Semantic resource visits

(September 2026)

# name visits
1 Chemical Functional Ontology (CHEMFONT) 38,770
2 FuTRES Ontology of Vertebrate Traits (FOVT) 8,015
3 Common geographic areas (CGA) 4,975
4 An ontology of core ecological entities (ECOCORE) 3,763
5 AGROVOC (AGROVOC) 3,131
6 Ecotoxicology thesaurus (ECOTOXICTHES) 3,115
7 ACTRIS Vocabulary (ACTRIS_VOCAB) 2,485
8 Environmental Thesaurus (ENVTHES) 2,238
9 Soil Food Web Ontology (SFWO) 1,839
10 SnowTerm Thesaurus (SNOWTERM) 1,678
11 Biodiversity Thesaurus (BIODIVTHES) 1,600
12 Geologic Units (GEOLOGIC_UNITS) 1,318
13 Coastal and Marine Ecological Classification Standard Catalog (CMECS) 1,284
14 BioCollections Ontology (BCO) 907
15 Invasion Biology Ontology (INBIO) 889
16 ISO 639-2: Codes for the Representation of Names of Languages - Part 2: Alpha-3 Code for the Names of Languages (ISO_639-2) 728
17 Traits Thesaurus (TRAITS_THES) 718
18 Geologic Structures (GEO_STRUCTURES) 656
19 Paleoenvironmental Standard Terms (PaST) Thesaurus (PAST) 648
20 CODATA Research Data Management Terminology (CODATA-RDMT) 648
21 EuroSciVoc (EUROSCIVOC) 627
22 WISE Classification system (WISE_CLASS) 575
23 Ontology of Integrated Carbon Observation System (ICOS) (CPMETA) 548
24 Annex I habitats for Natura 2000 (N2000_HABITATS) 531
25 Biomass VRE Thesaurus (BIOMASSVRE) 523
26 The Paleo Units Ontology (PALEO_UNITS) 495
27 EuroVoc (EUROVOC) 479
28 eLTER Controlled Lists (ELTER_CL) 425
29 The Ecosystem Services Monitoring Ontology (ESMO) 394
30 Environmental Research Infrastructures Thesaurus (ERITHES) 386
31 Lithology (LITHOLOGY) 368
32 Sustainable Meat Systems Ontology (SUMSO) 352
33 MarineTLO Ontology (MARINETLO) 333
34 Sandy Beach Thesaurus (SBTHES) 326
35 FAIR Implementation Profile (FIP) Ontology (FIP_ONTOLOGY) 310
36 The Paleo Proxy Ontology (PALEO_PROXY) 308
37 Phytoplankton VRE Thesaurus (PHYTOVRE) 293
38 Alien Species Thesaurus (ALIENSPECIES) 272
39 GeoSpecies Ontology (GEOSP) 266
40 Phytoplankton Traits Thesaurus (PHYTOTRAITS) 260
41 eurio (EURIO) 224
42 Fish Traits Thesaurus (FISHTRAITS) 217
43 The Linked Earth Core Ontology (LIPD_ONTOLOGY) 202
44 FRBR-aligned Bibliographic Ontology (FABIO) 194
45 Data Categories for Marine Planning (MPD) 193
46 Population and Community Ontology (PCO) 191
47 Macroalgae Traits Thesaurus (MACROALGAETRAITS) 183
48 The Extensible Observation Ontology (OBOE) 179
49 The Ecosystem Ontology (ECSO) 168
50 FAIR Vocabulary (FAIR_VOCABULARY) 147
51 Porifera Ontology (PORO) 143
52 Darwin Core Pathway Controlled Vocabulary (DWCPW) 140
53 The Provenance of Emission Calculations Ontology (PECO) 132
54 Ecological Trait-data Standard (ETS) 131
55 The DMP Common Standard Ontology (DCSO) 129
56 Audubon Core Controlled Vocabulary for Dublin Core format (ACFORMAT) 116
57 Zooplankton Traits Thesaurus (ZOOPLANKTRAITS) 115
58 Field of science and technology classification (FOS) 115
59 The Interpretation Ontology (INTERPRETATION) 104
60 The Wildlive Monitoring Ontology (WLMO) 94
61 Darwin-SW (DSW) 92
62 I-ADOPT Framework ontology (I-ADOPT) 79
63 Audubon Core subtype Controlled Vocabulary (ACSUBTYPE) 79
64 EUNIS habitats (EUNIS_HABITATS) 72
65 LifeWatch ERIC Upper Ontology (LUPO) 69
66 Biogeographical regions (BIOREGIONS) 64
67 The Archive Type Ontology (ARCHIVE) 64
68 Marine Regions ontology (MR) 57
69 Endemisms Thesaurus (ENDEMISMS) 57
70 Social Insect Behavior Ontology (SIBO) 54
71 Darwin Core Degree Of Establishment Controlled Vocabulary (DWCDOE) 54
72 USGS Thesaurus (USGSTHES) 53
73 LifeWatch Italy Semantic Platform Ontology (SPO) 52
74 Plant-Pollinator Interactions (PPI) 52
75 Darwin Core Establishment Means Controlled Vocabulary (DWCEM) 52
76 Marine Strategy Framework Directive Vocabulary (MSFDVOCAB) 48
77 ACTRIS Controlled Lists (ACTRIS_CL) 47
78 Audubon Core variant Controlled Vocabulary (ACVARIANT) 37
79 The Linked Earth Instrument Ontology (INSTRUMENT) 31
80 Marine Regions PlaceTypes code list (MRPTCODELIST) 22
81 UMLS Semantic Network (STY) 20
82 Pollinator Ontology (POLON) 18