ABSTRACT

Douglas J. Eernisse
Department of Biological Science, California State University, Fullerton, CA 92834-6850 USA
E-mail:
deernisse@fullerton.edu

Chiton Stacks software: Integrated taxonomic and biogeographic database for worldwide chitons

An integrated software package featuring a compilation of taxonomic and biogeographic data for living and fossil chiton species worldwide is described. This software was programmed over a decade ago using Apple’s HyperCard program for Macintosh computers, and has since been used exclusively by the author to maintain a current species database. This compilation for all recognized species and its associated biogeographic analysis is being published separately (including a current compilation of all nominal species and synonymies), but this contribution provides an overview of the software’s capabilities, parts of which are planned for public release. The incentive for the development of Chiton Stacks was to provide a convenient means of updating a global database of worldwide chitons, whenever new publications or other sources of data became available. This software could potentially be adapted for other marine taxa. Among its most useful features are various utilities for point-and-click entering of distribution records on a series of regional maps, as well as various semi-automated methods of generating biogeographic reports. These include reports organized by marine biogeographic province, including map plotting of all type localities by province, spreadsheet-format global distribution matrices for species or higher-level taxa, and stand-alone indexed HyperCard “stacks” of all appropriate range maps of any species reported for one or more provinces. Range data is maintained efficiently as map coordinates for each species, not as map images, so province boundaries or higher-taxonomic assignment can be adjusted and then all reports recalculated with few additional modifications. Chiton Stacks also provides a convenient way to organize image files, including URL links to the many images available on the Web. Over 600 links to such Web images of chitons are currently entered in the database, representing more than 220 of the approximately 850 currently recognized living chiton species. These chiton image Web links have been exported in more concise form as a single html-format Web page, organized systematically by species, 
and a link to a current version of this Web page is provided herein. 

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