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
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Volume | m = | 2,137
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Loop count | l = | 0
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Wedge count | s = | 83,185
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Claw count | z = | 1,414,104
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Cross count | x = | 21,386,699
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Triangle count | t = | 8,715
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Square count | q = | 335,189
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4-Tour count | T4 = | 3,018,464
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Maximum degree | dmax = | 110
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Maximum outdegree | d+max = | 63
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Maximum indegree | d−max = | 110
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Average degree | d = | 33.390 6
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Fill | p = | 0.131 459
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Size of LCC | N = | 128
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Size of LSCC | Ns = | 103
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Relative size of LSCC | Nrs = | 0.804 688
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Diameter | δ = | 3
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50-Percentile effective diameter | δ0.5 = | 1.307 91
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90-Percentile effective diameter | δ0.9 = | 1.877 53
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Median distance | δM = | 2
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Mean distance | δm = | 1.722 26
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Gini coefficient | G = | 0.253 663
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Balanced inequality ratio | P = | 0.413 430
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Outdegree balanced inequality ratio | P+ = | 0.337 857
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Indegree balanced inequality ratio | P− = | 0.342 068
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Relative edge distribution entropy | Her = | 0.977 136
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Power law exponent | γ = | 1.373 21
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Tail power law exponent | γt = | 5.021 00
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Tail power law exponent with p | γ3 = | 5.021 00
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p-value | p = | 0.961 000
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Outdegree tail power law exponent with p | γ3,o = | 5.931 00
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Outdegree p-value | po = | 0.437 000
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Indegree tail power law exponent with p | γ3,i = | 3.531 00
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Indegree p-value | pi = | 0.100 000
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Degree assortativity | ρ = | −0.104 372
|
Degree assortativity p-value | pρ = | 1.119 24 × 10−11
|
In/outdegree correlation | ρ± = | −0.386 098
|
Clustering coefficient | c = | 0.314 299
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Directed clustering coefficient | c± = | 0.339 695
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Spectral norm | α = | 435.201
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Operator 2-norm | ν = | 347.139
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Cyclic eigenvalue | π = | 65.098 2
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Algebraic connectivity | a = | 2.338 96 × 10−5
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Spectral separation | |λ1[A] / λ2[A]| = | 1.104 37
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Reciprocity | y = | 0.029 012 6
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Non-bipartivity | bA = | 0.490 948
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Normalized non-bipartivity | bN = | 0.445 053
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Algebraic non-bipartivity | χ = | 1.906 87
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Spectral bipartite frustration | bK = | 0.014 487 1
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Controllability | C = | 29
|
Relative controllability | Cr = | 0.226 562
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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 ]
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[2]
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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 00-0176, Chesapeake Biological
Laboratory, Univ. of Maryland, 2000.
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