Ecological Archives A022-013-A2

Jillian S. Cohen, John C. Maerz, and Bernd Blossey. 2012. Traits, not origin, explain impacts of plants on larval amphibians. Ecological Applications 22:218–228.

Appendix B (TABLE B1). A table showing results of “drop one” analyses for components of all models within 2 AIC of top models.

  ΔAIC
Aquatic variables Plant litter variables
Response variable
(model number)
Site Hydro
(days)
Phenol
(mg/l)
June temp
(°C)
June DO
(%)
July temp
(°C)
July DO
(%)
Chl-α
(µg/L)
Origin C:N N:P C:P Leaf Phenol
(mg/g)
Lignin
(%)
Litter
(g)
Probability that AA
metamorphosed (1)
    4.17     5.92 -0.92     5.61 4.75 7.99 4.69   2.58
Probability that AA
metamorphosed (2)
  -0.70 3.41     6.04 -0.47     6.67 5.09 8.76 3.59   1.59
Probability that LS
metamorphosed (1)
  16.17 1.14     1.03       1.11     -0.11 1.32  
Probability that LS
metamorphosed (2)
  16.00 2.06     2.41 -0.23     2.63     0.25 1.84  
Probability that LP
metamorphosed (1)
  34.17 13.17   -0.23   15.76     4.13 0.61 5.10     9.76
Probability that LP
metamorphosed (2)
  34.50 10.65   -0.47   16.24     4.61 0.56 5.11   -1.51 9.19
% of AA that
metamorphosed (1)
3.31   3.46 2.76   4.22 2.22 14.44 0.51 1.69 7.75   1.15   -0.93
% of LS that
metamorphosed (1)
  -0.59   2.22   0.99   5.15   -0.10          
LS% of LS that
metamorphosed (2)
  0.26   3.23 -0.04 2.71   5.08   0.01          
% of LS that
metamorphosed (3)
  0.33   3.51 0.70 3.89   6.32   1.70     -0.31    
% of LP that
metamorphosed (1)
5.93 5.03     1.42     -0.77 2.22   9.47     8.68  
Days to AA
metamorphosis (1)
9.13 -1.07 9.18 3.19 1.48           4.11   0.30 1.80  
Days to AA
metamorphosis (2)
10.82 0.40 9.71 3.20 2.78       -0.28   5.83 0.26   3.47  
Days to LS
metamorphosis (1)
9.59 7.40   2.09 6.48   4.64 3.08 -1.01            
Days to LP
metamorphosis (1)
20.71 16.29 1.89 11.05           -1.02         13.86
Days to LP
metamorphosis (2)
22.36 17.90 2.02 9.59           -0.08   0.84     15.69
Biomass (1)   37.66 1.33 1.39     9.82     2.33 4.46 2.39 -0.28    

Notes: ΔAIC refer to difference in AIC value between the top model and the top model less the focal variable.  Larger ΔAIC indicates greater relative importance of variable in top model.  Variable abbreviations include Hydro = hydroperiod, June temp. = mean June water temperature, July temp. = mean July water temperature, July DO = mean July dissolved oxygen, Phenol = soluble phenolic concentrations, and Litter = mean litter biomass.  AA = Anaxyrus americanus, LS = Lithobates sylvaticus, LP = Lithobates palustris.


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