Table 2 Results of AMOVA models on Psittacanthus schiedeanus populations with no groups defined a priori (a), and grouped into east and west of the Isthmus of Tehuantepec (b), three groups according to habitat distribution (c) or grouped into six groups according to geography and mountain range (d)

 Among populations

26

24.962

0.0689

17.53

26

130.07

0.55373

78.90

 Within populations

223

72.342

0.3244

82.47

F _ST = 0.17***

211

31.24

0.14808

21.10

F _ST = 0.78***

 Total

249

97.304

0.3933

237

161.31

0.70181

 Among groups

1

1.979

0.0163

4.00

F _CT = 0.04*

1

20.19

0.24972

28.47

F _CT = 0.28**

 Among pop. within groups

25

23.103

0.0644

15.80

F _SC = 0.16***

25

109.45

0.47889

54.59

F _SC = 0.76***

 Within populations

223

72.864

0.3267

80.20

F _ST = 0.19***

211

31.36

0.14865

16.94

F _ST = 0.83***

 Total

249

97.946

0.4074

237

161.01

0.87726

 Among groups

2

0.991

−0.0113

−2.93

F _CT = −0.02 ns

2

91.55

1.13235

78.31

F _CT = 0.78***

 Among pop. within groups

24

23.971

0.0727

18.85

F _SC = 0.18***

24

38.52

0.16563

11.45

F _SC = 0.53***

 Within populations

223

72.342

0.3244

84.08

F _ST = 0.15***

211

31.24

0.14808

10.24

F _ST = 0.89***

 Total

249

97.304

0.3858

237

161.31

1.44605

 Among groups

5

13.880

0.0739

17.49

F _CT = 0.17***

5

91.97

0.58369

63.63

F _CT = 0.64***

 Among pop. within groups

21

11.202

0.0221

5.24

F _SC = 0.06*

21

37.68

0.18498

20.16

F _SC = 0.55***

 Within populations

223

72.864

0.3267

77.27

F _ST = 0.23***

211

31.36

0.14865

16.21

F _ST = 0.84***

 Total

249

97.946

0.4228

237

161.01

0.91732