SOC	Sediment organic carbon
MML	Microbial metabolic limitation
EEA	Extracellular enzymatic activity
VPA	Variance partitioning analysis
PLS-PM	Partial least squares path modeling
DCA	Detrended correspondence analysis
MRM	Multiple regression on dissimilarity matrix
ANOVA	Analysis of variance
TN	Total nitrogen
TP	Total phosphorus
MAT	Mean annual temperature
MAP	Mean annual precipitation
ASV	amplicon sequence variant
DIP	Dissolved inorganic phosphorus
DIN	Dissolved inorganic nitrogen
DOC	Dissolved organic carbon
Chl-a	Chlorophyll-a
OLS	Ordinary Least Square
BG	β-1,4-Glucosidase
CBH	Cellobiohydrolase
NAG	β-1,4-N-acetylglucosaminidase
LAP	Leucine aminopeptidase
AP	Alkaline phosphatase
AMC	7-amino-4-methyl coumarin
MUB	4-methylumbelliferone