TemperateReefBase Geonetwork Catalogue
Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider
Metadata record for data collected as part of Australian Antarctic Science project 3010 in the Australian Antarctic program.
From the abstract of the referenced paper:
The evolutionary history of Antarctic organisms is becoming increasingly important to understand and manage population trajectories under rapid environmental change. The Antarctic sea spider Nymphon australe, with an apparently large population size compared with other sea spider species, is an ideal target to look for molecular signatures of past climatic events. We analysed mitochondrial DNA of specimens collected from the Antarctic continent and two Antarctic islands (AI) to infer past population processes and understand current genetic structure. Demographic history analyses suggest populations survived in refugia during the Last Glacial Maximum. The high genetic diversity found in the Antarctic Peninsula and East Antarctic (EA) seems related to multiple demographic contraction-expansion events associated with deep-sea refugia, while the low genetic diversity in the Weddell Sea points to a more recent expansion from a shelf refugium. We suggest the genetic structure of N. australe from AI reflects recent colonization from the continent. At a local level, EA populations reveal generally low genetic differentiation, geographically and bathymetrically, suggesting limited restrictions to dispersal. Results highlight regional differences in demographic histories and how these relate to the variation in intensity of glaciation-deglaciation events around Antarctica, critical for the study of local evolutionary processes. These are valuable data for understanding the remarkable success of Antarctic pycnogonids, and how environmental changes have shaped the evolution and diversification of Southern Ocean benthic biodiversity.
Simple
Identification info
- Alternate title
- Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider
- Date (Publication)
- 2017-11-01
- 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:10.4225/15/59f94249b11ef
Originator
Publisher
Principal investigator
Principal investigator
Principal investigator
Principal investigator
Collaborator
Collaborator
Collaborator
Collaborator
- Name
- CAASM Metadata
- Status
- Completed
Custodian
- Topic category
-
- Biota
- Oceans
Extent
))
Extent
- Description
- Temporal Coverage
Temporal extent
- TimePeriod
- 2007-01-01 2011-12-31
- Title
- Genetic signature of Last Glacial Maximum regional refugia in a circum-Antarctic sea spider
- Date (Publication)
- 2017
- Citation identifier
- DOI: 10.1098/rsos.170615
Author
- Name
- Royal Society Open Science
- NASA/GCMD Earth Science Keywords
-
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/INVERTEBRATES > ARTHROPODS > CHELICERATES
- EARTH SCIENCE > CLIMATE INDICATORS > PALEOCLIMATE INDICATORS > BIOLOGICAL RECORDS
- EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS
- Keywords
-
- NYMPHON AUSTRALE
- PYCNOGONIDS
- SEA SPIDERS
- DNA
- GENETICS
- NASA/GCMD Earth Science Keywords
-
- FIELD INVESTIGATION
- FIELD SURVEYS
- NASA/GCMD Earth Science Keywords
-
- AMD/AU
- AMD
- CEOS
- NASA/GCMD Earth Science Keywords
-
- GEOGRAPHIC REGION > POLAR
- OCEAN > SOUTHERN OCEAN
- OCEAN > SOUTHERN OCEAN > ROSS SEA
- CONTINENT > ANTARCTICA
- OCEAN > SOUTHERN OCEAN > WEDDELL SEA
- OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > SOUTH SANDWICH ISLANDS
- OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > BOUVET ISLAND
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/). Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AAS_3010_Sea_Spiders_Genetics when using these data.
- Language
- English
- Character encoding
- UTF8
Distribution Information
Distributor
Distributor
Distributor
- Fees
- Free
- Planned available datetime
- 2017-11-01T00:00:00
- Units of distribution
- kb
- Transfer size
- 415
- Distribution format
-
- Excel, PDF, FASTA
- OnLine resource
-
GET DATA
Download point for the data
- OnLine resource
-
PROJECT HOME PAGE
Public information for AAS project AAS_3010
- OnLine resource
-
VIEW RELATED INFORMATION
Citation reference for this metadata record and dataset.
Resource lineage
- Statement
- See the publication for full details.
- Hierarchy level
- Dataset
- Maintenance and update frequency
- As needed
- Maintenance note
- 2017-11-01 - record created by Dave Connell at the request of Claudia Arango.
Metadata
- Metadata identifier
- string/AAS_3010_Sea_Spiders_Genetics
- Language
- English
- Character encoding
- UTF8
Author
Sponsor
Owner
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- f0685fe9-6d29-4425-af18-856f77cbc223
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Date (Last Revision)
- 2021-11-17T12:22:29
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/AAS_3010_Sea_Spiders_Genetics
Point of truth for the metadata record
- Date info (Creation)
- 2017-11-01T00:00:00
- Date info (Last Update)
- 2017-11-01
Metadata standard
- Title
- ISO 19115-3
- Edition
- 2014
- Other citation details
- Version 1
- Title
- DIF to ISO 19115-1 Profile
Overviews
Spatial extent
Provided by
