Ecological Archives E091-040-A10

Steven E. McMurray, Timothy P. Henkel, and Joseph R. Pawlik. 2010. Demographics of increasing populations of the giant barrel sponge Xestospongia muta in the Florida Keys. Ecology 91:560–570.

Appendix J. Elasticity matrices of the Conch Reef summary matrices A(00-03) and A(03-06); and a figure depicting total elasticity for each size class.

TABLE J1. Elasticity matrices of the Conch Reef summary matrices A(00-03) and A(03-06). Large elasticities indicate transitions that have proportionately large effects on λ when perturbed. Elasticities greater than 0.01 are shown in bold. Elasticities for each column were summed to calculate total elasticity of each size class (Figure J1).

Conch Reef 2000–2003

 

Size class

Size class

Base

I

II

III

IV

V

Base

0.0128

0

0.0003

0.0003

0.0035

0

I

0.0006

0.0004

0

0

0

0

II

0.0009

0.0006

0.0047

0.0021

0

0

III

0.0010

0

0.0032

0.0175

0.0060

0

IV

0.0017

0

0

0.0079

0.1631

0.0380

V

0

0

0

0

0.0380

0.6975

Conch Reef 2003–2006

 

Size class

Size class

Base

I

II

III

IV

V

Base

0.1142

0

0.0013

0.0039

0.0081

0.0181

I

0.0136

0.0196

0.0015

0

0

0

II

0.0088

0.0151

0.0490

0.0057

0

0

III

0

0

0.0267

0.0596

0.0094

0

IV

0.0051

0

0

0.0265

0.0953

0.0153

V

0.0040

0

0

0

0.0294

0.4695

 

 
   FIG. J1. Total elasticity for each stage of Xestospongia muta over 2000–2003 and 2003–2006 for the Conch Reef summary matrices A(00-03) and A(03-06). Total elasticities were calculated as the sum of all elasticities for each stage from elasticity matrices (Table J1).

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