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Aluminum Sulfate Traps Phosphorus in Sediment
Cranberries often fade from memory in the aftermath of Thanksgiving feasts. Scientists with the U.S. Department of Agriculture and the University of Massachusetts Cranberry Station, however, focus on the scarlet berries year-round: In particular, these researchers want to prevent phosphorus applied to cranberry bogs as fertilizer from draining into nearby waterways.

As part of their effort to help farmers meet regulatory requirements, the researchers at USDA and U Mass are reporting that aluminum sulfate treatment can trap phosphorus in the sediment of irrigation ponds and cranberry bogs, preventing it from draining away.


 
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Microbes Aid in Establishment of Invasive Species - Researchers are also testing the effects different sediments have on the growth of algae and have found that sediments associated with seagrass reduce algal growth. The results show that dense beds of seagrass are resistant to colonization of algae, but when seagrass beds decline due to other pressures the balance of microbes in the sediment changes, giving the algae a change to invade new areas.


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