CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Emu   
Emu
http://www.birdlife.org.au
  Journal of BirdLife Australia
 
blank image Search
 
blank image blank image
blank image
 
  Advanced Search
   

Journal Home
About the Journal
Editorial Structure
Contacts
Content
Online Early
Current Issue
Just Accepted
All Issues
Special Issues
Research Fronts
Rowley Reviews
Virtual Issues
Sample Issue
For Authors
General Information
Scope
Submit Article
Author Instructions
Open Access
Awards and Prizes
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates
Library Recommendation

red arrow Complete Archive
blank image
With the complete digital archive of Emu now online, we have selected some of the most interesting and significant papers for readers to access freely.

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with BirdLife
blank image
facebook TwitterIcon LinkedIn

red arrow Connect with CP
blank image
facebook twitter logo LinkedIn

 

Article << Previous     |     Next >>   Contents Vol 106(3)

Population and survival trends of Wandering Albatrosses (Diomedea exulans) breeding on Macquarie Island

Aleks Terauds A B, Rosemary Gales B, G. Barry Baker C D, Rachael Alderman B

A University of Tasmania, Churchill Avenue, Sandy Bay, Tas. 7005, Australia.
B Biodiversity Conservation Branch, Department of Primary Industries, Water and Environment, PO Box 44, Hobart, Tas. 7000, Australia.
C Australian Antarctic Division, Channel Highway, Kingston, Tas. 7050, Australia.
D Corresponding author. Email: barry.baker@aad.gov.au
 
PDF (159 KB) $25
 Export Citation
 Print
  


Abstract

Wandering Albatrosses (Diomedea exulans) are globally threatened owing to declines in populations, and the breeding population of Macquarie Island is particularly vulnerable as it comprises fewer than 20 breeding pairs. We describe population trends of Macquarie Island Wandering Albatrosses between 1955 and 2004, combining long-term population data with demographic data collected between 1995 and 2004. Rates of annual breeding effort and survival varied markedly over time and breeding numbers declined from a peak in 1968 to near extinction in the mid-1980s. Underlying this decline was a significant decrease in juvenile survival and, to a lesser extent, adult survival. These changes in survival coincided with changes in long-line fishing effort in the Southern Ocean. Breeding numbers slowly recovered on Macquarie Island through the late 1980s and 1990s, reaching a total of 19 breeding pairs in the mid-1990s. The population remained at about this level in 2004. Relative trends in numbers and survival in the population are similar to those observed in other populations in the Indian Ocean, including Marion Island and Iles Crozet.

   
Subscriber Login
Username:
Password:  

    
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2016