TemperateReefBase Geonetwork Catalogue
Vulnerability of shallow Antarctic invertebrate-dominated ecosystems
Human impacts threaten not only species, but also entire ecosystems. Ecosystems under stress can collapse or transition into different states, potentially reducing biodiversity at a variety of scales. Here we examine the vulnerability of shallow invertebrate-dominated ecosystems on polar seabeds, which may be threatened for several reasons. These unique communities consist of dark-adapted animals that rely on almost year-round sea-ice cover to create low-light shallow marine environments. Climate change is likely to cause early sea-ice break-out in some parts of Antarctica, which will dramatically increase the amount of light reaching the seabed. This will potentially result in ecological regime shifts, where invertebrate-dominated communities are replaced by macroalgal beds. Habitat for these endemic invertebrate ecosystems is globally rare, and the fragmented nature of their distribution along Antarctic coast increases their sensitivity to change. At the same time, human activities in Antarctica are concentrated in areas where these habitats occur, compounding potential impacts. While there are clear mechanisms for these threats, lack of knowledge about the current spatial distribution of these ecosystems makes it difficult to predict the extent of ecosystem loss, and the potential for recovery. In this paper we describe shallow ice-covered ecosystems, their association with the environment, and the reasons for their vulnerability. We estimate their spatial distribution around Antarctica using sea-ice and bathymetric data, and apply the IUCN Red List of Ecosystems criteria to formally assess their vulnerability. We conclude that shallow ice-covered ecosystems should be considered near threatened to vulnerable in places, although the magnitude of risk is spatially variable.
This dataset comprises two files. Both are provided in netCDF format in polar stereographic project (see nc file for projection details).
light_budget_6km.nc : this gives the estimated annual light budget (in mol photons/m^2/year) at the surface of the water column, having been adjusted for sea ice cover (see paper for details). This is calculated on the 6.25km grid associated with the sea ice concentration data.
benthic_light_500m.nc : this gives the estimated annual light budget (in mol photons/m^2/year) at the sea floor, having been further adjusted for water depth. It is provided on a 500m grid (as per the IBCSO bathymetry used). Areas deeper than 200m are given no-data values, and areas outside of the coverage of the sea ice grid are assigned a value of -999. See paper for details.
Simple
Identification info
- Alternate title
- Vulnerability of shallow Antarctic invertebrate-dominated ecosystems
- Date (Publication)
- 2015-02-28
- Edition
- 1
- Citation identifier
-
Dataset DOI
- Title
- Information and documentation - Digital object identifier system
- Date (Publication)
- 2012-04-23
- Citation identifier
- ISO 26324:2012
- Citation identifier
- doi:10.4225/15/54975848E97E1
Originator
Publisher
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Collaborator
- Name
- CAASM Metadata
- Status
- Completed
Custodian
- Topic category
-
- Biota
- Environment
- Oceans
Extent
))
Extent
- Description
- Temporal Coverage
Temporal extent
- TimePeriod
- 2002-10-01 2011-03-31
- Title
- Vulnerability of Antarctic shallow invertebrate-dominated ecosystems
- Date (Publication)
- 2015
- Citation identifier
- 40
- Citation identifier
- doi: 10.1111/aec.12237
Author
- Name
- Austral Ecology
- Page
- 482-491
- NASA/GCMD Earth Science Keywords
-
- EARTH SCIENCE > OCEANS > SEA ICE > ICE GROWTH/MELT
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > CNIDARIANS > HYDROZOANS
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > BRYOZOANS/MOSS ANIMALS
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ECHINODERMS
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ECHINODERMS > SEA URCHINS
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > AMPHIPODS
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > ISOPODS
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CRUSTACEANS > OSTRACODS
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > MOLLUSKS > BIVALVES
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES
- EARTH SCIENCE > CRYOSPHERE > SEA ICE > ICE GROWTH/MELT
- EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > COMMUNITY DYNAMICS > COMMUNITY STRUCTURE
- EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > BENTHIC
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > PLANTS > MACROALGAE (SEAWEEDS)
- Keywords
-
- Vulnerability
- Invertebrates
- Shallow
- Ecosystems
- NASA/GCMD Earth Science Keywords
-
- AMD
- AMD/AU
- CEOS
- NASA/GCMD Earth Science Keywords
-
- CONTINENT > ANTARCTICA
- OCEAN > SOUTHERN OCEAN
- GEOGRAPHIC REGION > POLAR
Resource constraints
- Use limitation
- This metadata record is publicly available.
Resource constraints
- Access constraints
- licence
- Other constraints
- These data are publicly available for download from the provided URL.
Resource constraints
- File type
- Portable Network Graphic
- Title
- Attribution 4.0 International (CC BY 4.0)
- Website
-
https://creativecommons.org/licenses/by/4.0/legalcode
Legal code for Creative Commons by Attribution 4.0 International license
- Use constraints
- licence
- Other constraints
- This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). When citing this dataset, please cite the referenced publication: Clark, G. F., Raymond, B., Riddle, M. J., Stark, J. S. and Johnston, E. L. (2015), Vulnerability of Antarctic shallow invertebrate-dominated ecosystems. Austral Ecology, 40: 482-491. doi: 10.1111/aec.12237
- Language
- English
- Character encoding
- UTF8
Distribution Information
Distributor
Distributor
Distributor
- Fees
- Free
- Planned available datetime
- 2015-02-28T00:00:00
- Units of distribution
- MB
- Transfer size
- 4
- Distribution format
-
- NetCDF
- OnLine resource
-
GET DATA
Download the data
- OnLine resource
-
PROJECT HOME PAGE
Public information for ASAC project 2201
- OnLine resource
-
VIEW RELATED INFORMATION
Citation reference for this metadata record and dataset
Resource lineage
- Statement
- We applied the IUCN Red List criteria for ecosystems version 2.0 to assess the conservation status of these ecosystems. The extent of potential sessile macroinvertebrate habitat around Antarctica was estimated using circum-Antarctic bathymetric and sea-ice concentration data. These results were then merged projected onto with the bathymetric griddata (i.e. to a spatial resolution of 500m) and merged with the depth data. We extracted occurrence data from the database 'Antarctic macrobenthic communities: a compilation of circumpolar information'. For more information see the final publication.
- Hierarchy level
- Dataset
- Maintenance and update frequency
- As needed
- Maintenance note
- 2014-12-18 - record created by Dave Connell from information provided by Ben Raymond. 2016-03-16 - record updated by Dave Connell to alter access constraints and update publication information. 2017-08-17 - record updated by Dave Connell - basic updates.
Metadata
- Metadata identifier
- string/ASAC_2201_vulnerability
- Language
- English
- Character encoding
- UTF8
Author
Sponsor
Owner
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- 376d17a0-25fd-4b57-905b-367275c4f8c6
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Date (Last Revision)
- 2015-11-30T04:51:15
Identifier
- Description
- metadata.extraction_date
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- 8.6
- Metadata linkage
-
http://data.aad.gov.au/metadata/records/ASAC_2201_vulnerability
Point of truth for the metadata record
- Date info (Creation)
- 2014-12-18T00:00:00
- Date info (Last Update)
- 2017-08-17
Metadata standard
- Title
- ISO 19115-3
- Edition
- 2014
- Other citation details
- Version 1
- Title
- DIF to ISO 19115-1 Profile
Overviews
Spatial extent
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