In most shallow systems,such as lake edges,nutrients are often in short supply,limiting the net primary productivity (NPP).

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Shallow systems, such as lake edges, are often rich in nutrients, which can lead to high NPP. This is because light can penetrate to the bottom and provide energy for photosynthesis, and the shallow water allows for easy access to nutrients. However, in some cases, excessive nutrient inputs (e.g. from agricultural runoff or sewage discharge) can lead to eutrophication, which can have negative impacts on NPP and overall ecosystem health.

In Most Shallow Systems,such as Lake Edges,nutrients Are Often in Short