National Zoological Park

National Zoological Park

The National Zoological Park, commonly known as the National Zoo, is one of the oldest zoos in the United States. The zoo is part of the Smithsonian Institution and does not charge admission. Derived from Wikipedia licensed CC-BY-SA.

Open Access statistics for National Zoological Park, United States, covering academic research published from 2000 to 2024. Read More.


Open Access Percentage

52%


Total
Publications

2.7K


Total Open
Publications

1.4K


Total
Citations

126K


Open Access
Percentage

52%


Total
Publications

2.7K


Total Open
Publications

1.4K


Total
Citations

126K

Wikipedia

Website

download

Breakdown

21% 23% 7% 49%

Publisher Open

21%

Both

23%

Other Platform Open

7%

Closed

49%

Percentage of Open Access over time

0%10%20%30%40%50%60%70%80%90%100%
2000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024

Publisher Open

Both

Other Platform Open

Closed

Volume of Open Access over time

020406080100120140160180200Total Publications
2000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024

Open

Closed

Publisher Open

55%OA Journal

OA Journal 55%

647

Hybrid 15%

179

No Guarantees 30%

347

Other Platform Open

Domain 59%

501

Institution 34%

288

Other Internet 26%

217

Public 9%

80

Preprint 8%

69

Other Platform Locations

Name

Platform Type

Publications

PubMed Central
Domain
497
DOI
Other Internet
193
Figshare
Public
68
bioRxiv
Preprint
56
Europe PMC
Domain
46
Consejo Superior de Investigaciones Científicas
Institution
38
King's College London
Institution
34
Unknown Repository
Other Internet
32
Royal Netherlands Academy of Arts and Sciences
Institution
28
Office of Scientific and Technical Information
Institution
27
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Data updated 18 August 2025

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