A(k,t)	Original reported abundance of strategy k in state t
p(k,t)	Closed relative abundance of strategy k in state t
S	Chemical richness
H′	Shannon diversity
J	Pielou evenness
GBDI	General Biosynthetic Diversity Index
P(k,t)	Total abundance assigned to biosynthetic pathway k
α	GBDI abundance-sensitivity exponent
r(k,t)	Realized logarithmic change between consecutive states
$\overline{\mathrm{r}}$(t)	Abundance-weighted mean logarithmic change
g(k,t)	Realized relative chemical payoff
I(k,t)	Abundance-weighted payoff impact
GC-MS	Gas chromatography–mass spectrometry
GC-FID	Gas chromatography–flame ionization detection
LC-MS	Liquid chromatography–mass spectrometry
LC-MS/MS	Liquid chromatography–tandem mass spectrometry
RI	Retention index
SD	Standard deviation