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Table 3 Test results describing the relationship between assemblage richness and both vector direction (circ. = circular) and vector length (lin. = linear) in a subset of loricariid genera for which sample sizes allowed statistical strength

From: Trophic diversity in the evolution and community assembly of loricariid catfishes

Genus

Test 1: individual vectors x site

Test 2: genus means x site

 

n

circ.R2

circ.P

lin.R2

lin.P

n

circ.R2

circ.P

lin.R2

lin.P

Ancistrus

44

0.02

0.533

0.05

0.138

9

0.07

0.648

0.05

0.547

Chaetostoma

44

0.27

0.000

0.11

0.032

6

0.52

0.174

0.27

0.287

Hyp. cochliodon grp

30

0.14

0.022

0.04

0.319

9

0.07

0.669

0.06

0.521

Hyp. plecostomus grp

97

0.00

0.671

0.01

0.430

14

0.01

0.872

0.06

0.412

Spatuloricaria

17

0.22

0.046

0.00

0.825

6

0.55

0.154

0.02

0.806

  1. Test 1 regressed individual vectors against assemblage richness (n = number of individuals). Test 2 regressed mean genus x site vectors against assemblage richness (n = number of assemblages). Bold face indicates significance at P < 0.1.