Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Top left, dinoflagellates. Top right, diatoms. Bottom left, coccolithophores. Bottom right, “Unidentified nanoflagellates (3–20 μm)”. The three sampling depths (3 m, 20% light level and SCM) are indicated by different colours. The corresponding regression lines (dashed) and equations are indicated.
