Content Provider
Arctic Data Center (via DataONE)
243
Frontiers: Figshare
213
NOAA NCEI Environmental Data Archive (via DataONE)
195
DataCite Metadata Store (German National Library of Science and Technology)
170
PANGAEA - Data Publisher for Earth & Environmental Science
122
Defense Technical Information Center: DTIC Technical Reports database
79
Springer Nature (via Crossref)
78
Unknown
55
University of Tromsø: Munin Open Research Archive
50
Directory of Open Access Journals: DOAJ Articles
41
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
17
Ghent University Academic Bibliography
17
Purdue University: e-Pubs
17
Norwegian Polar Data Centre
15
Research Workspace (via DataONE)
15
Research Data Australia (Australian National Data Service - ANDS)
14
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
13
University of California: eScholarship
13
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
12
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
12
University of Calgary Journal Hosting
12
PubMed Central (PMC)
11
Informa (via Crossref)
9
KovsieScholar Repository (University of the Free State - UFS UV)
9
eCite UTAS (University of Tasmania)
9
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
8
HELDA – University of Helsinki Open Repository
8
Old Dominion University: ODU Digital Commons
8
The University of Southern Mississippi: The Aquila Digital Community
8
University of South Carolina Libraries: Scholar Commons
8
National Institute of Polar Research Repository, Japan
7
Utrecht University Repository
7
W&M ScholarWorks
7
Digital.CSIC (Spanish National Research Council)
6
Institute for Marine Research: Brage IMR
6
Lund University Publications (LUP)
6
University of North Texas: UNT Digital Library
6
University of St Andrews: Digital Research Repository
6
ASM Journals (American Society for Microbiology - via Crossref)
5
Canadian Science Publishing (via Crossref)
5
Nova Southeastern University: NSU Works
5
University of Bergen: Bergen Open Research Archive (BORA-UiB)
5
Université de Nantes: HAL-UNIV-NANTES
5
Xiamen University Institutional Repository
5
Griffith University: Griffith Research Online
4
HAL Sorbonne Université
4
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
4
Institut national des sciences de l'Univers: HAL-INSU
4
Knowledge Network for Biocomplexity (via DataONE)
4
Norsk Polarinstitutt: Brage NP
4
more ...