Fig 1.
Collection locations of pelagic Sargassum used in AR assays.
Solid black line represents the 250-meter isobath [26].
Table 1.
Sargassum collection dates, locations, mean mass-specific rates of nitrogen fixation, and number of replicate assays (n).
Fig 2.
Range (colored bars) and mean (open circles) nitrogen fixation rates by cruise date (A) and standard error range among replicates by category (B). Bar color in panel A indicates whether a cruise date’s range of rates falls entirely below, crosses, or entirely above the overall mean rate (dashed line). Panel B illustrates the range of standard error among replicates from a single cruise date according to these same mean rate categories.
Table 2.
Rates of nitrogen fixation by epiphytic diazotrophs on pelagic Sargassum in reverse chronological order.
Rates are highest reported values (unless otherwise noted) under any condition.
Table 3.
Rates of nitrogen fixation by epiphytic diazotrophs in the phyllosphere of coastal macrophytes.
Rates are highest reported values (unless otherwise noted) under any condition from subtropical to tropical and north to south. Present study is included at the top for reference.