|
Loon nests are placed
along the shoreline on islands or small hummocks
of vegetation in the water. If the water level drops, the adults may
abandon a nest, because it may become too high above the water for them to
reach. On the other hand, if the water level rises, the nest may become
flooded, resulting in chilling of the eggs and failure to survive to
hatching.
 Water
level fluctuation also causes
stirring of the sediments at the bottom
of a water body.
This results in increased levels of
methylmercury, and, thus, higher levels of
methylmercury in the animals living on that water body.
|
