Table 2 Total biomass was a function of soil N, P, competition (inter- vs. intra-specific) and species.

From: Apparent plasticity in functional traits determining competitive ability and spatial distribution: a case from desert

 

df

F a

P

H. ammodendron

 N

5

71.51

<0.0001

 P

5

100.63

<0.0001

 Competition

1

1681.55

<0.0001

 N × P

23

58.71

<0.0001

 N × Competition

5

43.23

<0.0001

 P × Competition

5

102.95

<0.0001

 N × P × Competition

23

47.82

<0.0001

H. persicum

 N

5

85.07

<0.0001

 P

5

37.48

<0.0001

 Competition

1

1291.72

<0.0001

 N × P

23

198.34

<0.0001

 N × Competition

5

41.18

<0.0001

 P × Competition

5

83.43

<0.0001

 N × P × Competition

23

46.03

<0.0001

Monoculture pots

 N

5

194.18

<0.0001

 P

5

35.02

<0.0001

 Species

1

4949.76

<0.0001

 N × P

23

151.31

<0.0001

 N × Species

5

34.55

<0.0001

 P × Species

5

37.69

<0.0001

 N × P × Species

23

54.02

<0.0001

Mixture pots

 N

5

37.52

<0.0001

 P

5

164.61

<0.0001

 Species

1

5084.61

<0.0001

 N × P

23

49.78

<0.0001

 N × Species

5

41.89

<0.0001

 P × Species

5

69.90

<0.0001

 N × P × Species

23

43.86

<0.0001

  1. The effect of competition was tested per species, while the effect of species was tested separately for monocultures and mixtures.
  2. aF is from GLMs using Type III sums of squares.
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