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Leatherback Turtles Revisted

Save Our Leatherbacks Operation (S.O.L.O.)

Posted: 21 September 2006 11:40 AM
Last Update: 24 September 2006 02:25 PM
4 comment(s)
Categories: Features,  Trip Reports
Author: Larry McKenna
Related Link: S.O.L.O.

S.O.L.O. Press Release #8

By

During the months of July and August, I and a select group of adventurers from Mexico, Australia, Germany, England, France, Spain, Singapore and the United States visited the nesting beaches of the Pacific Leatherback Sea Turtles (Dermochelys Coriacea), in very remote Papua Barat, Indonesia. My initial visits and exposure to these “Gentle Giants of the Pacific”© was a year previously in a far different manner than these just concluded trips.

Giant Leatherback female exiting her nest after laying eggs.
S.O.L.O. Director, Tony Moats examines nesting evidence

The purposes of these visits to the leatherbacks have many objectives: a) to obtain factual information about the turtles; their nesting locations and environmental hazards, b) to assess the activities of the non Indonesian groups/Foundations/Donor/other Govt. agencies which have been involved in research over the past years of records and to assess what (if any) improvements have been accomplished toward saving these turtles, c) to understand what actions are on going or planned to increase the hatch out rates and adult survival & return ratios may be, and d) to assess based on our 2005 visits and data compilation if any noticeable or significant changes are evident over a 1 year period.

A summary of the findings (to be expanded upon and a more lengthy article) presented both encouraging and discouraging information.

Encouraging: There appears to be MORE involvement with the turtle research at both Papua beaches of Jamursba-Medi (JM) and Wermon in process by indigenous Papuan people. Students and faculty of the University of Papua have undertaken Leatherback research at both beaches to count nests, emerging females from the sea and egg hatch rates as compared to number of eggs laid.

Govt. Environmentalists, Univ. of Papua Students and S.O.L.O. Volunteers conduct research as leatherback heads back to the sea

Their program is assisted by the Environmental Department of Indonesian Govt in Papua II (Sorong region). A very competent researcher of this Department has been assigned as their mentor and “Guardian”.

As in any new program, there are “flubs” at the beginning. Where this was explained (to me) as a full nesting season program to keep people AT the beaches for the entire nesting season --- as this has NEVER been done to collect an entire season of complete data --- that concept fell short with students arriving and departing to only obtain sufficient data for their term research paper. At one period, there were 2 groups on the beaches which collected conflicting data.

This is a beginning with promise of a more comprehensive University involvement later. My chats with the University staff indicate they are motivated and will correct some earlier misunderstandings. That Papuan University level students wish to and are becoming involved in efforts to save this endangered species on THEIR homeland beaches is terrific. With our support, perhaps a genuine good can come of this program.

Our teams of hired villagers with management oversight have initiated a portion of our designed program (to the limited extents allowed by funds Donated). This season 4 men patrol the entire 18 km of JM beach at night, every 2 nights; 2 go East and 2 to West from the central house location. Egg nests are marked and initial data is taken. A turtle tagging effort is underway. As in years past, a goal of equipping 5 females each season continues. This year, only 2 turtles were instrumented as a direct result of decreased numbers arriving at the beach to nest. The day effort of marking the exact nest locations is handicapped by funds to hire more helpers. The extreme heat of the sand becomes unbearable, even for Papuan feet at about mid day. We need to hire more staff.

Discouraging: Overall, there appear to be FEWER females returning to nest than 1 year before. This was predicted, based on models postulated in my book; “Almost Gone” as developed from 2005 nesting data and was correlated with research by accepted scientists. In 2005 we estimated there were approximately 700 nesting females remaining in the Pacific families. Now, 1 year later, this number appears to be approximately 400! The decrease in numbers approaches that estimated to be killed by Asian longline fishing boats who still scour the Pacific with NO checks and balances of how and what they wantonly kill in search of tuna and sword fishes. The beaches are less studded with nest stick markers than before. The stark decrease in nests is a definite indicator of serious troubles to the survival issue.

The number of females who come to the beach, look for her nesting location and then go to sea is now about 30% of the total females which exit the sea. The reasons are not known, as he research as to “why” has not been thought of yet. The lessening on the number of nests and eggs by this event adds to the peril of species survival.

Leatherback female goes back to the sea without laying eggs

The number of eggs per nest and the hatching ratio is in a worsening state as compared to 2005. Eggs laid per nest are less; many are deformed (excluding the “false egg” numbers). We identified a total hatch out of between 3 and 5 babies from a nest of 60 to 70 eggs.

5 just hatched babies fresh from climbing out of a nest of 100 eggs.
No more survived. These 5 went to the sea.

These were observed in real time and by searching for the little flipper marks in the wet sand heading to sea. Back tracks led to their nests which were uncovered by the local experts to reveal more nest damages. About 10 to 15% of the babies which crawled out of nests, we observed, were deformed. They died before reaching the water.

Added study on other turtle populations indicates that the egg shells are not as impervious to water seeping as thought. The shells, even though appearing to be hard, are porous.

Sea water and hot sun destroys eggs before hatching

When the sea water from global warming soaks the nests as reported previously (“ALMOST GONE”), now it is postulated that the water penetrates the shell and drowns the embryo, in addition to cooking others with the hotter temperatures.

Egg predation by both wild and domestic pigs and dogs continue, even with the presence of more people armed with rifles on the beaches.

Armed beach guard to TRY to reduce predation.
2 “Wild” Pig-destroyed nests in background

These observations will be expanded later as added information continues to flow to us from our Indonesian “partners” in this enterprise.

On return from the Expeditions in late August, we were and are excited to receive a message from Project Aware Australia. The note announced that Project Aware had approved a grant of funds to assist with our All - Volunteer efforts to save these Giant Turtles. We, as a foundation, are quite pleased that the PADI family has elected to become a partner with us. The grant request was our 1st request for help and 1st to be approved. We hope this “seed money” and environmental Partnership will be an excellent harbinger to more donors to pitch in and help us.

Will THIS leatherback female return in 2007?

For further information on our efforts AND to become a Donor and Supporter and a Volunteer, go to our web site: www.leatherbackturtles.org. YOUR financial help is most necessary for us to succeed.

4 Comment(s):

  1. Larry thanks so much for this write up and the excellent pics.  The leatherback sea turtle is one of my favorite marine creatures and unfortunately I have only been able to see two really close up here in the Atlantic/Gulf.  One was in water swimming surrounded by cobia and one was brought to a stranding facility where I took pics of the wounds, huge gashes from some sort of huge boat or ship prop it looked like.  It mercifully died soon after.
    The long lines are certainly a problem but WHY are the hatchlings deformed?????  That seems to be the most distressing statistic to me in your report.
    Yes so very critically endangered.  They say the kemps ridley is the most endangered sea turtle but a lot of us think that probably the leatherback is the most endangered and the Pacific leatherback seems to be doing worse than the Atlantic populations?
    Thanks, Carol

    Posted by seagrant  on  09/21  at  08:06 PM
  2. Diving in Cozumel in the early 80’s was supurb, but slowly, the diver wear and tear impacted the reefs.  Little was done here in the early 80’s to protect the reef.  But finally, through education and research, a plan was put in place.  Dive masters included ideas for reef protection in their dive briefings and enforced those ideas, fishing in the Marine Park was outlawed, the islanders learned to value the importance of their best natural resource.  Cozumel is doing it right.  That being said, think about the Pacific Leatherback turtles trying to find a place to lay their eggs among the 17,000 islands that encompass Indonesia.  Yes, they might find a beach and lay their eggs.  But the mother then returns to the sea, and there is no protection for the nestlings.  How can they survive if the people do not understand that the nests must remain untouched, not molested by wild pigs, dogs or other human beings?  I have seen these nestlings, and they are only 5 inches long!  How can anything of 5 inches survive in the Pacific Ocean? It is time to step up before these magnificent giants pass into oblivion.  It is up to us to pass on the knowledge that we have and the support we can share to keep our world the way we want for our grandchildren and their grandchildren.

    Posted by Sheila Mc  on  09/22  at  07:20 AM
  3. I was on one of Larrys trips this year and it was a wonderful experience.  Watching these massive turtles struggle on the beach to lay their eggs.  The expeditions seem to be increasing the awareness of the natives of the importance of this turtle species.  I hope that they will see if we come from all over the world to help the leatherbacks, they will also take the initiative to help the cause. I plan on going back next year.
    I have only seen Leaatherbacks in the ocean bating prior to this years trip and didn’t realize how massive they are, prior to seeing them
    up close.  Larry - Article has great coverage of the cause.  Keep up the wonderful work and maybe our grandchildren will have the chance to see Leatherbacks.....Ann

    Posted by canngo  on  09/22  at  07:50 AM
  4. Posted for DOUG:

    Well, folks, if you ever want to see the largest sea turtle on earth alive, you’d better get going right away.  700 nesting females last year, 400 this year.  That suggests they have little more than a year to go.  Extinction is forever, no matter what Spielberg puts on a movie screen using computers.  This is an extreme emergency, as extreme as an endangered species can get into, short of the last one about to die.  Which will happen very soon.  There are sea turtle species listed as endangered with 10’s or even 100’ thousands of individuals left.  Some, like the Green Sea Turtles in Hawaii, are actually making a comeback due to protection.  But not the giant of them all; the leatherbacks.  They need action now.  Larry needs all the help he can get, and he needs it right away, not next year, that will be too late.  Help in any way you can, and if you have any ideas of how Larry can get more help, let him know.  We can’t let this one slip through our fingers.  Amost nobody knows about this, and way too little is being done.  Thanks to everybody who helps!  -Doug (PhD, Biologist)

    Posted by Eric Cheng  on  09/24  at  04:25 PM

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