Fig 1. Relationship between total prokaryote abundance and (a) AAP bacterial abundance and (b) cell size.

(c) Contribution of AAP bacteria to total abundance (%AAP) versus their contribution to total bacterial biovolume (%BV). The line in (a) and (b) is the least-square regression, and details of the regression models are given in Table 1. The line in (c) is the 1:1 line. Data have been log-transformed, and the plots comprise all data collected between July 2007 and October 2008.