: The Darwin Core term `pathway` provides information about the process by which an Organism came to be in a given place at a given time. The Pathway Controlled Vocabulary provides terms that should be used as values for `dwc:pathway` and `dwciri:pathway`.
Contributors
: Quentin Groom, Peter Desmet, Lien Reyserhove, Tim Adriaens, Damiano Oldoni, Sonia Vanderhoeven, Steven J Baskauf, Arthur Chapman, Melodie McGeoch, Ramona Walls, John Wieczorek, John R.U. Wilson, Paula F F Zermoglio, Annie Simpson
: Darwin Core Maintenance Group. 2021. Pathway Controlled Vocabulary List of Terms. Biodiversity Information Standards (TDWG). <http://rs.tdwg.org/dwc/doc/pw/2021-09-01>
This document includes terms intended to be used as a controlled value for Darwin Core terms with local name `pathway`. For details and rationale, see Groom et al. 2019. Improving Darwin Core for research and management of alien species. <https://doi.org/10.3897/biss.3.38084>
### 1.1 Status of the content of this document
In Section 4, the values of the `Term IRI`, `Definition`, and `Controlled value` are normative. The value of `Usage` (if it exists for a given term) is normative. The value of `Has broader concept` 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 (such as `Notes`) 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](https://tools.ietf.org/html/rfc2119).
## 2 Use of Terms
Due to the requirements of [Section 1.4.3 of the Darwin Core RDF Guide](https://dwc.tdwg.org/rdf/#143-use-of-darwin-core-terms-in-rdf-normative), term IRIs MUST be used as values of `dwciri:pathway`. Controlled value strings MUST be used as values of `dwc:pathway`.
