Florida ecosystem wet
This network contains the carbon exchanges in the cypress wetlands of South
Florida during the wet season. Nodes represent taxa and an an edge denotes that
a taxon uses another taxon as food with a given trophic factor (feeding level).
Metadata
Statistics
Size  n =  128

Volume  m =  2,106

Loop count  l =  0

Wedge count  s =  81,147

Claw count  z =  1,380,155

Cross count  x =  20,997,705

Triangle count  t =  8,437

Square count  q =  318,981

4Tour count  T_{4} =  2,880,586

Maximum degree  d_{max} =  110

Maximum outdegree  d^{+}_{max} =  62

Maximum indegree  d^{−}_{max} =  110

Average degree  d =  32.906 2

Fill  p =  0.129 552

Size of LCC  N =  128

Size of LSCC  N_{s} =  103

Relative size of LSCC  N^{r}_{s} =  0.804 688

Diameter  δ =  3

50Percentile effective diameter  δ_{0.5} =  1.311 61

90Percentile effective diameter  δ_{0.9} =  1.877 97

Median distance  δ_{M} =  2

Mean distance  δ_{m} =  1.725 93

Gini coefficient  G =  0.255 832

Relative edge distribution entropy  H_{er} =  0.976 754

Power law exponent  γ =  1.375 34

Tail power law exponent  γ_{t} =  4.871 00

Degree assortativity  ρ =  −0.111 663

Degree assortativity pvalue  p_{ρ} =  5.441 65 × 10^{−13}

In/outdegree correlation  ρ^{±} =  −0.388 873

Clustering coefficient  c =  0.311 915

Directed clustering coefficient  c^{±} =  0.336 953

Spectral norm  α =  593.416

Operator 2norm  ν =  407.812

Cyclic eigenvalue  π =  164.603

Algebraic connectivity  a =  3.042 23 × 10^{−5}

Spectral separation  λ_{1}[A] / λ_{2}[A] =  1.204 30

Reciprocity  y =  0.029 439 7

Nonbipartivity  b_{A} =  0.494 702

Normalized nonbipartivity  b_{N} =  0.446 582

Algebraic nonbipartivity  χ =  1.907 39

Spectral bipartite frustration  b_{K} =  0.014 707 6

Controllability  C =  30

Relative controllability  C_{r} =  0.234 375

Plots
Matrix decompositions plots
Downloads
References
[1]

Jérôme Kunegis.
KONECT – The Koblenz Network Collection.
In Proc. Int. Conf. on World Wide Web Companion, pages
1343–1350, 2013.
[ http ]

[2]

Robert E. Ulanowicz, Johanna J. Heymans, and Michael S. Egnotovich.
Network analysis of trophic dynamics in South Florida ecosystems,
FY 99: The graminoid ecosystem.
Ann. Report to the United States Geological Service Biol.
Resources Division Ref. No.[UMCES] CBL 000176, Chesapeake Biological
Laboratory, Univ. of Maryland, 2000.
