Links to introductory and advanced information on metadata, metadata software tools, downloadable software packages for producing metadata and general information on metadata in Spanish.
Browsable online access to the CSA/NBII Biocomplexity Thesaurus developed in 2002-2003 through a partnership between the NBII and CSA as a merger of five thesauri.
Describes the content metadata standard used by the Marine Realms Information Bank, a distributed geolibrary that catalogues and provides access to information about marine, coastal, and lake environments.
Specialized scientific software to generate temporal and spatial subsets of multi-dimensional data files, and to re-express those subsets in human-readable and simpler computer-readable formats.
Description of the use of Place Keyword Assistant, a software tool, for tagging metadata with geographic names from standardized lists or controlled vocabularies. Includes instructions on use and downloading software files.
Tutorial on geospatial semantics with hands-on exercises using standard Web browsers, divided into two sections, general semantics on the Web and specific examples of geospatial semantics using data from The Open Ontology Repository.
Land Remote Sensing Program (LRS) provides a primary source of remotely sensed data and applications of land remote sensing, nationally and internationally.
Technical information about several water resource database projects with local, regional, and national scope including the National Environmental Methods Index, the National Water Quality Assessment Data Warehouse, and the USGS Publications Warehouse.
Homepage for the USGS library system with links to the four libraries of the system, online catalog, forms to request information, photo archive, new acquisitions lists, and links to other useful sources of information.