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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.