Atlantic Equatorial Fracture Zone - Ocean Biodiversity Information System

Atlantic Equatorial Fracture Zone

Statistics

Occurrence records	97,132
Species level	80,994
Species	1,624
Taxa	2,774
Datasets	101
Time range	1849 - 2024

Data quality

Dropped records

Dropped records	0
Not marine	114
No WoRMS match	3,683
No coordinates	0
Zero coordinates	0

Taxonomic issues

Marine unsure	1,124
No accepted name available	1,081

Missing and invalid fields

Field	Missing	Invalid
coordinateUncertaintyInMeters	109,530	205
eventDate	41,068	0
maximumDepthInMeters	87,312	70
minimumDepthInMeters	71,425	70
occurrenceStatus	22,300	0
scientificName	3,799	0
scientificNameID	4,610	1,669

Spatial issues

Records on land	0
More than 20 km from shore	0
Depth exceeds bathymetric depth	14

Top datasets

Dataset	Records
Ecoscope tuna observer data Published 2025-03-20	22,919
Ecoscope tuna bycatch observer data Published 2025-03-20	14,592
World Ocean Database 2009 Published 2020-11-17	9,712
PANGAEA - Data from various sources Published 2025-03-20	8,545
Long-term Ecological Monitoring Research Brazilian Oceanic Islands (reef fish) Published 2022-02-02	7,623
MICROBIS Database (version 1) - European data Published	6,657
PANGAEA - Data from University Bremen Published 2025-03-20	4,142
ReefSYN \| Standardized datasets of Brazilian reef diversity in space and time - Dataset I: Fish communities from the Brazilian province Published 2024-07-03	3,617
PANGAEA - Data from South Atlantic in the late Quaternary: reconstruction of budget and currents Published 2025-03-20	3,000
PANGAEA - Data from the Ocean Drilling Program (ODP) Published 2025-03-20	2,210

Distribution

Disclaimer: EEZ boundaries based on Marine Regions (no endorsement).

Records

Composition

detailed (class) simple

Top taxa

Unique species IUCN Red List All taxa Unique species IUCN Red List All taxa Unique species IUCN Red List All taxa

Scientific name	Records
Katsuwonus pelamis (Linnaeus, 1758) Phylum Chordata > Class Teleostei	9,319
Thunnus obesus (Lowe, 1839) VU Phylum Chordata > Class Teleostei	6,453
Thunnus albacares (Bonnaterre, 1788) Phylum Chordata > Class Teleostei	6,124
Acanthocybium solandri (Cuvier, 1832) Phylum Chordata > Class Teleostei	2,077
Canthidermis maculata (Bloch, 1786) Phylum Chordata > Class Teleostei	2,074
Coryphaena hippurus Linnaeus, 1758 Phylum Chordata > Class Teleostei	1,802
Globigerinoides ruber (d'Orbigny, 1839) Phylum Foraminifera > Class Globothalamea	1,716
Stegastes rocasensis (Emery, 1972) Phylum Chordata > Class Teleostei	1,671
Elagatis bipinnulata (Quoy & Gaimard, 1825) Phylum Chordata > Class Teleostei	1,647
Halichoeres radiatus (Linnaeus, 1758) Phylum Chordata > Class Teleostei	1,364

Newest species

Scientific name	Records	Since
Stenella longirostris (Gray, 1828) Phylum Chordata > Class Mammalia	2	2019
Thalassoma noronhanum (Boulenger, 1890) Phylum Chordata > Class Teleostei	4	2019
Azurina multilineata (Guichenot, 1853) Phylum Chordata > Class Teleostei	113	2018
Oithona hebes Giesbrecht, 1891 Phylum Arthropoda > Class Copepoda	2	2017
Diodon holocanthus Linnaeus, 1758 Phylum Chordata > Class Teleostei	1	2017
Dictyocysta lepida Ehrenberg, 1854 Phylum Ciliophora > Class Oligotrichea	1	2017
Sparisoma amplum (Ranzani, 1841) Phylum Chordata > Class Teleostei	1	2017
Acartia (Odontacartia) lilljeborgii Giesbrecht, 1889 Phylum Arthropoda > Class Copepoda	1	2017
Tintinnopsis tocantinensis Kofoid & Campbell, 1929 Phylum Ciliophora > Class Oligotrichea	2	2017
Tosanoides aphrodite Pinheiro, Rocha & Rocha, 2018 Phylum Chordata > Class Teleostei	2	2017

Data providers

Name	Records
Institut de Recherche pour le Développement	38,031
Vlaams Instituut voor de Zee	21,158
Universidade Federal de São Paulo, Campus Sao Paolo	12,092
Universidade Federal de Santa Catarina	12,020
Universidade Estadual do Norte Fluminense Darcy Ribeiro	12,020
National Oceanic and Atmospheric Administration, Washington	9,793
U.S. Geological Survey HQ	9,793
Intergovernmental Oceanographic Commission of UNESCO	8,310
Woods Hole Oceanographic Institution	6,657
University of Bremen	4,142