Figure 3

Growth rates in filtrates. Maximum instantaneous growth rates (r ± s.e.m.) of A) S. marcescens and B) N. capsulatum in filter-sterilized medium. The first species in the legend indicates the consumer species and the second the test species. Consumer species grew in the medium before filtering, and test species’ growth rate was measured in the filtered medium. X-axis is the resource consumption time before filtering, at t = 0 h is the growth rate in unconsumed medium.