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Introduction to the Dryad Digital Repository . A nonprofit repository for data underlying the international scientific and medical literature. April 2013. 1. The End To make data archiving and reuse standard within scientific communication. The Means

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introduction to the dryad digital repository

Introduction to the Dryad Digital Repository

A nonprofit repository for data underlying the international scientific and medical literature.

April 2013



The End

    • To make data archiving and reuse standard within scientific communication.
  • The Means
    • Enable low-burden data archiving at the time of manuscript submission.
    • Promote researcher benefits from data archiving.
    • Promote responsible data reuse.
    • Empower journals, societies & publishers in shared governance.
    • Ensure sustainability and long-term preservation.
  • The Scope
    • Research data in science and medicine
    • Primarily data underlying findings in peer-reviewed articles
    • Also data from some non-peer reviewed publications (e.g. dissertations)
    • And some non-data content (e.g. software scripts, figures)

the value proposition
The value proposition
  • For authors and researchers, Dryad…
    • increases the impact of, and citations to, published research
    • preserves and makes available others’ data
    • frees researchers from the burden of data preservation and access
  • For journals, publishers, and societies, Dryad…
    • frees journals from the burden of maintaining supplemental data
    • supports all varieties of data archiving policies
  • For libraries and institutions, Dryad…
    • makes data available at no cost, under clear terms of use
    • helps fulfill their research data management mandates
  • For funders, Dryad…
    • provides a cost-effective mechanism to make research more accessible

data archiving has many benefits
Data archiving has many benefits

Modified from Beagrie et al. (2009) Keeping Research Data Safe 2

dryad focuses on the long tail of orphan data
Dryad focuses on the long tail of orphan data

Specialized repositories

(e.g. GenBank, GBIF)

Many datasets belong to the long tail. Though less standardized, they can be rich in information content and have unique value


Orphan data

Rank frequency of datatype

After Heidorn (2008)

why use dryad rather than supplementary online materials
Why use Dryad rather than Supplementary Online Materials?

* A few publisher SOM sites are exceptions to the general rule

** Practices differ among publishers, see Smit (2011), doi:10.1045/january2011-smit


Journals benefit when data is reused

A “Data Package” is all of the data files for a journal article. All Dryad data packages link to the associated journal article.

dryad integrates article and data submission
Dryad integrates article and data submission

Dryad works with the manuscript workflow of journals to:

  • Simplify the process of data submission for authors,
  • Allow authors to deposit, to a single repository, gigabytes of data files in their original formats,
  • Ensure permanent bidirectional links between the article and the data, and increased visibility for both,
  • Ensure that the data is accessible once the article becomes available,
  • Offer the option of making data available for editorial or peer review, via secure access for editors and reviewers,
  • Give authors the option to embargo public access to data for a limited time after publication, if permitted by the journal\'s data policy.

Options are customized to meet the requirements of each journal.

over 30 integrated partner journals
Over 30 integrated partner journals

.. and more being added regularly

The American Naturalist

Biology Letters

BMJ Open

Biological Journal of the Linnean Society

Ecological Monographs


Evolutionary Applications


Functional Ecology

gms German Medical Science


Journal of Animal Ecology

Journal of Evolutionary Biology

Journal of Fish and Wildlife Management

Journal of Heredity

Journal of Open Public Health Data

Journal of Paleontology

Methods in Ecology and Evolution

Molecular Ecology and M.E. Resources


PLoS Biology, PLOS Genetics

Systematic Biology

ZooKeys & 7 other Pensoft journals

trustworthy repository infrastructure
Trustworthy repository infrastructure
  • Making data available is the primary mission of the organization
    • No pay-walls or restrictive licenses (all released under CCZero)
    • The same data may be hosted by other services (non-exclusivity)
  • Built on the DSpace repository platform, an open source framework used by hundreds of institutional repositories
  • Multiple machine and human interfaces for discovery and access
    • Dublin Core metadata, harvestable through OAI-PMH
    • DOIs registered through DataCite
    • Curators add metadata to enhance keyword searching
  • Assurance of data integrity and permanent availability
    • Service mirroring and backup
    • File migration and bit-level integrity assurance
    • Organizational failover through DataONE and CLOCKSS

dryad as an organization
Dryad as an organization
  • Governed by an interim Board 2009- 2011.
  • Now a nonprofit organization incorporated in North Carolina, USA.
  • Membership open to all stakeholder organizations, including scientific societies, publishers, funding agencies, universities & institutes.
  • Governed by an elected 12-member Board of Directors
    • Nominated and elected by the Membership
  • First Annual membership meeting 24 May 2013 in Oxford.

dryad s business plan
Dryad’s business plan
  • Deposit fees are the primary source of revenue, for several reasons:
    • The time of deposit is when the majority of costs are incurred
    • Revenue scales with costs (i.e. volume of deposits)
    • The costs are distributed both fairly and widely
    • This enables Dryad to make access to the data free in perpetuity
  • Membership fees will cover costs of annual membership meetings
  • Project grants will supplement the operational budget for R&D activities

payment plans
Payment plans

1 Up to a fixed deposit size (currently 10GB). Additional charges for larger deposits.

to learn more
To learn more
  • Repository home:
  • News:
  • Project documentation:
  • Twitter: @datadryad
  • Code:

or contact us: