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Lake Erie fish declines hooked to phosphorus?

Article Abstract:

The decline in fish population in Lake Erie is being linked to the decline in phosphorus levels in the lake. Improved sewage treatment has resulted to a sharp decline in phosphorus levels in the lake from 29,000 metric tons per in 1969 to 8-12,000 metric tons per year at present. Phosphorus is a limiting nutrient for algae, which are food for zooplankton. Fish normally feed on zooplankton.

Commercial Fishing, Fishing, Phosphorus & Compounds, Environmental aspects, Fishes, Phosphorus, Phosphorus (Chemical element), Lake Erie

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Drought and methylmercury loss

Article Abstract:

Acid rain and drought deplete dissolved organic carbon levels in lakes. Dissolved organic carbon absorbs UV light, protecting microscopic animals and plants at the bottom of the food chain. However, more UV penetration into lakes increases the break down of the toxin methylmercury.

Waste Management and Remediation Services, Water Pollution, Pollutants produced & recycled, Research, Pollution control industry, Pollution, Methylmercury, Methylmercury compounds

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U.S. report strengthens scientists' call for a critical load approach to controlling acid rain

Article Abstract:

A General Accounting Office report shows that the current standards on SO2 and NOx do not fully protect the most sensitive lakes of the United States, rekindling new debates from the scientific community on how deposition controls should be developed.

Government regulation, Industrial Gas Manufacturing, Industrial gases, Nitric Oxide, Sulfur Dioxide, Laws, regulations and rules, Chemical industry, Gases industry, Industrial gases industry, Sulfur industry, United States. Government Accountability Office

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