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Asunto:[coaciosforu] Albatros de cola corta: mudanza preventiva
Fecha:Viernes, 14 de Marzo, 2008  09:27:37 (+0100)
Autor:Rafa Saiz Elizondo <rafasaiz @.........net>

http://www.birdlife.org/news/news/2008/03/start_translocation.html

Short-tailed Albatross chicks moved out of the shadow of the volcano

12-03-2008


...volcanic events on Torishima are among the most serious threats to this species


Ten Short-tailed Albatross Phoebastria albatrus chicks have been moved by helicopter, from their current stronghold on Torishima Island to the site of a former colony 350 km to the South-east.

The potential for future volcanic events on Torishima is among the most serious threats to this Vulnerable species. Currently, 80-85% of the world population breeds on a highly erodible slope on the outwash plain from the caldera of an active volcano. Monsoons send torrents of ash-laden water down this slope across the colony site. A volcanic eruption could also send lava, ash or poisonous gases through the colony.

The translocation site, Mukojima, part of Japan’s Bonin Islands (and administratively part of the Metropolis of Tokyo), is non-volcanic. Short-tailed Albatross bred here at least until the 1920s.

"Establishing viable breeding colonies in other safer locations is paramount to ensuring the survival and recovery of the Short-tailed Albatross", said Judy Jacobs of the US Fish and Wildlife Service, which has worked on the translocation of the albatross chicks with staff from the Yamashina Institute for Ornithology, and other Japanese and US organisations which together form the Short-tailed Albatross Recovery Team (START).


Paul Sievert
Short-tailed Albatrosses chicks begin their journey to re-establish a former breeding colony
Zoom In

"The key assumption... chicks that fledge from a translocation site will return to breed at their fledging site, not their hatching site" —Kiyoaki Ozaki , Yamashina Institute for Ornithology


The ten chicks had reached the "post-guard" state, when parents leave them alone for increasing periods, but were still some three months away from fledging. "The key assumption to this approach is that geographic imprinting on the nesting island occurs after this time; chicks that fledge from a translocation site will return to breed at their fledging site, not their hatching site", Kiyoaki Ozaki explained.

START personnel, who hand-reared Laysan and Black-footed Albatross Phoebastria nigripes chicks in preparation for this project, will spend the next three months feeding the chicks, before they take wing and head out to sea. It will be five years before they reach sexual maturity and are ready to return to breed.

The START team intends to translocate at least ten more chicks annually for the next five years.

"Even though its numbers are increasing even a small amount of mortality due to longlining could hamper its comeback" —Ben Sullivan, BirdLife International global seabird programme coordinator

Dr Ben Sullivan, BirdLife International global seabird programme coordinator, said: “This welcome initiative to establish new, secure breeding sites will help this rare species. Even though its numbers are increasing even a small amount of mortality due to longlining could hamper its comeback.”

This is a tremendous international conservation effort, with money coming in from the National Fish and Wildlife Foundation, North Pacific Research Board, the US Fish and Wildlife Service, Japan's Ministry of Environment, The Yamashina Institute for Ornithology, Asahi Shimbun, and Suntory Fund for Birds Conservation.

In addition, Alaska's commercial fishing industry has played a key role in helping to secure Federal funding for this effort.

This news is brought to you by the BirdLife Species Champions and the British Birdwatching Fair - official sponsor of the BirdLife Preventing Extinctions Programme
 

Credits: Short-tailed Albatross Recovery Team (START)



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