Enhanced carbon pump inferred from relaxation of nutrient limitation in the glacial ocean : Abstract : Nature

Posted by Jim:

Enhanced carbon pump inferred from relaxation of nutrient limitation in the glacial ocean : Abstract : Nature.

Here’s another paper with a lot of stoichiometry in it and of high relevance for large-scale planetary issues we are investigating in our Astrobiology project.  At the very end the authors take the heretical step of wondering if the N:P ratio in the ocean might actually in some situations be higher than the canonical 16:1.   Start the clock on their oceanographic excommunication…

And it had a nice take-home line in the abstract:

“…using evidence from silicon and nitrogen isotope changes, we infer that, in contrast to the modern situation, the biological productivity in this region is not constrained by the availability of iron, silicon and nitrogen during the glacial period. We hypothesize that an invigorated biological carbon dioxide pump constrained perhaps only by phosphorus limitation was a more common occurrence in low-latitude areas of the glacial ocean.”

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s