Fig. 1: Environmental conditions contribute to the variation in microbial communities in the surface ocean.
From: Global biogeography of microbes driving ocean ecological status under climate change
a Geographic distribution of samples in the Bio-GO-SHIP project. Each point indicates one sampling location to the nearest degree, with the point color indicating the metagenome sampling cruise. These cruises were performed at different times following different routes. b The structure, diversity, and functions of the microbial communities varied among the different samples. c Different microbial indices had different coefficients of variation. Specifically, Bacteroidetes had the highest coefficient of variation, while richness had the lowest coefficient of variation. The variation in genes related to photosystem I, photosystem II, the Calvin cycle, and sulfur oxidation was greater than that in genes related to other functions. The structure (d) and function (e) of microbial communities exhibited clear spatial and temporal variation (evaluated by adonis, two-sided, n = 890), which resulted from changes in environmental conditions. The results of adonis are directly shown as r2 and p value in the plots. Spatial variation was evaluated by grouping samples into different Longhurst Provinces. A detailed description of each Longhurst Province can be found in Supplementary Data 1. MLD mixed-layer depth, ATP adenosine triphosphate, Pta-Ack phosphate acetyltransferase-acetate kinase, 3HP/4HB 3-hydroxypropionate/4-hydroxybutyrate.
