What is controlled vocabulary? http://controlledvocabulary.com/
Managing metadata workflow – https://www.globaledit.com/blog/5-steps-managing-workflow-metadata/
Ecological data – Morpho – http://knb.ecoinformatics.org/morphoportal.jsp
Biological data – Darwin Core – http://rs.tdwg.org/dwc/index.htm.
Darwin Core – examples. http://code.google.com/p/darwincore/wiki/Examples
Scientific data – Directory Interchange Format (DIF) – http://gcmd.gsfc.nasa.gov/User/difguide/difman.html
Darwin Core is a standard maintained by the Darwin Core maintenance group. It includes a glossary of terms (in other contexts these might be called properties, elements, fields, columns, attributes, or concepts) intended to facilitate the sharing of information about biological diversity by providing identifiers, labels, and definitions. Darwin Core is primarily based on taxa, their occurrence in nature as documented by observations, specimens, samples, and related information.
Ecological Metadata Language (EML) is a metadata specification developed by the ecology discipline and for the ecology discipline. It is based on prior work done by the Ecological Society of America and associated efforts (Michener et al., 1997, Ecological Applications). EML is implemented as a series of XML document types that can by used in a modular and extensible manner to document ecological data. Each EML module is designed to describe one logical part of the total metadata that should be included with any ecological dataset.
In addition to selecting a metadata standard or schema, whenever possible you should use a controlled vocabulary. A controlled vocabulary provides a consistent way to describe data . Examples of controlled vocabularies include subject headings, thesauri, ontologies, and taxonomies. Using a controlled vocabulary will aid in searching and finding your data and will make your data more shareable with researchers in the same discipline.
Data repositories may require specific metadata standards and formats in order to deposit data. It is important to determine metadata standards used by a repository before beginning the metadata plan for your data.
Embed the original file name into the file itself. http://www.controlledvocabulary.com/imagedatabases/filename2title.html
Be careful: when you upload a file to online sites, some of them might ignore or strip out your metadata. Check out which ones preserve metadata. http://embeddedmetadata.org/social-media-test-results.php