TemperateReefBase Geonetwork Catalogue
Macquarie Island Elephant Seal Populations 1985 Onwards
This dataset contains the results from studies of the Elephant Seal (Mirounga leonina) at Macquarie Island. Results from branding surveys and photographs from 1985 onwards are reported. Numbers, life stage, sex, moult stage and migration patterns have been reported. Currently some 2000 pups a year are branded and the dataset includes birth dates, weights at birth and weaning and at 6, 12 and 18 months.
This work was completed as part of ASAC (AAS) project 2265 (ASAC_2265).
Objectives:
1. To prepare research papers, from the extensive southern elephant seal dataset, that deal with key demographic parameters of the population such as size, age specific survivorship, fecundity, recruitment into the breeding population, age specific growth rates, and intrinsic rate of change of the population. In addition, later papers will investigate interannual variability in these parameters, how these relate to changing environmental conditions, and the effects of this on long term population fluctuations.
2. To analyse and compare stable isotope ratios in the facial vibrissae of the seals and the hard parts of their prey to determine the geographical positions of the major foraging grounds of the seals. The isotope values will also allow the food webs, that support the seals, to be better defined.
3. To measure the growth rates of elephant seal vibrissae so that changing isotope values, related to the prey and foraging areas, can be referred to particular foraging periods. Elephant seals characteristically have two separate periods of foraging: one in summer and one in winter. The positions of these episodes on a vibrissa can be identified once the growth rates of vibrissae are known.
Taken from the progress report for the 2009-2010 season:
Progress against objectives:
1. One paper published from the elephant seal dataset. Two papers also published during 2009/10 using data collected opportunistically during the life of this project.
2. PhD student Andrea Walters continues to analyse the results of the whisker analyses. She has presented some of her results at the AMSA 2009 marine connectivity conference in Adelaide.
An honours student has been engaged (start date March 2010) to analyse the squid component of the seals' diet.
3. John van den Hoff spent the early summer at Macquarie Island finalising the collection of the demographic data. 2154 tag/brand resights were recorded. Collection of the data has continued on the island by Chris Oosthuizen, Ben Arthur and Iain Field since John returned to Australia. When those field workers return data collection will cease.
Simple
Identification info
- Alternate title
- Macquarie Island Elephant Seal Populations 1985 Onwards
- Date (Publication)
- 1999-10-07
- Edition
- 1
Originator
Publisher
Principal investigator
Principal investigator
Principal investigator
Collaborator
- Name
- CAASM Metadata
- Status
- Completed
Custodian
- Topic category
-
- Biota
- Oceans
Extent
))
Extent
- Description
- Temporal Coverage
Temporal extent
- TimePeriod
- 1985-01-01 2015-01-31
- Title
- Tag loss probabilities are not independent: Assessing and quantifying the assumption of independent tag transition probabilities from direct observations
- Date (Publication)
- 2009
- Citation identifier
- 372
Author
- Name
- Journal of Experimental Marine Biology and Ecology
- Page
- 36-42
- NASA/GCMD Earth Science Keywords
-
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CARNIVORES > SEALS/SEA LIONS/WALRUSES
- EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS
- EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > POPULATION DYNAMICS
- EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS > SURVIVAL RATES
- EARTH SCIENCE > BIOSPHERE > ECOLOGICAL DYNAMICS > SPECIES/POPULATION INTERACTIONS
- Keywords
-
- Southern Elephant Seal
- Population
- Model
- Macquarie Island
- NASA/GCMD Earth Science Keywords
-
- FIELD SURVEYS
- FIELD INVESTIGATION
- NASA/GCMD Earth Science Keywords
-
- OBIS > OCEAN BIOGEOGRAPHIC INFORMATION SYSTEM
- COML > CENSUS OF MARINE LIFE
- NASA/GCMD Earth Science Keywords
-
- AMD/AU
- CEOS
- AMD
- OBIS/AADC
- NASA/GCMD Earth Science Keywords
-
- OCEAN > SOUTHERN OCEAN
- 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 snapshot copy of the database taken in January 2015, but it is not publicly available for download. For access, contact the Australian Antarctic Data Centre. Species distribution data are published to GBIF and OBIS if it is over 2 years old.
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=AADC-00102 when using these data.
- Language
- English
- Character encoding
- UTF8
Distribution Information
Distributor
Distributor
Distributor
- Fees
- free
Distributor
- Fees
- free
- Units of distribution
- kb
- Transfer size
- 67
- Distribution format
-
- OnLine resource
-
GET DATA
Download the January 2015 snapshot of the Seal Tagging Database
- OnLine resource
-
GET DATA
Download point for further details about the project.
- OnLine resource
-
PROJECT HOME PAGE
Public information for ASAC project 2265
- OnLine resource
-
VIEW RELATED INFORMATION
Citation reference for this metadata record and dataset
- Maintenance and update frequency
- As needed
- Maintenance note
- 2008-03-03 Dave Watts - added project and access details to GBIF. 2009-04-09 - record updated by Dave Connell based on information submitted in progress report. 2010-04-12 - record updated by Dave Connell based in information submitted in progress report. 2014-09-09 - record updated by Dave Connell. 2017-01-23 - record updated by Dave Connell - basic updates.
Metadata
- Metadata identifier
- string/AADC-00102
- Language
- English
- Character encoding
- UTF8
Author
Sponsor
Owner
Type of resource
- Resource scope
- Dataset
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Citation identifier
- 09bb18c0-5103-4ee5-9b36-e9be4b7fd02f
Alternative metadata reference
- Title
- gov.nasa.gsfc.gcmd
- Date (Last Revision)
- 2015-11-30T03:57:05
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/AADC-00102
Point of truth for the metadata record
- Date info (Creation)
- 1999-10-07T00:00:00
- Date info (Last Update)
- 2017-04-26
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
