Vulpes vulpes




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Table S1. Ecological indicators used to suggest whether each of the 27 currently recognized varanid lizard species on the Australian mainland are likely to compete with the introduced mammalian predators, red fox Vulpes vulpes and feral cat Felis catus. The distributions of foxes and cats are taken from Van Dyck & Strahan ; varanid species distributions, snout-vent lengths (SVL), habitat types and foraging habits from Pianka et al. . Foraging habits are as defined in Greer .

species

distribution overlap with fox

size class (maximum SVL)

habitat type

foraging habit

dietary overlap with cats

dietary overlap with foxes

non-empty diet samples

references for dietary intake

V. acanthurus

no

250

rocky outcrop

ambush

0.518

0.308

315




V. baritji

no

250

rocky outcrop

active







0




V. brevicauda

low

110

ground

ambush

0.516

0.303

132




V. bushi

yes

140

arboreal

? active







0




V. caudolineatus

yes

120

arboreal

active

0.519

0.305

34




V. doreanus

no

460

ground

active







0




V. eremius

yes

160

ground

wide-ranging

0.347

0.175

128




V. giganteus

yes

880

ground

wide-ranging

0.655

0.588

32




V. gilleni

yes

190

arboreal

active

0.530

0.302

69




V. glauerti

no

250

rocky outcrop / arboreal

active

0.521

0.305

29




V. glebopalma

no

400

rocky outcrop

ambush

0.361

0.183

30




V. gouldii

yes

360

ground

wide-ranging

0.588

0.374

268




V. indicus

no

480

arboreal/
aquatic

active

0.568

0.361

41




V. keithhornei

no

260

arboreal

active







0




V. kingorum

no

110

rocky outcrop

active

0.494

0.297

3




V. mertensi

no

520

arboreal/
aquatic

aquatic

0.528

0.333

142




V. mitchelli

no

320

arboreal/
aquatic

active/aquatic

0.526

0.328

43




V. panoptes

low

740

ground

wide-ranging

0.546

0.332

77




V. pilbarensis

low

170

rocky outcrop

unknown

0.520

0.297

6




V. primordius

no

120

rocky outcrop

unknown

0.508

0.290

6




V. rosenbergi

yes

400

ground

wide-ranging

0.645

0.435

219




V. scalaris

no

250

arboreal

active

0.518

0.305

44




V. semiremex

low

250

arboreal/
aquatic

aquatic

0.470

0.282

4




V. spenceri

low

550

ground

wide-ranging

0.811

0.659

10




V. storri

no

130

rocky outcrop

active

0.523

0.305

26




V. tristis

yes

300

arboreal

active

0.497

0.274

75




V. varius

yes

760

arboreal/
ground

wide-ranging

0.982

0.957

144




Felis catus

yes










1.000

0.961

1157




Vulpes vulpes













0.961

1.000

1867




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