Michigan Aquatic Pest Control Practice Exam

Biomanipulation is a management technique used in aquatic ecosystems to improve water quality and ecological balance by altering the food web dynamics. The primary goal of biomanipulation is to enhance water clarity, often targeted by modifying the populations of certain organisms within the aquatic environment.

This approach typically involves managing fish populations to control zooplankton and phytoplankton dynamics. For example, introducing or removing certain fish species can help in regulating the abundance of algae, allowing for a clearer water column. By influencing the food web, biomanipulation can lead to significant improvements in aquatic habitat and water quality.

While reducing nutrient levels may indirectly occur through these adjustments, the fundamental objective revolves around modifying interactions within the food web. Likewise, while enhancing growth is an important aspect of aquatic health, biomanipulation does not aim to promote all aquatic species uniformly. Moreover, while controlling invasive species is a critical aspect of ecosystem management, biomanipulation does not guarantee their complete elimination but rather focuses on balancing the ecosystem. Thus, improving water clarity through food web alterations captures the essence of biomanipulation effectively.