An international group of scientists is renewing calls for policymakers to reduce both nitrogen and phosphorus when attempting to alleviate eutrophication – or nutrient pollution problems – in fresh ...
... how simple the economics of nitrogen fixation fall out, once you consider the link between the nitrogen and phosphorus cycles in the tropics"
"Put together, these two factors give us a coherent ...
... ecology.
"This is because plant plankton or phytoplankton, like all plants, need nitrogen and phosphorus for growth," Elser says. "Inputs from pollution in the atmosphere appear to shift the ...
... low-nitrogen soils.
In tropical forests, it's the link between nitrogen and phosphorus that explains the abundance of nitrogen-fixing species.
"Many tropical forest soils are severely depleted in ...
... phosphorus ratio closer to what a crop needs than swine fed traditional corn diets. ... -ARS and the University of Nebraska – Lincoln compared nitrogen and phosphorus availability in field plots receiving ...
RESTON, Va., July 12 (UPI) -- U.S. researchers said heavy streamflows are sending record amounts of nitrogen and phosphorus into the Gulf of Mexico.
... over such a short time as dissolved oxygen."
Dead zones occur when excess nutrients, primarily nitrogen and phosphorus, enter coastal waters and help fertilize blooms of ...
... shown, however, that water at a depth of 300 to 700 meters has the proper ratio of nitrogen and phosphorus to trigger a two-stage phytoplankton bloom. The researchers believe that upwelling with water ...
... Clemson University published a study in the June 2008 issue of HortScience that investigated the nitrogen and phosphorus removal potential by a vegetated, laboratory-scale subsurface flow system. "In ...
... such as no-till farming to minimize erosion and planting cover crops to sequester carbon and reduce nitrogen and phosphorus run-off," he said. "But few farmers use all ...
... said. A 2007 CU-Boulder study led by Johnson showed high levels of nutrients like nitrogen and phosphorus used in farming and ranching activities fuel trematode infections in ...
Recent research conducted at Agriculture and Agri-Food Canada studied the impacts of tillage and nitrogen and phosphorus fertilization on carbon storage, revealing that the effect of no-till on carbon ...
... degradation in contaminated soil often involves the use of expensive fertilizers containing nitrogen and phosphorus, and again may come with an additional environmental price tag despite the bio ...
Protecting drinking water and preventing harmful coastal "dead zones," as well as eutrophication in many lakes, will require reducing both nitrogen and phosphorus pollution.
... always thought of dust deposition as good for phytoplankton, because it provides nutrients such as nitrogen, phosphorus, and iron. But we know air pollution has negative effects on the terrestrial ...
