A thesaurus is a structured list of approved subject headings (also known as "preferred terms") that shows the relationships among those terms; such relationships include broader/parent terms, narrower/child terms, and related terms. The thesaurus also acts as a controlled vocabulary that specifies non-preferred terms (terms that should not be used for indexing or retrieval) and references the preferred concept that should be used instead. Some thesauri also include term definitions, and/or scope notes that explain a particular context in which a term is being used.
Description: AGROVOC is a multilingual, structured and controlled vocabulary designed to cover the terminology of all subject fields in agriculture, forestry, fisheries, food and related domains, such as environment. Resource Type: Thesauri, Glossaries, and Dictionaries Resource Format: URL Publisher: United Nations, Food and Agriculture Organization (FAO)
Description: Containing nearly 5600 descriptors and more than 6500 terms, GEMET is the reference vocabulary for the European Environment Agency ( EEA ). Offered in 21 languages represented in the European Union, GEMET is intended as a common general language or terminology for the environment. GEMET offers broader, narrower, and related terms, and more than 4,000 terms provide definitions. Resource Type: Thesauri, Glossaries, and Dictionaries Resource Format: URL Publisher: European Environment Information and Observation Network ( EIONET )
Description: This is a thesaurus of terms used in the management of invasive species. The 121 terms are in three languages: English, Spanish, Portuguese thesaurus. Also provided is RDF markup for use with the Simple Knowledge Organisation System (SKOS). Resource Type: Thesauri, Glossaries, and Dictionaries Resource Format: URL Publisher: Information Center for the Environment, University of California, Davis
Description: ETDE’s focus is to cover subjects of interest to the IEA and ETDE’s international audience of database users. The information covered includes such important topics as environmental aspects of energy production, consumption, and use; energy efficiency and conservation; energy policy; renewable energy sources; end-use technology; fusion, fossil, and nuclear energy; and advanced energy systems. Coverage also includes the basic sciences that support energy R&D, such as aspects of chemistry, engineering, environmental sciences (with emphasis on global climate change), physics, biomedical sciences, materials science, computer science, mathematics, and instrumentation related to energy technology. Resource Type: Thesauri, Glossaries, and Dictionaries Resource Format: URL Publisher: Department of Energy, Office of Scientific and Technical Information
Description: From the site: "The Thesaurus is organized into 17 subject categories, indicated by the "Subject Category" designation in the thesaurus. Use the subject categories and other topics to browse the Thesaurus in a specific discipline or subject area. The subject scope of agriculture is broadly defined and includes terminology in the supporting biological, physical and social sciences. Biological nomenclature comprises a majority of the terms in the thesaurus[.]" Major subject headings include: Animals and Livestock; Education and Outreach; Food and Nutrition; History, Art and Biography; Laws and Regulations; Marketing and Trade; Natural Resources and the Environment; Plants and Crops; Research and Technology; and Rural and Community Development. Resource Type: Thesauri, Glossaries, and Dictionaries Resource Format: URL Publisher: United States Department of Agriculture, National Agricultural Library
Description: The USGS Thesaurus is the principal controlled vocabulary supporting USGS Science Topics. It is designed as a formal thesaurus conforming to ANSI/NISO Z39.19, with rigid adherence to the hierarchical (BT, NT) term relationships, generic non-hierarchical (RT) relationships, and lead-in term relationships linking non-preferred terms to descriptors either singly (UF) or in a compound USE-WITH relationship. The thesaurus facets include science, methods, product types, topics, time periods, and institutional structures and activities. General areas covered include earth sciences, life sciences, engineering sciences, planetary sciences, social sciences, and information sciences. Resource Type: Thesauri, Glossaries, and Dictionaries Resource Format: URL Publisher: United States Geological Survey (USGS)