What physical impact can a large congregation of cormorants have on a roost site like a few trees or a stretch of shoreline?

Answer

Acidic guano deposits can kill vegetation and strip foliage

The accumulation of acidic guano from large roosting groups can lead to the death of vegetation and the stripping of foliage, potentially impacting the site's viability.

What physical impact can a large congregation of cormorants have on a roost site like a few trees or a stretch of shoreline?
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