This approach is often valued for its directness and effectiveness, as it does not introduce additional substances into the water, which could pose risks to the ecosystem. Mechanical removal can also lead to immediate visible results, making it a desirable option for managing infestations of aquatic plants.

In contrast, utilizing natural predators involves relying on biological control agents, which is different from the hands-on technique of physical removal. Applying fertilizers is aimed at promoting plant growth rather than eliminating unwanted species and is counterproductive in the context of pest control. Lastly, using chemicals to kill pests entails applying pesticides or herbicides, which can have long-term environmental impacts and may not be as desirable as physical removal methods.