nitracline

nitro- +‎ -cline

nitracline (plural nitraclines)

1. A layer in a body of water in which the nitrate concentration changes rapidly with depth
   • 2015 July 11, “Nitrate and Nitrite Variability at the Seafloor of an Oxygen Minimum Zone Revealed by a Novel Microfluidic In-Situ Chemical Sensor”, in PLOS ONE‎, DOI:10.1371/journal.pone.0132785:

     All profiles showed that ΣNO x was depleted at the surface with a nitracline located at about 20–40 m depth, below which ΣNO x increased to about 30 μM. The location of the nitracline coincided with a NO 2 - concentration peak of 0.6 μM at 30 m, which was also the upper boundary of the O 2 minimum (29 μM after 60 m) extending down to 160 m.

• calretinin, encrinital, tricennial