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The Islander Newspaper Ascension Island
  Issue No. 2094 Online Edition Friday 10 February 2012 
Home | Categories | Conservation Please tell us what you think of this article. Tell a friend Print Friendly

Ascension : Turtle Tracks- May 11th 2009
Submitted by The Islander (Islander Internet Editor) 14.05.2009 (Article Archived on 28.05.2009)

We have just completed a short visit to the Island after an absence of 2 (Brendan) and 11 (Susanne) years, respectively and thought readers of the Islander both near and far would be interested in reading about some aspects of our visit.

 

Satellite Tracking

The prime reason for our visit was to deploy state-of-the-art GPS logging satellite transmitters on post-nesting females allowing us to track their migration with a very high precision. We hope that this will help unlock the mysteries of the marvellous navigational skills of the Ascension Island green turtles. Although the nesting numbers at this time of the year are dropping fast, we were able to locate all 5 turtles we needed on Long Beach and our units have now been deployed. Transmitters are simply glued to the shell using two-part epoxy which will fall off in approximately one year. In the meantime, we hope the units will continue to send information on the location of the turtles. Positions as of Sunday night shown below.

 

We are pleased to be able to share the tracks of these turtles on the internet at SEATURTLE.org at the website below.

 

http://www.seaturtle.org/tracking/?project_id=384

Here the tracks will be updated daily and if you are interested you can simply subscribe your e-mail to an update list and a daily map will be sent to you. We have named the turtles after the settlements of the Island: Georgetown, Green Mountain, Two Boats, Travellers and Wideawake. Let us see who is the first to complete the South Atlantic Turtle Odyssey or SATO! So far, Georgetown is in the lead with Two Boats close behind, but it is a long swim and anything could happen.

Brendan and Jacqui check a tag

 

Ongoing Monitoring

As a result of being on the Island it was possible to spend time discussing the ongoing monitoring programme carried out by the Ascension Island Turtle Group, staff from the Conservation Department and a number of dedicated volunteers. The many people involved in this work over the years are to be congratulated as it now approaches the completion of the 11th consecutive season. In particular, the tireless work of Jaquie Ellick year after year should be applauded. The numbers clearly show how, after decades of protection in Ascension and in Brazil, that the population is continuing to grow. Ascension is clearly the second largest green turtle nesting colony in the Atlantic. Something of which to be justifiably proud.

 

Making Links

When baby turtles leave the beaches of Ascension they spend a number of years in the open ocean. Following this, genetic analysis has revealed that, although some settle out into African waters, the majority grow up in the shallow coastal seas off South America; in particular, the waters of Brazil and Uruguay. A very important foraging site in Uruguay is the Marine Protected Area of Cerro Verde where a conservation organisation called Karumbe . Every year, a “Save the Sea Turtle” festival is organised together with local primary school at La Coronilla. In March 2009, the theme was “Where do the turtles come from?” and the children studied the countries of origin of the turtles in their waters as well as taking part in a range of activities (above). For green turtles, one class studied Ascension Island (where 80% of green turtles originate) and have written letters to the children of Two Boats School about their life and Uruguay and the turtles they share. Before we departed the Island, we made a presentation to the junior school about the turtles and the initiative and the children of TBS look forward to receiving the letters from Uruguay and to writing back.

Thanks! We would like to thank all those who helped our stay be productive and enjoyable in particularl the families Ellick, Hobson, Owen and the staff of Conservation, Obsidian (A safe and happy passage home for a fruitful retirement for Shirley).and Two Boats School. The turtle tracking project is collaboration between a consortium of organisations including Ascension Island Conservation, Ascension Island Turtle Group, SEATURTLE.org and the Universities of Exeter (UK), Lund (Sweden), Pisa (Italy) and Swansea (UK).

 

Brendan Godley (University of Exeter, UK)

Susanne Åkesson (University of Lund, Sweden)

 

 

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