Acid Rain

This is typical a typical symptom of acid poisoning. The acid had entered the gills of the fish and poisoned them so that they were unable to extract salt from the water to maintain their bodies sodium levels.

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A D V E R T I S E M E N T

Many scientist said that this acid poising was due to the fact that it was just after the winter and that all the snow and ice was running down into the streams and lakes. They believed that the snow had been exposed to many natural phenomena that gave the snow it's high acid content.

Other scientists were not sure that this theory was correct because at the time that the snow was added to the lakes and streams the Ph levels would change from around 5.2 to 4.6. They believed that such a high jump could not be attributed to natural causes. They believed that it was due to air pollution. They were right. Since the beginning of the Industrial revolution in England pollution had been affecting all the trees,soil and rivers in Europe and North America.

However until recently the loses of fish was contained to the southern parts of Europe. Because of the constant onslaught of acid rain lakes and rivers began to lose their ability to counter act their affects. Much of the alkaline elements; such as calcium and limestone; in the soil had been washed away. It is these lakes that we must be worried about for they will soon become extinct.

A fact that may please fishermen is that in lakes/rivers they tend to catch older and larger fish. This may please them in the short run however they will soon have to change lakes for the fish supply will die quickly in these lakes. The problem is that acid causes difficulties the fish's reproductive system.

Often fish born in acid lakes do not survive for they are born with birth defects such as twisted and deformed spinal columns. This is a sign that they are unable to extract enough calcium from the water to fully develop their bone. These young soon die. With no competition the older,stronger can grow easily. However there food is contaminated as well by the acid in the water. Soon they have not enough food for themselves and turn to cannibalism. With only an older population left there is no one left to regenerate themselves. Soon the lake dies.