1. Collembola
Predatory
Mites
Shoots
Phytophagous
Nematodes
Mycophagous
Prostigmata
Roots
Nematophagous
Mites
Mycorrhizal
Fungi
Inorganic N
Cryptostimata
Predatory
Nematodes
Saprophytic
Fungi
Labile
Substrates
Mycophagous
Nematodes
Omnivorous
Nematodes
Resistant
Substrates
Flagellates
Bacteria
Amoebae
Bacteriophagous
Nematodes
Figure 1. Note to Reviewers - the N-flow rates and interaction strengths will be included in a later draft as indicated in text

2. Consumption Excretion of Assimilation Organic Material Excretion of
Efficiency
Excretion of
Organic Material
Assimilation
Production
Efficiency
Excretion of
Inorganic Material
Production
Figure 2

3. Ratio of Standardized Interaction Strengths
Trophic Position
Figure 3

4. Labile
Detritus
Bacteria
Fungi
Predators
Bacterial
Feeders
Fungal
Resistant
Widen C:N
Decrease NPP
Decrease N-Mineralization
Narrow C:N
Increase NPP
Increase N-Mineralization
“Fast Cycle”
“Slow Cycle”
Figure 4

5. 1-p
1-p
1-p p p p
 > o
Figure 5

6. A. B. A bo v eg r
oun d N , P B e l o w gr o
und Pl
ant H er
biv
ore P
red a
tor P
red a
tor s A bo v eg r
oun d N , P N , P II i l a Sy mb ot
ic M
utu
ism B e l o w gr o
und Ni
tro g en I Gr az er s M
icr
obe s N ut r i e nt E nr ic h m
ent M
icr
obe s C C I . II . C.
Figure 7