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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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Tampa Bay Sea Grass Beds Expand - Tampa Bay now supports 40,295 acres of sea grass beds, the largest amount of sea grass measured since the 1950s, a new study by scientists at the Southwest Florida Water Management District has found.


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