Table S1. Information sources for species identification.

J. Aoki (1999) Pictorial keys in soil animals of Japan. Pages 1076. TokaiUniversity Press, Hadano, Japan

S. Ehara (1980) Illustrations of the mites and ticks of Japan. Pages 562. ZennoukyoTsukuba, Japan

Table S2. Functional traits used in the analysis.

Functional effect trait / Type
Body length / Continuous
Body ratio (front-to-back ratio) / Continuous
Presence/absence of Pteromorphae / Binomial
Sensillus type / Nominal
Seta type / Nominal
Surface structure / Nominal
Dietary type / Nominal
Macropylina/Gymnonota/Poronota category / Nominal

Table S3. Total abundance for each species observed in this study.

Species / Abundance
Allodamaeustransitus / 9
Allosuctobelbajaponicus / 12
Archoplophoravillosa / 19
Atopochthoniusartiodactylus / 85
Atropacarusstriculus / 72
Autognetasp1 / 3
Brachychthoniushungaricus / 48
Brachychthoniusimptrssus / 276
Brachychthoniussp1 / 17
Carabodesikehatai / 5
Ceratoppiaqunsridentata / 2
Ceratozetessp1 / 172
Cultroriblalata / 192
Dolicheremaeuselongatus / 4
Eohypochthoniusmagnus / 2
Epidamaeusfragilis / 67
Epidamaeussp1 / 1
Epidamaeussp2 / 1
Epidamaeussp3 / 4
Epidamaeussp4 / 4
Epilohmanniapallidapacifica / 26
Epilohmanoidesesulcatus / 68
Eremaeustenuisetiger / 21
Eremobelbajaponica / 26
Eulohmamnniaribagai / 22
Eupelopspcromios / 1
Fissicepheus / 1
Fosseremusquadripertitus / 4
Gustaviamicrocephala / 3
Gymnodammpiacrasissetiger / 53
Heminothruslongisetosus / 71
Heminothrussp1 / 3
Heminothrussp2 / 2
Heminothrusyamasakii / 50
Hypochthoniellaminutissima / 41
Hypochthoniusrufulus / 3
Incabatessp1 / 2
Lepidozetessingularis / 108
Liochthoniussp1 / 601
Liochthoniussp2 / 457
Liochthoniussp3 / 6
Liochthoniussp4 / 29
Liochthoniussp5 / 2
Liochthoniussp6 / 8
Microppiaminus / 52
Multioppiasp1 / 5
Multioppiasp2 / 46
Mycobatessp1 / 1
Neoribatesroubali / 13
Nothrusbiciliatus / 17
Nothrusborussicus / 61
Nothruspalpucus / 7
Nothrussilvestris / 42
Nothrussp1 / 5
Oppiasp1 / 18
Oppiellanova / 1950
Oribatulasp1 / 60
Palaeacaroidespacificus / 142
Palaeacarushystricinusjaponicus / 69
Parachipteriadistincta / 154
Pergalumnaaltera / 33
Pergalumnaintermedia / 20
Pergalumnasp1 / 12
Pergalumnasp2 / 15
Phthiracarussetosus / 7
Platyloidesjaponicus / 1
Platynothruspeltifer / 180
Poecilochthoniusspiciger / 80
Protoribotritiasp1 / 1
Pterochthoniusangelus / 137
Rhysotritiaardua / 24
Scheloribatessp1 / 251
Scheloribatessp2 / 37
Sellnockochthoniuszelawaiensis / 293
Tectocepheuselegans / 436
Tectocepheusvelatus / 157
Trhypochthoniusjaponicus / 10
Trhypochthoniusseptentrionalis / 1
Trimalaconothrussp1 / 4
Truncopesyoshidai / 7
Trycogalumnaarborea / 8
Xylobatessp1 / 73
Xylobatessp2 / 1
Zachvatkinellanipponica / 39

Fig. S1. The changes in the community-weighted mean (CWM) of body length for oribatid communities along the gradient of stand homogenization. CWM is the community-wide mean values of a focal trait(Garnier et al. 2004; Lavorel et al. 2008). rBA represents the relative basal area of larch tree species in each stand. The adjusted R2 valuebased on the jackknife regression (R2adj) is shown. The significance level is indicated withan asterisk: * P < 0.05.The result is from Mori et al. (2015).

Garnier E et al. (2004) Plant functional markers capture ecosystem properties during secondary succession. Ecology 85:2630-2637

Lavorel S et al. (2008) Assessing functional diversity in the field – methodology matters! Functional Ecology 22:134-147

Mori AS et al. (2015) Biotic homogenization and differentiation of soil faunal communities in the production forest landscape: taxonomic and functional perspectives. Oecologia 177:533-544

Fig. S2.The relationships between taxonomic and functional dissimilarity. Dots represent values for each pair of subplots within each stand. The dotted white lines indicate a 1:1 relationship between the taxonomic and functional indices.