Which technique is effective for managing pest species populations biologically?

The technique of encouraging beneficial predators is an effective method for managing pest species populations biologically. This approach involves promoting the presence of natural enemies that can control pest populations without the need for chemical interventions. Beneficial predators, such as certain birds, insects, and mammals, can help maintain a balanced ecosystem by preying on or competing with the pests, thus reducing their numbers naturally. Utilizing this method supports ecological balance and sustainability while minimizing the potential negative impacts associated with the use of chemicals or drastic habitat alterations.

In contrast, using chemical pesticides can lead to resistance in pest populations, harm non-target species, and disrupt the ecosystem. Trapping and lethal control can temporarily reduce pest numbers but often do not provide a long-term solution and may not address the root causes of population surges. Habitat destruction, while it might seem like an immediate solution, typically results in more significant ecological damage and can negatively impact beneficial species, ultimately leading to more pest problems over time.