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iron

This tag is associated with 5 posts

What your poop says about your diet: Iron in the ocean is controlled by zooplankton diet and poop

Have you ever had weird colored poop? Just like your poop can tell you what you’ve been eating lately, zooplankton poop can tell you what they’ve been feeding on. Iron in zooplankton poop is used as a nutrient by phytoplankton to boost their growth and absorb more carbon dioxide from the atmosphere. Therefore, understanding how […]

A 2.5 billion year old story about iron in the ocean, told by a rock

New light has been shed on the possibility of an alternative iron sink than previous thought prior to the oxygenation of the oceans 2.45 billion years ago. The findings could affect our interpretations of the early seawater chemistry, nutrient cycling, and trace metal distribution in the Precambrian. Anne M. HartwellHello, welcome to Oceanbites! My name […]

Take your iron! Seasonally melting snow as an iron supply to the Ross Sea, Antarctica

Observations show that the amount of primary productivity in the McMurdo Sound in the Ross Sea of Antarctica cannot be supported by the winter reserve of iron alone. This study suggests that atmospherically deposited iron accumulated on snow could be an additional nutrient supply to this region as it melts each year. This iron from […]

Could increasing CO2 be decreasing human nutrition?

The increase in global atmospheric CO2 concentrations may be causing major food crops, like wheat, to have lower amounts of the nutrients zinc and iron, causing a potential decrease in human health. Kari St.LaurentI received a Ph.D. in oceanography in 2014 from the Graduate School of Oceanography (URI) and am finishing up a post-doc at […]

Volcanic ash, fertilizer for the ocean?

Volcanic ash may be an important source of the valuable micronutrients iron and manganese to phytoplankton populations in areas with low chlorophyll, such as the Southern Ocean. Kari St.LaurentI received a Ph.D. in oceanography in 2014 from the Graduate School of Oceanography (URI) and am finishing up a post-doc at the University of Maryland Center […]

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