What aquatic species has been effectively used for controlling submerged plants in Florida?

Manatees have been effectively used for controlling submerged aquatic plants in Florida primarily due to their feeding habits. These large herbivorous mammals consume a significant amount of aquatic vegetation, including seagrasses and other submerged plants, thereby helping to maintain the balance of plant communities in freshwater and coastal ecosystems.

By grazing on these plants, manatees can prevent certain species from dominating, which can contribute to biodiversity and the overall health of aquatic habitats. Their natural foraging behavior plays an important role in controlling the growth of submerged plants, making them a valuable part of integrated aquatic weed management.

In contrast, while sea turtles, ducks, and crayfish interact with aquatic vegetation, their specific roles in controlling submerged plant growth are less effective compared to manatees. Sea turtles have more diverse diets and may not target the same plants, while ducks typically feed on the surface and may not reach the submerged plants effectively. Crayfish can contribute to controlling some aquatic plants, but their impact is generally limited compared to the significant grazing effect of manatees on larger aquatic plant populations.