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Table 4 Summary of two-way ANOVA with fixed factors (year and site) for the analysis of copepod density and biomass considering each copepod size fraction and their sum

From: Interannual fluctuations in copepod abundance and contribution of small forms in the Drake Passage during austral summer

 

All

>300 μm fraction

<300 μm fraction

df

F-ratio

P

df

F-ratio

P

df

F-ratio

P

Factor—DENSITY DATA

 Site (SA, A)

1.46

39.86

<0.001

1.46

17.15

<0.001

1.46

25.86

<0.001

 Year (2000, 2001 & 2003)

2.46

8.72

<0.001

2.46

1.57

0.217

2.46

7.52

0.001

 Site × Year

2.46

1.56

0.22

2.46

1.51

0.230

2.46

0.86

0.429

Factor—BIOMASS DATA

 Site (SA, A)

1.46

110.01

<0.001

1.46

99.07

<0.001

1.46

64.32

<0.001

 Year (2000, 2001 & 2003)

2.46

12.50

<0.001

2.46

5.80

0.005

2.46

11.44

<0.001

 Site × Year

2.46

0.30

0.741

2.46

7.12

0.002

2.46

1.62

0.207

  1. SA samples from Subantarctic waters (N: 20), A samples from Antarctic waters (N: 32), df degrees of freedom, significant P values are indicated in bold
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Helgoland Marine Research

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