Digital Research Records at Center for Environmental Studies

Peter McCartney

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• Distributed Resources
  • 5 institutions, 8 departments
• Biodiversity
  • Taxonomic information Browsing
  • Collections query
  • Species checklists
  • Identification Keys
• Research metadata
  • Datasets, Literature,Images, Protocols, Models
• Data access
  • Download, Visualization, EDA

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History

• LTER Mandate to provide long-term management of Ecological Data
• Expand ASU Capacity for large environmental initiatives through integration
• Develop more effective data sharing with central Arizona partner (Federal, State, Municipal, NGO)

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Model for EcoInformatics

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Distributed computing

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Ecological Data Archives

• Diversity in formats, schema, size, organization.
  • Tabular — SQL, ASCII, App formats
  • GIS — shapefiles, SDE, coverages
  • Raster — raw, SDE, Remote sensing, Erdas, ESRI Grid
• Standards and procedures may exist within individual archives
  • Few standards at network level

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Ecological Metadata Language

• Serve to integrate, rather than dictate, site solutions for data management
  • ASU, Central Arizona, Naitonal LTER network, OBFS
• Machine parsable
  • Based on XML
• Build on existing standards
  • FLED, Dublin core, ISO 19115, FGDC

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EML 2.0 Design

• Modular, with classes relating to specific functional roles
• Uses XML Schema complex types to define extensible base classes of information resources
• Extensible via the linking of new modules within the schema
• Organized to abstract the logical description of data from the physical

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EML Related Projects at CES

• Xylographa — Metadata Creation
• Xanthoria — Metadata Query
• Xylopia — Metadata mediated Access

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Xylographa: Metadata Cretation

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Xanthoria: Metadata Query

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RDBMS Connector

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Xanthoria Methods

• ping(src): boolean
• query(returnfields, querygroup, query statement, src): Element
• getFullRecordElement(id, src): Element
• getFullRecordPath(id, src): String
• load(file, src): String

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Xanthoria Query Request

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Xanthoria Query Reply

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Xanthoria Request

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Xanthoria Reply

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Xylopia: Metadata Mediate Access

A web-service (Apache SOAP) based data analysis application for EML

• Uses EML Metadata to resolve message content
• Modules for:
  • Data Query
  • Processing
  • Visualization
  • Analysis

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Xylopia Components

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Typical Xylopia Workflow

• EML Query message built by the app/user
• App sends the message to the Data Collector
• Data Collector finds the data, puts it into an ascii file and places the data and a new 'clipped eml' into a designated drop box
• App gets these data and displays it to the user
• If the user requests a graph or statistics on these data, the 'clipped eml' and ascii file is usually used by these web services
• If the user requests mapping data, the Data Collector's output varies depending on the requested file's format

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