Dataset

The Biodiversity of Ice-free Antarctica Database

Antarctic OBIS Open in mapper Explore occurrences

Antarctica is one of Earth’s most untouched, inhospitable, and poorly-known regions. Although knowledge of its biodiversity has increased over recent decades, a diverse, wide-ranging and spatially explicit compilation of the biodiversity that inhabits Antarctica’s permanently ice-free areas is unavailable. This absence hinders both Antarctic biodiversity research and the integration of Antarctica in global biodiversity-related studies. Fundamental and applied research on biodiversity patterns, ecological structure and function, and options for conservation are reliant on spatially-resolved, taxonomically-consistent observations. Such information is especially important for modern, data-driven biodiversity science, both in Antarctica and globally, and forms the backbone of biodiversity informatics, reflected for example in the Darwin Core Standard used by the Global Biodiversity Information Facility. Biodiversity data are also essential to fulfil the conservation requirements for Antarctica, as set out in the Protocol on Environmental Protection to the Antarctic Treaty and inform the design of systematic surveys to address biodiversity and ecological knowledge gaps, for both specific taxa and ecosystems. Such surveys are key requirements for understanding and mitigating the impacts of environmental change on the region’s biodiversity. Here, we address these requirements through the public release of The Biodiversity of Ice-free Antarctica Database. In 2008, we extracted a subset of biodiversity records only from terrestrial ice-free areas, from the Scientific Committee on Antarctic Research (SCAR) Antarctic Biodiversity Database. We have subsequently added thousands of records from a range of sources; checking, and where necessary (and possible), correcting the spatial location, clarifying, cross-referencing and harmonizing taxonomy with globally-recognized sources, and documenting the original source of records. The Biodiversity of Ice-free Antarctica Database spans the early 1800s to 2019 (with most records collected after 1950) and represents the most comprehensive consolidation of Antarctic ice-free biodiversity occurrence data yet compiled into a single database. The Biodiversity of Ice-free Antarctica Database contains 35,654 records of 1,890 species in over 800 genera across six kingdoms and spans all Antarctic Conservation Biogeographic Regions.Detailed metadata can be found in the Supplementary Materials of: Terauds, A., Lee, J.R., Wauchope, H., Raymond, B., Bergstrom, D.M., Convey, P., Mason, C., Patterson, C.R., Robinson, S.A, Van de Putte, A., Watts, D. and Chown, S.L. (2025) The Biodiversity of Ice-free Antarctica Database. Ecology. https://doi.org/10.1002/ecy.70000

Citation: Terauds A (2025). The Biodiversity of Ice-free Antarctica Database. Version 1.3. Antarctic Biodiversity Information Facility (ANTABIF). Occurrence dataset. http://dx.doi.org/doi:10.4225/15/59100ba9157f7

Published: March 21, 2025 at 05:55

License: This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License

URL: https://ipt.biodiversity.aq/resource?r=aas_4296_biodiversity_icefree_antarctica_db

Contacts:

35,654
occurrence records
942
taxa
625
species

Taxa

Missing and invalid fields

Field Missing Invalid
coordinateUncertaintyInMeters 27,730
77.8%
eventDate 6,272 1
17.6%
maximumDepthInMeters 35,654
100.0%
minimumDepthInMeters 35,654
100.0%
scientificNameID 32,777 2,877
100.0%

Quality flags

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

Flag Dropped Records
NO_DEPTH 35,654
100.0%
ON_LAND 29,544
82.9%
MARINE_UNSURE 9,266
26.0%
NOT_MARINE 7,292
20.5%
NO_MATCH 5,791
16.2%
NO_ACCEPTED_NAME 285
0.8%
WORMS_ANNOTATION_RESOLVABLE 11
0.0%

Measurement types

DNA derived data