Why is the runoff from fertilized agricultural fields, even if ...

[asan beg]

Why is the runoff from fertilized agricultural fields, even if free of pesticides, often harmful to the ecosystems of temperate lakes?
◦ Runoff water pools at the lake's bottom, where the fertilizer compounds react with materials in the sediment to form toxic substances.
◦ The runoff is acid, and acidification kills key lake organisms.
◦ Fertilizer compounds create large hydrothermal vent communities that kill lake organisms.
◦ The runoff causes heavy growth of algae, which eventually die and decompose, causing oxygen depletion.

[mjbamaung]

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[asan beg]

Thank you!

[mjbamaung]

Always glad to help...