TemperateReefBase Geonetwork Catalogue
Winter Foraging Locations Of Southern Ocean Predators - sub-Antarctic islands
Metadata record for data expected from ASAC Project 2940 See the link below for public details on this project.
Public:
The extent of Antarctic winter sea-ice influences all aspects of the Antarctic marine food-web. We will use natural variations in inter-annual ice extent, to assess how a key component of that ecosystem, the predators, use the sea ice zone. Core foraging areas and dietary signals for a key Antarctic predator (Antarctic fur seal) will be identified. We will use newly developed, technology to track the animals, and stable isotopes to examine tropic linkages. Combined with satellite-derived sea-ice data, this will lead to the development of a model to predict how changing sea-ice patterns will influence Antarctic marine predator communities.
Project Objectives:
1. Use large samples of newly-developed (and tested) animal-borne miniature geolocating light level recorders to population level information on the spatial extent of movements of Antarctic fur seals, thereby quantifying the extent of the use of the winter pack-ice and associated waters by these abundant predators.
2. To quantify how changes in winter ice extent influence the location of core foraging areas for this species.
3. To develop models to investigate how changing ice conditions in the future will influence the movements of this species and to examine a range of climate-change scenarios.
Taken from the 2007-2008 Progress Report:
No field work was conducted at Macquarie Island in the last 12 months. This was due to the decision by the state government to not issue permits for the work.
With the help of our colleagues from BAS we did however manage to deploy 20 GLS light loggers on Antarctic fur seals at South Georgia.
Taken from the 2008-2009 Progress Report:
Objective 1 has been revised to the study of Antarctic fur seals only (see below). Research is progressing well with 78 animals tracked in 2008 and a further 80 expected in 2009.
Objectives 2 and 3 will follow once field data is available for both years (May 2010).
Isotopic analysis of blood and whisker samples for the 2008 season will commence in May 2009 once samples have been received.
Taken from the 2010-2011 Progress Report:
Public summary of the season progress:
This study has quantified the response of the Antarctic fur seal (Arctocephalus gazella) to inter-annual variation in oceanographic and winter ice conditions. We have measured the winter spatial foraging patterns of 66 adult females from three circum-Antarctic populations over two years (2008, 2009) during 114 trips to sea, while simultaneously recording in situ water temperature. Stable isotope analysis of fur seal blood and whisker samples indicates that adult females feed on a range of lower (krill) to higher (fish and squid) trophic levels across their winter range. Broad-scale habitat preferences across the range of the species indicate the importance of shelf, ice edge, frontal and oceanic and continental upwelling features in determining winter foraging movements.
Simple
Identification info
- Alternate title
- Winter Foraging Locations Of Southern Ocean Predators - sub-Antarctic islands
- Date (Publication)
- 2018-10-05
- 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:10.26179/5bb6ef4045b29
Originator
Publisher
Principal investigator
Principal investigator
Collaborator
Collaborator
- Name
- CAASM Metadata
- Status
- Completed
Custodian
- Topic category
-
- Biota
- Oceans
Extent
))
Extent
- Description
- Temporal Coverage
Temporal extent
- TimePeriod
- 2007-09-30 2011-03-31
- NASA/GCMD Earth Science Keywords
-
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS > PENGUINS
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES
- EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > ECOSYSTEM FUNCTIONS > FOOD-WEB DYNAMICS
- EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS
- EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > COASTAL
- EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > MARINE ECOSYSTEMS > PELAGIC
- EARTH SCIENCE > CRYOSPHERE > SEA ICE
- EARTH SCIENCE > OCEANS > SEA ICE
- EARTH SCIENCE > BIOSPHERE > ECOSYSTEMS > TERRESTRIAL ECOSYSTEMS > ISLANDS
- Keywords
-
- King Penguin
- Macaroni Penguin
- Antarctic Fur Seals
- GLS Light Logger
- Iles Kerguelen
- Foraging
- NASA/GCMD Earth Science Keywords
-
- GPS > Global Positioning System
- NASA/GCMD Earth Science Keywords
-
- FIELD SURVEYS
- FIELD INVESTIGATION
- LABORATORY
- NASA/GCMD Earth Science Keywords
-
- AMD/AU
- CEOS
- AMD
- NASA/GCMD Earth Science Keywords
-
- OCEAN > SOUTHERN OCEAN
- OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > SOUTH GEORGIA ISLAND
- OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND
- GEOGRAPHIC REGION > POLAR
Resource constraints
- Use limitation
- This metadata record is publicly available.
Resource constraints
- Access constraints
- licence
- Other constraints
- A compiled dataset of data from each of the child records is publicly available for download from the provided URL. See the child records for access to the raw, unmodified data.
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=ASAC_2940 when using these data.
- Language
- English
- Character encoding
- UTF8
Distribution Information
Distributor
Distributor
Distributor
- Fees
- Free
- Planned available datetime
- 2018-10-05T00:00:00
- Units of distribution
- kb
- Transfer size
- 2
- Distribution format
-
- csv
- OnLine resource
-
GET DATA
Download the data
- OnLine resource
-
PROJECT HOME PAGE
Public information for ASAC project 2940
- OnLine resource
-
VIEW RELATED INFORMATION
Citation reference for this metadata record and dataset
Resource lineage
- Statement
- Values provided in spatial and temporal coverage are approximate only. Taken from the 2008-2009 Progress Report: Variations to work plan or objectives: Since the original submission of the proposal the project has undergone a change of focus due to logistic constraints imposed by the vertebrate pest eradication plan at Macquarie Island. The revised project objectives now relate to the influences of climate and oceanographic variability including changes in sea-ice extent, on the winter foraging behaviour and habitat use of the Antarctic fur seal, a numerous component of the Antarctic foodweb. Research is being undertaken at three sites with the collaboration of UK, US and South African scientists. The changes necessitate a reduction in the power of predictions pertaining to Southern Ocean trophic models. However the project will provide much needed insight into the winter behaviour of one of Antarctica's most numerous marine predators. Field work: In 2007/8, 78 geolocation light loggers were deployed on adult Antarctic fur seals at three sub-Antarctic/Antarctic sites: South Georgia (n=30), Cape Shirreff (n=18) and Marion island (n=30). Blood and whisker samples were collected for each individual at deployment and on return to facilitate analysis of winter prey consumption. Laboratory activity/analysis: Currently whisker samples are being readied for isotopic analysis. 2018-10-05 The original datasheets (from the child records) were reformatted to fit IPT Biodiversity.AQ standard. The new datasheet "antarticFurSeals08_09.csv" provides the dataset ID, event date, decimal latitude, decimal longitude, continent, country, occurrence, basis of record, protocol and preparation. The organism quantity of parasites identified from host. The lowest taxonomical rank of the species identified that could be determined is provided, after matched in WoRMS (World Register of Marine Species). Its also contain the associated taxa, which is as a list of names of taxa and their associations with the occurrence (Host: species), and the associated reference.
- Hierarchy level
- Dataset
- Maintenance and update frequency
- As needed
- Maintenance note
- 2008-06-13 - record created by Dave Connell from the progress report submitted by Mark Hindell for project 2940. 2009-05-07 - record updated by Dave Connell from information provided in the progress report. 2012-02-07 - record updated by Dave Connell from information provided in the progress report. 2014-03-02 - record updated by Mary-Anne Lea. 2016-08-29 - record updated by Dave Connell - basic updates. 2018-10-05 - record updated by Dave Connell after a reformatted dataset was provided by Daniela Farias for GBIF/OBIS compliance.
Metadata
- Metadata identifier
- string/ASAC_2940
- Language
- English
- Character encoding
- UTF8
Author
Sponsor
Owner
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- 065126f3-d075-48e3-b782-e87f545238a2
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Date (Last Revision)
- 2015-11-29T18:41:17
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_2940
Point of truth for the metadata record
- Date info (Creation)
- 2008-06-13T00:00:00
- Date info (Last Update)
- 2018-10-05
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
