Case plots underlying the linear regression analyses of community F
v/F
m(λex,λem) versus algal and cyanobacterial F
v/F
m(470,683) and F
v/F
m(590,683), respectively. a–c correspond to the key excitation–emission pairs highlighted with numerical markers in Fig. 6. a
F
v/F
m(470,683), sensitive to algal but not cyanobacterial F
v/F
m, b
F
v/F
m(590,683), with stronger correspondence to cyanobacterial compared to algal F
v/F
m and c
F
v/F
m(590,650), strongly related to cyanobacterial F
v/F
m(590,683) >0.4. Colours and symbols correspond to Fig. 7, drawn black lines mark unity. The discrete distribution of the subcommunity F
v/F
m values is caused by the limited number of cultures used to simulate community F
v/F
m matrices