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

124K


Open Access
Percentage

52%


Total
Publications

2.7K


Total Open
Publications

1.4K


Total
Citations

124K

Wikipedia

Website

download

Breakdown

21% 23% 6% 50%

Publisher Open

21%

Both

23%

Other Platform Open

6%

Closed

50%

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%

640

Hybrid 15%

176

No Guarantees 30%

358

Other Platform Open

Domain 65%

521

Institution 38%

304

Other Internet 22%

177

Public 9%

74

Preprint 2%

16

Other Platform Locations

Name

Platform Type

Publications

PubMed Central
Domain
520
DOI
Other Internet
155
Figshare
Public
63
Europe PMC
Domain
45
Spanish National Research Council (CSIC - DIGITAL.CSIC)
Institution
39
Elsevier - Scopus
Institution
34
DANS - Data Archiving and Networked Services
Institution
29
U.S. Department of Energy Office of Scientific and Technical Information - OSTI OAI
Institution
27
Unknown Repository
Other Internet
26
Le Centre pour la Communication Scientifique Directe - HAL - Diderot
Institution
26
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Data updated 18 August 2025

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