Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
86,084
Arctic Data Center (via DataONE)
12,763
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
6,609
Arctic Institute of North America
4,889
Zenodo
4,598
Unknown
3,899
David Rumsey Historical Map Collection (Cartography Associates)
2,687
Springer Nature
2,633
Informa (via Crossref)
2,098
Springer Nature (via Crossref)
1,998
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
1,934
CyberLeninka (Scientific Electronic Library)
1,746
NOAA NCEI Environmental Data Archive (via DataONE)
1,701
IOP Publishing
1,521
Cambridge University Press
1,417
Dryad Digital Repository (Duke University)
1,382
RePEc (Research Papers in Economics)
1,325
Frontiers: Figshare
1,210
JSTOR (via Crossref)
1,078
NASA Technical Reports Server (NTRS)
1,047
University of Washington, Seattle: Digital Collections
1,021
University of Michigan: Digital Collections
909
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
855
University of California: eScholarship
853
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
836
Frontiers (Publisher)
776
Informa
735
IEEE Publications (via Crossref)
628
JSTOR
593
Wiley Online Library
591
USGS Science Data Catalog (via DataONE)
548
Natural Environment Research Council: NERC Open Research Archive
500
Beloit College Digital Collections
484
Biodiversity Heritage Library (BHL)
466
Brill
466
Oxford University Press (via Crossref)
466
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
451
ArXiv.org (Cornell University Library)
397
Brill (via Crossref)
395
University of New Hampshire: Scholars Repository
366
ScienceDirect (Elsevier)
356
University of Toronto Press (U Toronto Press - via Crossref)
350
Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE)
331
De Gruyter
326
University of Alaska: ScholarWorks@UA
325
University of Nebraska-Lincoln: DigitalCommons@UNL
323
Arctic Council Repository
322
University of Michigan: Deep Blue
291
ScienceDirect (Elsevier - via Crossref)
287
AIP Publishing
286
more ...