Fig. 1From: Analysis of nifH DNA and RNA reveals a disproportionate contribution to nitrogenase activities by rare plankton-associated diazotrophsAlpha-diversity of the total and active plankton-associated diazotrophs (PADs) communities. Shannon index (a), Simpson index (b), Pielou evenness (c) and Chao 1 index (d) of the total and active PADs community based on nifH-derived DNA and RNA libraries. The dots indicate the diversity index value of each sampleBack to article page