Table 1. A summary of the trend categories identified in this study and the patterns they display.

Pattern	No. of genes	Trend categories	No. of trend categories
Anerobic acetate contact	126	Q,R	2
Redox transition	697	AA,BB,CC,DD,EE,FF,GG,HH,NN	9
Aerobic	1844	II,JJ,KK,PP,QQ,RR,SS,TT,VV,WW,XX,YY,AAA,BBB,CCC,HHH,III,JJJ,KKK,LLL,MMM	21
High phosphorus	40	O,P	2
Low phosphorus	438	F,EEE,GGG,NNN,OOO,PPP,QQQ,RRR,SSS,TTT,UUU,VVV	12
Sum	3145	—	46