Fig. 1
From: Metagenomic and metatranscriptomic inventories of the lower Amazon River, May 2011
a Location of sampling sites in the Amazon River in May 2011. Sampling locations for previous metagenomic and metatranscriptomic datasets in the offshore plume of the Amazon (June, 2010) are also indicated. b Expression ratios (transcript to gene copy ratio) for the ten reference genomes recruiting the most reads from the metagenomes. Ratios are shown by station and size fraction (squares, particle-associated; circles, free-living)