Gómez-Rodríguez et al. Dispersal and ecological traits explain differences in beta
diversity patterns of European beetles. Journal of Biogeography
Appendix S3. Supplementary results for a restricted dataset including only the
largest territories.
This restricted dataset includes presence/absence matrices for 19 beetle clades. The only
difference with results in main text are that matrices coded the presence/absence of
species of each clade in only the largest 18 territories (>100,000 km2). The area of each
territory, acronym, total species richness as well as the territories used for this analysis
(‘large territories’) is detailed in the table below:
Territory
Albania
Austria
Belgium
Bulgaria
Byelorussia
Croatia+Bosnia
Switzerland
Czech Republic
Germany
Denmark
Estonia
Spain
Finland
France
Greece
Hungary
Italy
Lithuania
Latvia
Macedonia
Netherlands
Norway
Poland
Portugal
Romania
Middle Russia
Northern Russia
Southern Russia
Sweden
Slovakia
Slovenia
Serbia&Montenegro
Turkey(Eur)
Ukraine
Acronym
AL
AT
BE
BG
BY
CBH
CH
CZ
DE
DK
EO
ES
FI
FR
GR
HU
IT
LT
LV
MK
NL
NO
PL
PT
RO
RSC
RSN
RSS
SE
SK
SL
SS
TR
UK
Area (km2) Large territory? Total richness
28584
No
480
83727
No
1020
30537
No
478
110144
Yes
987
206483
Yes
363
106900
Yes
1170
41351
No
852
78288
No
806
355351
Yes
836
44507
No
437
44847
No
399
497803
Yes
1248
334229
Yes
391
538145
Yes
1337
123320
Yes
1102
92503
No
907
250348
Yes
1642
64555
No
370
64024
No
431
25373
No
545
36296
No
441
319167
Yes
378
309876
Yes
813
88748
No
454
236019
Yes
869
1749564
Yes
490
1400897
Yes
400
661102
Yes
661
445550
Yes
496
48567
No
872
20074
No
687
102528
Yes
845
24787
No
312
570017
Yes
881
Overall compositional heterogeneity and multivariate pairwise structures were
computed for each clade using only these 18 territories. All other methods were exactly
the same described in the main text.
Results were markedly similar to those based on the complete dataset, suggesting that
uneven territory area had little effect in the variation of beta diversity patterns among
clades. A large proportion of variance in overall compositional heterogeneity was
explained by dispersal and ecological traits of beetle clades. For the turnover
component, both the proportion of apterous species and body size were significant
predictors, and jointly explained 67.3% of the variance in βSIM. Only trophic trait
remained as significant predictor in the ecology model, explaining 65.6% of the
variance in βSIM. The combined model (proportion of apterous+body size+trophic trait)
explained 77.6% of the variance in βSIM. For the nestedness-resultant component, only
the proportion of apterous species turned out to be significant and explained 40.3% of
the variance in the dispersal model of βSNE. Only trophic trait remained as significant
predictor in the ecology model, explaining 40.5% of the variance in βSNE. The combined
model (proportion of apterous + trophic trait) explained the 49.4% of the variance in
βSNE.
Likewise, in the reduced dataset the variation in multivariate pairwise structure was also
explained by dispersal and ecological traits. For the turnover component, the dispersal
model (proportion of apterous species+body size) explained 18.2% of the variation in
pairwise dissimilarity patterns, while the ecology model (trophic trait) explained 22.9%.
The combined model explained 32.4% of the variation. For the nestedness-resultant
component, the dispersal model (proportion of apterous species*body size) explained
24.8% of the variation in pairwise dissimilarity patterns, while the ecology model
(habitat) explained 24.5%. The combined model explained 42.7% of the variation.