Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
2,102
NOAA NCEI Environmental Data Archive (via DataONE)
662
Unknown
166
Directory of Open Access Journals: DOAJ Articles
112
PANGAEA - Data Publisher for Earth & Environmental Science
99
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
63
Arctic Data Center (via DataONE)
57
Copernicus Publications: E-Journals
57
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
49
Université de Nantes: HAL-UNIV-NANTES
38
Natural Environment Research Council: NERC Open Research Archive
36
PubMed Central (PMC)
34
Digital.CSIC (Spanish National Research Council)
33
Niedersächsisches Online-Archiv NOA
33
Aarhus University: Research
32
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
29
University of Southampton: e-Prints Soton
28
Institut national des sciences de l'Univers: HAL-INSU
24
Instituto Español de Oceanografía: e-IEO
22
University of Bergen: Bergen Open Research Archive (BORA-UiB)
21
LeibnizOpen (The Leibniz Association)
19
University of Tromsø: Munin Open Research Archive
19
Wiley Online Library
18
Defense Technical Information Center: DTIC Technical Reports database
16
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
15
Max Planck Society: MPG.PuRe
13
University of Copenhagen: Research
13
University of East Anglia: UEA Digital Repository
13
Polar Research (E-Journal)
12
University of California: eScholarship
12
Frontiers: Figshare
11
The Royal Society: Figshare
11
Cambridge University Press
10
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
9
ETH Zürich Research Collection
9
University College London: UCL Discovery
9
University of Calgary Journal Hosting
9
Utrecht University Repository
9
Dryad Digital Repository (Duke University)
8
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
8
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
8
Institute for Marine Research: Brage IMR
8
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
8
Springer Nature (via Crossref)
8
Technical University of Denmark: DTU Orbit
8
University of Lincoln: Lincoln Repository
8
Université de Bretagne Occidentale: HAL
8
HighWire Press (Stanford University)
7
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
7
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
7
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