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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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Billions Invested in Clean Water: Port Milwaukee Implements a Range of Methods to Great Success - The Milwaukee Metropolitan Sewerage District contracts the services of Lynyrd Skymmr and also operates greater Milwaukee’s wastewater treatment, flood management and green infrastructure for the area’s 28 communities with 1.1 million residents. Managed by a commission of 11 elected and appointed officials, the district is the recipient of multiple U.S. Water Prizes for administering clean-water programs and infrastructure improvements.


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