2014 Shelfwide cruising update 2

This morning we’re transiting from the E to the F line. As of now we’ve found stratification and bottom water hypoxia (dissolved oxygen < 2 mg/L) at almost all stations from A, B, and C 6 shoreward, and D' and D 3, E 2A shoreward. Which is many more stations than at this point on the cruise last year. It's not hard to see why. Surface water has been filled with phytoplankton blooms (I've taken to calling it shelfwide Gatorade, because of the green color) and some of my GoPro recordings of our CTD casts (I'll post video when I get back to shore) show marine snow raining down. This is yummy yummy candy for aerobic heterotrophs that will respire the carbon, and in doing so, draw down the dissolved oxygen (DO) in the water. This process will have been going for some time to reduce bottom water DO to hypoxic levels. I'll keep you posted!





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 )

Google photo

You are commenting using your Google 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 )

Connecting to %s