Oceans Past Initiative

Open in mapper Explore occurrences

The Oceans Past Initiative (OPI) is a global research network for marine historical research. Our goal is to enhance knowledge and understanding of how the diversity, distribution and abundance of marine life in the world’s oceans has changed over the long term to better indicate future changes and possibilities. OPI welcomes anyone interested in the history of humankind’s interactions with life in the oceans including paleo-ecologists and climatologists, archaeologists, marine environmental historians, economic historians, oral historians, historical ecologists, fisheries historians, and marine environmental and fisheries policy makers and managers.

John Nicholls
john.nicholls@tcd.ie

338,518
occurrence records
669
taxa
534
species
42
datasets

Datasets

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 289,920
85.6%
decimalLatitude 3
0.0%
decimalLongitude 3
0.0%
eventDate 8,149
2.4%
maximumDepthInMeters 236,250
69.8%
minimumDepthInMeters 236,250
69.8%
scientificNameID 1,513 9
0.4%

Quality flags

The OBIS data quality flags are documented at https://github.com/iobis/obis-qc.

Flag Dropped Records
NO_DEPTH 236,250
69.8%
ON_LAND 30,062
8.9%
DEPTH_EXCEEDS_BATH 4,493
1.3%
NO_MATCH 1,522
0.4%
WORMS_ANNOTATION_REJECT_AMBIGUOUS 1,462
0.4%
NO_ACCEPTED_NAME 68
0.0%
NO_COORD 3
0.0%