IMAS Metadata Catalogue
Environmental data for layers for baseline Antarctic seafloor biodiversity predictions
This dataset compiles spatial environmental data layers from various sources used for predicting distributional patterns of Antarctic seafloor biodiversity (Jansen et al, in prep). All data layers are projected to polar stereographic (EPSG:3031) at a resolution of 2km.
Data layers include seafloor depth, slope and topographic position index, distance to the nearest underwater canyon head, ocean surface net primary productivity, seafloor water current speeds, temperature and salinity, and modelled availability of ocean surface-derived food at the seafloor.
Simple
Identification info
- Date (Publication)
- 2025-09-22T00:00:00
Identifier
- Title
- Information and documentation - Digital object identifier system
- Citation identifier
- ISO 26324:2012
- Code
- 10.25959/QPQM-WS26
- Codespace
- doi.org
- Description
- Digital Object Identifier (DOI)
Resource provider
Principal investigator
Collaborator
Collaborator
- Status
- Completed
Author
Extent
N
S
E
W
))
Temporal extent
- Time period
- 2002-01-01 2025-10-01
Vertical element
- Minimum value
- 0
- Maximum value
- 2500
- Identifier
- EPSG::5715
- Name
- MSL depth
- Maintenance and update frequency
- Not planned
- Global Change Master Directory Earth Science Keywords, Version 8.5
Resource constraints
- Other constraints
- This dataset is the intellectual property of the University of Tasmania (UTAS) through the Institute for Marine and Antarctic Studies (IMAS).
Resource constraints
- Linkage
-
https://licensebuttons.net/l/by/4.0/88x31.png
License Graphic
- Title
- Creative Commons Attribution 4.0 International License
- Alternate title
- CC-BY
- Edition
- 4.0
- Website
-
https://creativecommons.org/licenses/by/4.0/
License Text
- Other constraints
- Cite data as: Jansen, J., Boeira Dias, F., & Gros, C. (2025). Environmental data for layers for baseline Antarctic seafloor biodiversity predictions [Data set]. Institute for Marine and Antarctic Studies. https://doi.org/10.25959/QPQM-WS26
- Language
- English
- Character encoding
- UTF8
- Credit
- Australian Research Council Discovery Project DP190101858. This research was also supported by the Australian Research Council Special Research Initiative, Australian Centre for Excellence in Antarctic Science (ACEAS) (Project Number SR200100008).
Distribution Information
Resource lineage
- Statement
- Bathymetric variables, derived from the International Chart of the Southern Ocean (IBCSO), include depth, slope and topographic position index. Water properties, obtained from Boeira-Dias et al. (2023, Front. Mar. Sci.), include mean seafloor current speed, residual seafloor current speed (tidal component), seafloor salinity, seafloor temperature. Mean net primary productivity, based on CAFE model (Silsbe et al. 2016, Glob. Biogeochem. Cycles), is a climatology from years 2002-2020 for the months October to March. Seafloor food-availability, based on a purpose-built food-availability model described in Jansen et al (in prep), shows results from simulations that track the vertical and horizontal movement of particles during the redistribution of export primary productivity to their final destinations on the seafloor. log(horizontal particle flux) is the horizontal movement of particles along the seafloor and mean sedimentation the total number of particles settling in each location. Distance to canyons is the distance to the nearest underwater canyon head based on “Geomorphic features of the Antarctic margin and Southern Ocean 2012” (http://dx.doi.org/10.4225/25/5b289b3bc07af), which is a refined version of Post et al. (2014, Biogeographic Atlas of the Southern Ocean).
- Hierarchy level
- Dataset
- Hierarchy level
- Dataset
Metadata
- Metadata identifier
- urn:uuid/644b71cb-f704-496d-94f7-7c8742e0975c
- Language
- English
- Character encoding
- UTF8
Type of resource
- Resource scope
- Dataset
- Name
- IMAS Dataset level record
- Metadata linkage
-
https://metadata.imas.utas.edu.au/geonetwork/srv/eng/catalog.search#/metadata/644b71cb-f704-496d-94f7-7c8742e0975c
Point of truth URL of this metadata record
- Date info (Creation)
- 2025-09-22T00:00:00
- Date info (Revision)
- 2025-10-17T16:52:49
Metadata standard
- Title
- ISO 19115-3:2018
Overviews
Spatial extent
N
S
E
W
Provided by
Associated resources
Not available