Table 1 Results of linear models (LMs) relating the follow-up seedbank to the initial seedbank, the proportion of crop, the pesticide intensity and to the seed-eating carabid AD alone or in interaction with alternative prey biomass.

From: The resilience of weed seedbank regulation by carabid beetles, at continental scales, to alternative prey

Analyses

Session

AIC

R2

Explanatory variable

Est (std. error)

F

df

P-value

Effect of SE

1 (n = 57)

103.3

0.68

log(Initial seedbank)

0.72 (0.08)

70.95

1

 < 0.001***

log(SE)

0 (0.10)

0.00

1

0.999

PesticideIntensity

− 0.03 (0.05)

0.44

1

0.510

pCrop

0.53 (0.42)

1.58

1

0.214

2 (n = 57)

93.3

0.72

log(Initial seedbank)

0.76 (0.08)

97.06

1

 < 0.001***

log(SE)

− 0.26 (0.09)

7.82

1

0.007**

PesticideIntensity

− 0.06 (0.05)

1.69

1

0.200

pCrop

0.33 (0.40)

0.69

1

0.412

Effect of SE carabids × aphids

1 (n = 57)

98.8

0.72

log(SE):log(Aphid)

0.01 (0.08)

0.01

1

0.922

log(SE)

− 0.01 (0.49)

0.18

1

0.676

log(Aphid)

− 0.21 (0.46)

8.05

1

0.007**

log(Initial seedbank)

0.74 (0.08)

75.93

1

 < 0.001***

PesticideIntensity

− 0.08 (0.05)

2.01

1

0.162

pCrop

0.68 (0.41)

2.77

1

0.102

2 (n = 42)

73.4

0.75

log(SE):log(Aphid)

− 0.01 (0.18)

0.00

1

0.966

log(SE)

− 0.13 (1.07)

2.00

1

0.166

log(Aphid)

0.06 (0.96)

0.02

1

0.877

log(Initial seedbank)

0.73 (0.09)

66.65

1

 < 0.001***

PesticideIntensity

− 0.10 (0.06)

2.92

1

0.097

pCrop

− 0.23 (0.52)

0.20

1

0.660

Effect of SE carabids × collembola

1 (n = 57)

105.5

0.68

log(SE):log(Collembola + 0.5)

0.07 (0.05)

1.56

1

0.217

log(SE)

− 0.36 (0.31)

0.00

1

0.955

log(Collembola + 0.5)

− 0.44 (0.36)

0.01

1

0.917

log(Initial seedbank)

0.69 (0.09)

59.56

1

 < 0.001***

PesticideIntensity

− 0.03 (0.05)

0.29

1

0.595

pCrop

0.56 (0.48)

1.33

1

0.254

2 (n = 42)

67.3

0.79

log(SE):log(Collembola + 0.5)

− 0.01 (0.07)

0.02

1

0.891

log(SE)

− 0.10 (0.32)

1.41

1

0.242

log(Collembola + 0.5)

0.15 (0.40)

5.52

1

0.025*

log(Initial seedbank)

0.78 (0.08)

95.42

1

 < 0.001***

PesticideIntensity

− 0.16 (0.06)

8.03

1

0.008**

pCrop

0.07 (0.49)

0.02

1

0.882

Effect of SE carabids × arachnida

1 (n = 57)

103

0.69

log(SE):log(Arachnida)

− 0.21 (0.14)

2.48

1

0.122

log(SE)

0.60 (0.39)

0.00

1

0.999

log(Arachnida)

1.3 (0.78)

1.37

1

0.247

log(Initial seedbank)

0.68 (0.09)

61.53

1

 < 0.001***

PesticideIntensity

− 0.04 (0.06)

0.48

1

0.49

pCrop

0.48 (0.42)

1.30

1

0.26

2 (n = 42)

71.6

0.76

log(SE):log(Arachnida)

0.10 (0.12)

0.64

1

0.428

log(SE)

− 0.55 (0.50)

1.80

1

0.189

log(Arachnida)

− 0.40 (0.59)

0.91

1

0.347

log(Initial seedbank)

0.73 (0.08)

75.46

1

 < 0.001***

PesticideIntensity

− 0.12 (0.05)

4.60

1

0.039*

pCrop

0.02 (0.54)

0.00

1

0.978

Effect of SE carabids × total prey

1 (n = 57)

96.4

0.73

log(SE):log(Total animal)

0.18 0.13)

2.05

1

0.159

log(SE)

− 1.23 (0.87)

0.00

1

0.965

log(Total animal)

− 1.26 (0.75)

8.42

1

0.005**

log(Initial seedbank)

0.72 (0.8)

82.58

1

 < 0.001***

PesticideIntensity

− 0.08 (0.05)

2.35

1

0.132

pCrop

0.57 (0.39)

2.11

1

0.152

2 (n = 42)

70.4

0.77

log(SE):log(Total animal)

0.13 (0.25)

0.29

1

0.594

log(SE)

− 1.05 (1.61)

2.51

1

0.122

log(Total animal)

− 0.49 (1.34)

2.34

1

0.135

log(Initial seedbank)

0.69 (0.08)

67.17

1

 < 0.001***

PesticideIntensity

− 0.12 (0.06)

4.14

1

0.049*

pCrop

− 0.03 (0.50)

0.00

1

0.946

  1. Five different analysis were conducted to test the effect of seed-eating (SE) carabids alone on weed seedbank change and to assess the interaction effect of seed-eating (SE) carabids with alternative prey (Aphididae, Collembola, Arachnida and the total of alternative prey). We fitted models for sessions 1 and 2 separately. Results for the other carabid groups are presented in Supp. Mat. Table S10. For each model we report the corresponding session with the number of observation (n), the AIC, the R-squared (R2), and for each variable in the model we state the estimate with standard error (Est. (Std. Error)), the F-value (F), the degree of freedom (Df) and the P-value.
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