Necessary to Remove Fallen Tree From Lake

Question: Why is it necessary to remove a fallen tree from a pond or lake?

Answer: The initial reaction to a tree being left in the pond is going to be the chemical reaction. So that tree has stored phosphorus and nitrogen inside its trunk. As that tree starts to decay, not only does that decay consume oxygen, but then it’s releasing the phosphorus and nitrogen. That nutrient loading that’s artificial and not normal to a pond then creates harmful algal blooms, and those algal blooms can be problematic both aesthetically and for health reasons.