Ice and iron
Nature Geoscience
2013년3월11일

The Greenland ice sheet could serve as a significant source of the micronutrient iron to the North Atlantic Ocean, reports a study published online in Nature Geoscience this week. The magnitude of this source is likely to increase as the melting of the ice sheet escalates in a warming world.
Maya Bhatia and colleagues measured the concentration of iron in meltwater draining the western margin of the Greenland ice sheet. They report significant quantities of biologically available iron in the meltwaters. Scaling up their findings to the entire Greenland ice sheet, they suggest that it could deliver as much iron to the North Atlantic as atmospheric dust, previously thought to be the main source of iron to the region.
In an accompanying News and Views article, Rob Raiswell says they “show that meltwaters of the Greenland ice sheet pick up significant quantities of bioavailable iron beneath the ice en route to the ocean.”
doi: 10.1038/ngeo1746
리서치 하이라이트
-
3월4일
Environment: Reservoirs account for more than half of water storage variabilityNature
-
3월2일
Evolution: Neanderthals may have heard just like usNature Ecology & Evolution
-
3월2일
Geoscience: Earth’s atmosphere may return to low-levels of oxygen in one billion yearsNature Geoscience
-
2월26일
Environment: Shifting from small to medium plastic bottles could reduce PET wasteScientific Reports
-
2월24일
Environment: European forests more vulnerable to multiple threats as climate warmsNature Communications
-
2월11일
Environment: Global CFC-11 emissions in declineNature