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DELTA (DEscription Language for TAxonomy) is a data format used in
taxonomy Taxonomy is the practice and science of categorization or classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which things are organized into groups or types. ...
for recording descriptions of living things. It is designed for computer processing, allowing the generation of identification keys,
diagnosis Diagnosis is the identification of the nature and cause of a certain phenomenon. Diagnosis is used in many different disciplines, with variations in the use of logic, analytics, and experience, to determine "cause and effect". In systems engin ...
, etc. It is widely accepted as a standard and many programs using this format are available for various taxonomic tasks. It was devised by the
CSIRO The Commonwealth Scientific and Industrial Research Organisation (CSIRO) is an Australian Government agency responsible for scientific research. CSIRO works with leading organisations around the world. From its headquarters in Canberra, CSIRO ...
Australian Division of Entomology in 1971 to 2000, with a notable part taken by Dr. Michael J. Dallwitz. More recently, the
Atlas of Living Australia The Atlas of Living Australia (ALA) is an online repository of information about Australian plants, animals, and fungi. Development started in 2006. The Commonwealth Scientific and Industrial Research Organisation (CSIRO) is an organisation sig ...
(ALA) rewrote the DELTA software in
Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's mo ...
so it can run in a Java environment and across multiple operating systems. The software package can now be found at and downloaded from the ALA site.


DELTA System

The DELTA System is a group of integrated programs that are built on the DELTA format. The main program is the DELTA Editor, which provides an interface for creating a matrix of characters for any number taxa. A whole suite of programs can be found and run from within the DELTA editor which allow for the output of an interactive identification key, called Intkey. Other powerful features include the output of natural language descriptions, full diagnoses, and differences among taxa.


References


External links


DELTA for beginners. An introduction into the taxonomy software package DELTA
* {{Official website, http://delta-intkey.com Taxonomy (biology)