Controlled Vocabulary for Audubon Core variant: List of Terms
Title: Controlled Vocabulary for Audubon Core variant: List of Terms
Namespace URI: http://rs.tdwg.org/acvariant/values/
Preferred namespace abbreviation: acvariant:
Date version issued: 2020-10-13
Date created: 2020-10-13
Part of TDWG Standard: http://www.tdwg.org/standards/638
This version: http://rs.tdwg.org/ac/doc/variant/2020-10-13
Latest version: http://rs.tdwg.org/ac/doc/variant/
Abstract: Audubon Core uses the terms
ac:variantLiteral to provide information about the size, extent, and availability of the Service Access Point of a media item. This controlled vocabulary provides values for those terms.
Contributors: Steven J Baskauf (Vanderbilt University Heard Libraries), Ed Baker (Natural History Museum, London), Dan Stowell (Queen Mary University of London / Alan Turing Institute)
Creator: TDWG Audubon Core Maintenance Group
Bibliographic citation: Audubon Core Maintenance Group. 2020. Controlled Vocabulary for Audubon Core variant: List of Terms. Biodiversity Information Standards (TDWG). http://rs.tdwg.org/ac/doc/variant/2020-10-13
1 Introduction (informative)
This document includes terms intended to be used as a controlled value for Audubon Core terms
1.1 Status of the content of this document
Section 1 is informative (non-normative).
Section 2 is normative.
Section 3 is informative (non-normative).
In Section 4, the values of the
Controlled value are normative. The value of
Usage (if it exists for a given term) is normative. The values of
Term Name are non-normative, although one can expect that the namespace abbreviation prefix is one commonly used for the term namespace.
Label and the values of all other properties are non-normative.
1.2 RFC 2119 key words
The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”, “RECOMMENDED”, “MAY”, and “OPTIONAL” in this document are to be interpreted as described in RFC 2119.
2 Use of Terms
2.1 Relationship of value types to property terms
In accordance with the Audubon Core Term List document, unabbreviated term IRIs SHOULD be used as values of the property
ac:variant. Controlled value strings SHOULD be used as values of the property
2.2 Relationship between values of ac:variantLiteral and ac:variant
An IRI for a term in this vocabulary denotes the same concept as the concept denoted by the controlled value string for the same term. Thus a client MAY infer an IRI value for
ac:variant given a controlled value string for
ac:variantLiteral even if that IRI is not explicitly stated. The practical implication is that data aggregators MAY materialize values for the preferred
ac:variant property in cases where providers only provide values for
3 Term index
Best Quality |
Good Quality |
Lower Quality |
Medium Quality |
variant concept scheme