Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
289
Natural Environment Research Council: NERC Open Research Archive
11
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
8
PANGAEA - Data Publisher for Earth & Environmental Science
7
Digital.CSIC (Spanish National Research Council)
6
NOAA NCEI Environmental Data Archive (via DataONE)
6
Unknown
6
Zenodo
6
Copernicus Publications: E-Journals
5
Directory of Open Access Journals: DOAJ Articles
5
University of East Anglia: UEA Digital Repository
5
University of Groningen research database
5
University of Southampton: e-Prints Soton
5
KU Leuven: Lirias
4
Niedersächsisches Online-Archiv NOA
4
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
3
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
2
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
2
MDPI Open Access Publishing
2
Texas A&M University Digital Repository
2
University of California: eScholarship
2
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
2
Aarhus University: Research
1
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
1
Digital Commons University of South Florida (USF)
1
ETH Zürich Research Collection
1
Ghent University Academic Bibliography
1
Institut national des sciences de l'Univers: HAL-INSU
1
NIOZ Repository (Royal Netherlands Institute for Sea Research)
1
OSKAR Bordeaux (Open Science Knowledge ARchive)
1
The Czech Academy of Sciences: Publication Activity (ASEP)
1
The University of Adelaide: Digital Library
1
University College London: UCL Discovery
1
University of South Florida St. Petersburg: Digital USFSP
1
University of the Highlands and Islands: Research Database of UHI
1
Université de Nantes: HAL-UNIV-NANTES
1
Utrecht University Repository
1
Wageningen UR (University & Research Centre): Digital Library
1