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. 2012 Oct 10;7(10):e47130. doi: 10.1371/journal.pone.0047130

Table 1. Algal strains used in this experiment, along with their frequency in North American lakes.

Species name Taxonomic group Common form Frequency (%) Rank Freq. Rank Abundance
Anabaena spp. 1 Cyanobacteria Filaments 55.9 4 13
Navicula subminuscula 1 Bacillariophyta Individual cells 35.4 16 168
Nitzschia pusilla 2 Bacillariophyta Individual cells 31.1 22 116
Oscillatoria spp. 1 Cyanobacteria Filaments 33.7 19 24
Planothidium lanceolatum 2 Bacillariophyta Individual cells N/A
Scenedesmus quadricauda 3 Chlorophyta Colonies 52.9 5 51
Selenastrum minutum 3 Chlorophyta Individual cells 16.5 48 147
Spirogyra communis 3 Charophyta Filaments 0.34 183 184
Stigeoclonium tenue 3 Chlorophyta Individual cells 0.86 139 216
Tabularia fasciculata 2 Bacillariophyta Individual cells 5.46 83 145
1

Obtained from the Carolina Biological Supply Company (North Carolina, USA).

2

Isolated in the laboratory from local environmental samples.

3

Obtained from the University of Texas Culture Collection (UTEX; Texas, USA).

N/A: Genus not observed in the 2007 survey.

Frequency (%): percentage of lakes in which this genus was present, based on a 2007 survey completed by the U.S. EPA (n = 1154 lakes) [13].

Rank Freq: of the 262 total genera found, ranking based on how frequently the particular genus was observed.

Rank Abundance: ranking based on the average abundance of genera in all lakes where present.