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. 2012 Sep 19;7(9):e45814. doi: 10.1371/journal.pone.0045814

Figure 1. Catchment urbanization measures and in-stream ecological indicators for four contrasting streams in eastern Melbourne.

Figure 1

(A) Total and (B) connected imperviousness (estimated for 2004). Median 2001–2002 (C) dissolved organic carbon, (D) electrical conductivity, (E) filterable reactive phosphorus. (F) Mean 2001–2002 median benthic chlorophyll a, as an estimate of algal biomass. (G) Indice biologique diatomée (IBD) [53]. (H) SIGNAL score [54] for stream-edge samples. IBD and SIGNAL are indices based on diatom species and macroinvertebrate families, respectively, weighting each taxon by their sensitivity to pollution. Adapted from Walsh et al. [18], with minor revision to Little Stringybark Creek values from 2004 aerial photos and ground-truthing). Sass.  =  Sassafras Creek, L. Str.  =  Little Stringybark Creek.