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  • And it flies!

    And it flies!

    After crashing my aerial photography plane directly after the first flight, we retrieved the bits and pieces (the plane from the top of a 70m telephone tower & the catapulted-rest by logging a 20m perimeter of bushes), and shipped the plane around the world to get repaired. But 1.5 months later DHL delivered it in Berau and we could fly. And the footage is really cool: here are some first sneak peaks from the air.

    You can see a lot of turtles and my experimental set up. The wave barriers I’ve set up are clearly visible.

     

    Obstacles

    High palm trees/ phone tower are not the only obstacles to fly on Derawan.

    Obstacle 2: While looking at the flight track suddenly the plane flew 180 degrees the other way than planned, the plane was out of sight so we wondered what the disturbance  could have been. The plane corrected itself and safely landed but part of the frame was missing! We repaired it with syrofoam and during our test flight it became clear what did this: Sea eagles! A 1.5m wingspan sea eagle flew 100m above the plane and pulled in his wings in to rocket down on the plane, so after some quick steering I manage to make quick turns and with some shouting the plane escaped from the bird. Every next flight I gave 2 children the task to report any fish eagle and called the plane to the ground until the coast was clear of eagles.

    Obstacle 3: Children: The only place to land the airplane is on the “Lapangan” the soccer field right in the middle of the schools. Everytime that I come walking around the corner with the interesting suitcase the teachers don’t manage to keep the children in there classroom and it would be handy to have 8 hands extra to keep the hands of the plane, get the field cleared & stop the kids from running over the plane.

     

  • Green turtle foraging in Raja Ampat

    Green turtle foraging in Raja Ampat

    Our second destination in our quest to find the green turtle foraging grounds was Raja Ampat. Some of the tracks of the GPS tagged turtles show foraging greens that travel all the way from Raja Ampat to Kalimantan. We were based at Kri with papua diving and did 2 short expeditions; 1 to Batanta & 1 to Wayag – Sayang. We planned our route using the aerial pictures of Max Ammer and the tips of his friendly staff. During the first trip we saw a dugong feeding at dusk on Enhalus leaves in front of the mangroves. The majority of the seagrass meadows were strips of multispecies (incl Enhalus) meadows in front of mangrove lined islands. Because we were the first foreigners to overnight in the village people did not know what to with us and we ended up sleeping in a empty information house on the jetty. In this area the fisherman are mostly Biak people that migrated here some decades ago. The Biak people explained us that green turtles are still hunted because of the tasty meat, in contrast to dugong meat that they did not like too much. Hence not too many foraging turtles, but a very nice trip. Here is a map of our trip and below it, you can see images of the trip.

    [simpleviewer gallery_id=”4″]

  • Green turtle Foraging areas in Wakatobi

    Green turtle Foraging areas in Wakatobi

    After spending so much time on Derawan where green turtles are so abundant we wanted to compare Derawan with other foraging grounds in Indonesia. Wakatobi was our first destination. In contrast to nesting sites of which a lot is known. It is unclear where the green turtles forage in Indonesia, so the majority of the time we spend searching for foraging grounds. The local Bajau people spend all their time at sea and were the most helpful in pointing us in the right direction. The Bajau is the same “tribe” that settled in Derawan but in contrast to Derawan they do hunt adult turtles. So the further away from the villages the most likely to find foraging grounds. In Wakatobi, green turtles graze in highest densities on the South reefs; Karang Kapota, Karang Tomia, Karang Koko and Karang Kaledupa, and around the outer Islands were they also nest. Pulau Runduma, Pulau Anono, Maramoho.

    Overall we spend our most time looking for the turtles instead of finding them. We did several surveys of seagrass meadows to look for grazing evidence and suitability for grazing. The turtles we found most were Hawksbills and not the Greens we were looking for. But there is some evidence that on the South reefs the densities are far bigger. Time to go back some day. An impression of the conditions can be seen below.

    [simpleviewer gallery_id=”2″]

  • Article in Seagrass Watch

    Article in Seagrass Watch

    I was delighted to be requested to provide an article for Seagrass Watch magazine. The articles is published in the November issue. You can download the issue from their site (my article is on page 6) or download directly from the Seagrass Watch site (big pdf of 22MB). Enjoy the reading!

  • The latest experiment on Derawan

    The latest experiment on Derawan

    Just got back on the mainland. Last month we succesfully set-up a large experiment on Derawan to look at interactive effects of hydrodynamics & turtle grazing on seagrasses. This involved building 30 cages and 15 large underwater wave-bunkers for which we almost used al the sand from the nearby sand spit. To determine the location of the plots we used an unmanned aerial photo plane. A small disaster happened and the plane crashed in the telephone tower, and the plane is now in Switserland for repair. See below for a photo-report of the last month:

     

  • Checklist week 1 fieldwork Indonesia

    Checklist week 1 fieldwork Indonesia

    And were back! To give you an idea of what we did before travelling to our remote fieldwork site, here’s a (simplified) checklist:

    • Arrange research & travel permit, KITAS, letters for governors, certificate of good conduct police (10 trips, at least 3 days)
    • Give presentation at World Delta Summit & follow EcoDynamic Design workshop
    • Buy all research equipment (60 kg) from small shops all around Jakarta,
    • transport this on the back of Arifins’ motorcycle and busway to avoid being stuck for ours in Jakarta’s traffic jams
    • Book 25 domestic flight tickets
    • Get essential soto-ayam & es jeruk nipis,
    • Prepare 30 under-water cages at Wawans house
    • Introduce Iris & Peter to Indonesia
    • Visit the wedding of Arifin’s son that follows Indonesia’s principle: SMP (sesudah makan pulang; finished your food? go home)
    • Go to Open Science meeting (Jakarta) and give OSM workshop (Makassar)
    • This all with laryngitis under 33 degrees celsius in formal dress.

    This time Iris and Peter will join me for their MSc. intership during this last fieldwork period of my Phd. Here they are presenting our new penyu-team merchandise. You can follow Peters’ stories here, and Iris’ on facebook

  • CERF fieldwork trip: Manatee!

    CERF fieldwork trip: Manatee!

     

    After a week of CERF-ing (Conference of the Coastal & Estuarine Research Federation) in Daytona Beach, Florida, USA, I was totally saturated with new knowledge. So a great time to go out to the field & spend a day searching for Florida seagrasses near Sebastian Inlet. Lori, our guide never saw the seagrass in such turbid & low biomass conditions and even when snorkeling in knee deep water we couldn’t see the seagrass or bottom. BUT I did saw my first manatee in the wild, they came very close to us (± 2m). A cool way to end a conference!

  • Translation Science terms & Alternatives

    Translation Science terms & Alternatives

    I guess I have to rewrite my paper now.. :

    Thanx to by my not-scientist boyfriend that send me the link on Discovermagazine.com

  • Paper Published in Journal of Ecology

    Paper Published in Journal of Ecology

    I am very happy to present to you: the 2nd Paper of my thesis, that has been published online in Journal of Ecology this month: check it out!: