The Adirondack Lakes Survey Corporation studied over 1400 lakes in the Adirondack region to understand how acidic deposition and natural acids affect lake pH levels. They also looked at how different lake and watershed features influence lakes' sensitivity to environmental changes. The researchers examined the relationship between lake chemistry, watershed characteristics, and fish communities to determine the current status and potential risks to the fish population from continued acidic deposition. They found that lake acidity plays a significant role in shaping fish communities and that reducing acidity levels could help the fish population recover.