Semantic resource visits

(January 2026)

# name visits
1 Chemical Functional Ontology (CHEMFONT) 1,144
2 Traits Thesaurus (TRAITS_THES) 850
3 EuroVoc (EUROVOC) 492
4 Phytoplankton VRE Thesaurus (PHYTOVRE) 388
5 Environmental Thesaurus (ENVTHES) 379
6 BioCollections Ontology (BCO) 176
7 Soil Food Web Ontology (SFWO) 124
8 Environmental Research Infrastructures Thesaurus (ERITHES) 112
9 AGROVOC (AGROVOC) 103
10 Phytoplankton Traits Thesaurus (PHYTOTRAITS) 89
11 ACTRIS Vocabulary (ACTRIS_VOCAB) 81
12 Biodiversity Thesaurus (BIODIVTHES) 80
13 Biomass VRE Thesaurus (BIOMASSVRE) 75
14 The Ecosystem Ontology (ECSO) 71
15 FuTRES Ontology of Vertebrate Traits (FOVT) 70
16 Coastal and Marine Ecological Classification Standard Catalog (CMECS) 70
17 Ontology of Integrated Carbon Observation System (ICOS) (CPMETA) 65
18 The Interpretation Ontology (INTERPRETATION) 56
19 Invasion Biology Ontology (INBIO) 50
20 An ontology of core ecological entities (ECOCORE) 50
21 SnowTerm Thesaurus (SNOWTERM) 49
22 Fish Traits Thesaurus (FISHTRAITS) 47
23 Field of science and technology classification (FOS) 44
24 EuroSciVoc (EUROSCIVOC) 43
25 Sandy Beach Thesaurus (SBTHES) 42
26 Population and Community Ontology (PCO) 40
27 Ecotoxicology thesaurus (ECOTOXICTHES) 40
28 eLTER Controlled Lists (ELTER_CL) 38
29 Annex I habitats for Natura 2000 (N2000_HABITATS) 36
30 ISO 639-2: Codes for the Representation of Names of Languages - Part 2: Alpha-3 Code for the Names of Languages (ISO_639-2) 36
31 Sustainable Meat Systems Ontology (SUMSO) 35
32 The Paleo Proxy Ontology (PALEO_PROXY) 33
33 FAIR Implementation Profile (FIP) Ontology (FIP_ONTOLOGY) 32
34 The Ecosystem Services Monitoring Ontology (ESMO) 29
35 Ecological Trait-data Standard (ETS) 28
36 Zooplankton Traits Thesaurus (ZOOPLANKTRAITS) 27
37 The Paleo Units Ontology (PALEO_UNITS) 27
38 Paleoenvironmental Standard Terms (PaST) Thesaurus (PAST) 25
39 Geologic Structures (GEO_STRUCTURES) 25
40 Porifera Ontology (PORO) 24
41 MarineTLO Ontology (MARINETLO) 23
42 Macroalgae Traits Thesaurus (MACROALGAETRAITS) 23
43 Lithology (LITHOLOGY) 23
44 FAIR Vocabulary (FAIR_VOCABULARY) 21
45 FRBR-aligned Bibliographic Ontology (FABIO) 21
46 LifeWatch ERIC Upper Ontology (LUPO) 19
47 eurio (EURIO) 19
48 CODATA Research Data Management Terminology (CODATA-RDMT) 17
49 Audubon Core subtype Controlled Vocabulary (ACSUBTYPE) 16
50 Geologic Units (GEOLOGIC_UNITS) 15
51 The Extensible Observation Ontology (OBOE) 14
52 Darwin Core Degree Of Establishment Controlled Vocabulary (DWCDOE) 14
53 Darwin-SW (DSW) 13
54 The DMP Common Standard Ontology (DCSO) 12
55 The Linked Earth Core Ontology (LIPD_ONTOLOGY) 11
56 Darwin Core Establishment Means Controlled Vocabulary (DWCEM) 10
57 I-ADOPT Framework ontology (I-ADOPT) 9
58 Darwin Core Pathway Controlled Vocabulary (DWCPW) 9
59 Endemisms Thesaurus (ENDEMISMS) 8
60 The Archive Type Ontology (ARCHIVE) 8
61 Alien Species Thesaurus (ALIENSPECIES) 8
62 Audubon Core variant Controlled Vocabulary (ACVARIANT) 8
63 Marine Strategy Framework Directive Vocabulary (MSFDVOCAB) 7
64 Marine Regions PlaceTypes code list (MRPTCODELIST) 7
65 EUNIS habitats (EUNIS_HABITATS) 7
66 UMLS Semantic Network (STY) 6
67 Plant-Pollinator Interactions (PPI) 6
68 ACTRIS Controlled Lists (ACTRIS_CL) 6
69 Audubon Core Controlled Vocabulary for Dublin Core format (ACFORMAT) 5
70 Social Insect Behavior Ontology (SIBO) 4
71 Marine Regions ontology (MR) 4
72 GeoSpecies Ontology (GEOSP) 3
73 The Provenance of Emission Calculations Ontology (PECO) 2
74 The Linked Earth Instrument Ontology (INSTRUMENT) 2
75 Biogeographical regions (BIOREGIONS) 2
76 WISE Classification system (WISE_CLASS) 0