Which of the following is an effect of habitat alteration on aquatic pest control?

Habitat alteration can significantly impact aquatic ecosystems, including the dynamics of pest control. When an environment is altered, it can create conditions that are less suitable for the survival and reproduction of aquatic pests. This could involve changes in water quality, temperature, or the availability of resources, all of which can disrupt the life cycles of pests and lead to a reduction in their populations. By making the habitat less conducive for pests, the altered environment can naturally help in controlling their spread and impact on native species.

In contrast, some other options suggest outcomes that are not aligned with the objective of habitat alteration for pest control. For instance, habitat alteration can sometimes lead to reduced competition among native species or even promote the spread of invasive species under certain circumstances, which could inadvertently worsen pest problems. However, creating an environment that hampers pest growth and proliferation is a direct effect of effective habitat alteration, making it a key strategy in the management of aquatic pests.