Fisherman concerned about insufficient phosphate
Fisherman in the Bodensee (Lake Constance), on the German, Swiss and Austria border, have written to authorities to express concern about declining catches, resulting from reducing phosphorus concentrations in the inland sea. Fish catches are down by maybe five times. The low phosphate levels in the water are reducing fish growth rates, because primary production of algae and plants is cut. http://www.welt.de/108638912
 
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