Ecological Archives E096-169-A5

Max C. N. Castorani and Kevin A. Hovel. 2015. Invasive prey indirectly increase predation on their native competitors. Ecology 96:16211632. http://dx.doi.org/10.1890/14-1538.1

Appendix E. Parameter estimates from binomial logistic regression analysis testing the effects of Arcuatula density on the survival of native clams (Experiment 2).

Table E1. Parameter estimates from binomial logistic regression analysis testing the effects of Arcuatula density (in units of 1000 mussels/m²) on the survival of native clams (Experiment 2). P values < 0.05 are shown in bold.

Native clam species

Model parameter

Estimate

SE

χ²

df

P

Chione undatella

 

 

 

 

 

 

Intercept

2.300

0.554

17.21

1

< 0.0001

 

Arcuatula density

–0.493

0.228

4.66

1

0.0309

 

 

 

 

 

 

 

Laevicardium substriatum

 

 

 

 

 

 

Intercept

1.100

0.494

4.96

1

0.0260

 

Arcuatula density

–0.649

0.276

5.53

1

0.0186


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