Marked changes in diversity and relative activity of picoeukaryotes with depth in the world ocean

摘要

Comparison of picoeukaryotic community structure derived from the rRNA ( , ) and rDNA ( , ) datasets based on a non-metric multidimensional scaling analysis (NMDS). Each sample is colored according to the depth layer ( , ) and has a different symbol shape according to the ocean where it comes from , ). Samples from  the photic and aphotic layers are shadowed (a, b). Samples from the Indian and the Pacific oceans in the photic and aphotic layers were grouped in separate polygons (c, d).