Semantic resource visits

(July 2026)

# name visits
1 Chemical Functional Ontology (CHEMFONT) 14,711
2 AGROVOC (AGROVOC) 3,929
3 Traits Thesaurus (TRAITS_THES) 1,714
4 FuTRES Ontology of Vertebrate Traits (FOVT) 1,478
5 Environmental Thesaurus (ENVTHES) 1,130
6 eLTER Controlled Lists (ELTER_CL) 701
7 ACTRIS Vocabulary (ACTRIS_VOCAB) 667
8 Ontology of Integrated Carbon Observation System (ICOS) (CPMETA) 631
9 An ontology of core ecological entities (ECOCORE) 313
10 Marine Strategy Framework Directive Vocabulary (MSFDVOCAB) 261
11 MarineTLO Ontology (MARINETLO) 247
12 Social Insect Behavior Ontology (SIBO) 226
13 The Ecosystem Ontology (ECSO) 208
14 ISO 639-2: Codes for the Representation of Names of Languages - Part 2: Alpha-3 Code for the Names of Languages (ISO_639-2) 193
15 Invasion Biology Ontology (INBIO) 186
16 Soil Food Web Ontology (SFWO) 183
17 Ecological Trait-data Standard (ETS) 179
18 CODATA Research Data Management Terminology (CODATA-RDMT) 179
19 Coastal and Marine Ecological Classification Standard Catalog (CMECS) 177
20 Sandy Beach Thesaurus (SBTHES) 171
21 Ecotoxicology thesaurus (ECOTOXICTHES) 139
22 The Ecosystem Services Monitoring Ontology (ESMO) 128
23 ACTRIS Controlled Lists (ACTRIS_CL) 115
24 EuroVoc (EUROVOC) 103
25 Common geographic areas (CGA) 85
26 Endemisms Thesaurus (ENDEMISMS) 83
27 Phytoplankton VRE Thesaurus (PHYTOVRE) 78
28 SnowTerm Thesaurus (SNOWTERM) 77
29 Biodiversity Thesaurus (BIODIVTHES) 73
30 Data Categories for Marine Planning (MPD) 71
31 BioCollections Ontology (BCO) 67
32 Phytoplankton Traits Thesaurus (PHYTOTRAITS) 63
33 USGS Thesaurus (USGSTHES) 59
34 EUNIS habitats (EUNIS_HABITATS) 55
35 Geologic Units (GEOLOGIC_UNITS) 52
36 Biomass VRE Thesaurus (BIOMASSVRE) 52
37 FRBR-aligned Bibliographic Ontology (FABIO) 51
38 EuroSciVoc (EUROSCIVOC) 48
39 Alien Species Thesaurus (ALIENSPECIES) 45
40 Field of science and technology classification (FOS) 44
41 Environmental Research Infrastructures Thesaurus (ERITHES) 44
42 Paleoenvironmental Standard Terms (PaST) Thesaurus (PAST) 42
43 Biogeographical regions (BIOREGIONS) 38
44 Audubon Core subtype Controlled Vocabulary (ACSUBTYPE) 33
45 Marine Regions ontology (MR) 31
46 Audubon Core variant Controlled Vocabulary (ACVARIANT) 31
47 GeoSpecies Ontology (GEOSP) 30
48 Darwin Core Pathway Controlled Vocabulary (DWCPW) 30
49 Macroalgae Traits Thesaurus (MACROALGAETRAITS) 29
50 Darwin-SW (DSW) 29
51 The Linked Earth Core Ontology (LIPD_ONTOLOGY) 28
52 Darwin Core Degree Of Establishment Controlled Vocabulary (DWCDOE) 25
53 The Extensible Observation Ontology (OBOE) 24
54 Fish Traits Thesaurus (FISHTRAITS) 23
55 eurio (EURIO) 23
56 Darwin Core Establishment Means Controlled Vocabulary (DWCEM) 23
57 The Archive Type Ontology (ARCHIVE) 23
58 WISE Classification system (WISE_CLASS) 17
59 LifeWatch ERIC Upper Ontology (LUPO) 17
60 Lithology (LITHOLOGY) 16
61 Annex I habitats for Natura 2000 (N2000_HABITATS) 15
62 Audubon Core Controlled Vocabulary for Dublin Core format (ACFORMAT) 14
63 The Paleo Units Ontology (PALEO_UNITS) 13
64 Plant-Pollinator Interactions (PPI) 12
65 I-ADOPT Framework ontology (I-ADOPT) 11
66 The DMP Common Standard Ontology (DCSO) 11
67 Sustainable Meat Systems Ontology (SUMSO) 10
68 LifeWatch Italy Semantic Platform Ontology (SPO) 10
69 The Wildlive Monitoring Ontology (WLMO) 9
70 FAIR Implementation Profile (FIP) Ontology (FIP_ONTOLOGY) 9
71 Zooplankton Traits Thesaurus (ZOOPLANKTRAITS) 8
72 Porifera Ontology (PORO) 8
73 The Provenance of Emission Calculations Ontology (PECO) 8
74 Population and Community Ontology (PCO) 8
75 Marine Regions PlaceTypes code list (MRPTCODELIST) 8
76 UMLS Semantic Network (STY) 5
77 The Paleo Proxy Ontology (PALEO_PROXY) 5
78 The Linked Earth Instrument Ontology (INSTRUMENT) 5
79 The Interpretation Ontology (INTERPRETATION) 4
80 Geologic Structures (GEO_STRUCTURES) 4
81 FAIR Vocabulary (FAIR_VOCABULARY) 3