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Acid Rain Threatens Crayfish
Canadian scientists have released a new study on what they call "aquatic osteoporosis" and its drastic effect on declining crayfish populations and aquatic life in the lakes in and around Algonquin Provincial Park.

The researchers found that depleted calcium levels have now driven some crayfish populations to near extinction.

The pH levels are changing in many lakes but the calcium reserves are no longer present in the soil to replenish the lake. Crayfish have a particularly high calcium requirement because of their hard exoskeleton and their extinction could cause a ripple effect with severe consequences on other aquatic species.


 
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Zequanox Offers Muscle Against Mussels in Minnesota lakes - Zequanox is a new bacterial control agent capable of killing zebra mussels. After two decades of research evaluating its effectiveness and safety, trials have indicated that the bacterium is killing zebra mussels.


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