Which factor is not an important advantage of aquatic organisms living near the surface of a lake or pond?

One factor that is not an important advantage for aquatic organisms living near the surface of a lake or pond is the availability of nutrients. While surface waters may have access to sunlight for photosynthesis, deeper layers often contain a higher concentration of nutrients due to sedimentation and decomposition. Therefore, organisms relying solely on surface habitats may face limitations in nutrient availability compared to those living in deeper waters.