Florida ecosystem dry
This network contains the carbon exchanges in the cypress wetlands of South
Florida during the dry 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 =  2,137

Loop count  l =  0

Wedge count  s =  83,185

Claw count  z =  1,414,104

Cross count  x =  21,386,699

Triangle count  t =  8,715

Square count  q =  335,189

4Tour count  T_{4} =  3,018,464

Maximum degree  d_{max} =  110

Maximum outdegree  d^{+}_{max} =  63

Maximum indegree  d^{−}_{max} =  110

Average degree  d =  33.390 6

Fill  p =  0.131 459

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} =  1.307 91

90Percentile effective diameter  δ_{0.9} =  1.877 53

Median distance  δ_{M} =  2

Mean distance  δ_{m} =  1.722 26

Gini coefficient  G =  0.253 663

Relative edge distribution entropy  H_{er} =  0.977 136

Power law exponent  γ =  1.373 21

Tail power law exponent  γ_{t} =  5.021 00

Tail power law exponent with p  γ_{3} =  5.021 00

pvalue  p =  0.951 000

Outdegree tail power law exponent with p  γ_{3,o} =  5.931 00

Outdegree pvalue  p_{o} =  0.450 000

Indegree tail power law exponent with p  γ_{3,i} =  3.531 00

Indegree pvalue  p_{i} =  0.100 000

Degree assortativity  ρ =  −0.104 372

Degree assortativity pvalue  p_{ρ} =  1.119 24 × 10^{−11}

In/outdegree correlation  ρ^{±} =  −0.386 098

Clustering coefficient  c =  0.314 299

Directed clustering coefficient  c^{±} =  0.339 695

Spectral norm  α =  435.201

Operator 2norm  ν =  347.139

Cyclic eigenvalue  π =  65.098 2

Algebraic connectivity  a =  2.338 96 × 10^{−5}

Spectral separation  λ_{1}[A] / λ_{2}[A] =  1.104 37

Reciprocity  y =  0.029 012 6

Nonbipartivity  b_{A} =  0.490 948

Normalized nonbipartivity  b_{N} =  0.445 053

Algebraic nonbipartivity  χ =  1.906 87

Spectral bipartite frustration  b_{K} =  0.014 487 1

Controllability  C =  29

Relative controllability  C_{r} =  0.226 562

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.
