How do green sea turtles influence sediment carbon dynamics in tropical #seagrass ecosystems? This is exactly what Susi Rahmawati is investigating during her PhD in our group at WUR….
(more…)Category: Seagrass
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Megaherbivores may impact expansion of invasive seagrass in the Caribbean: our paper in Journal of Ecology
Green sea turtle digging its own watery grave due to invasion of non-native seagrass….
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Paper out: estimating the exposure to river plumes for coastal ecosystems
Can we estimate the exposure to river plumes for coastal ecosystems? During my PhD fieldwork I had the opportunity to collaborate with a multidisciplinairy team of hydrologists, physical geologists, modelers, coral reef biologists to study this in East Kalimantan, Indonesia.
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Personal research NWO-VENI grant received!
Happy news! I received a personal VENI (research) grant today, from the Netherlands Organization for Scientific Research (NWO)! To work for 3-4 yrs on “Global defaunation and plant invasion: cascading effects on seagrass ecosystem services”. It will involve … (more…)
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Experiment on (invasive) seagrass & turtle grazing, Bonaire
Two weeks ago we arrived on Bonaire. Since then we worked non-stop and we made great progress! The first thing we did was to set up a turtle exclosure experiment on the seagrass beds in Lac Bay, after Funchi (STCB) and Sabine Engel (STINAPA) kindly showed us all the suitable seagrass areas. The native dominant seagrass species here are Thalassia testudinum (or turtle grass) and Syringodium filiforme. However after a quick snorkel survey across the bay the cover of invasive seagrass species Halophila stipulacea seems almost higher.
That is impressive since the species was reported only in 2010 for the first time in Lac Bay. NGO Sea Turtle Conservation Bonaire that works since 1991 on turtles here estimates the sea turtle population (green and hawksbill) between 1000-2000 turtles (more…)
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Green turtles threaten their own food source in MPAs: New paper Proceedings B
Our new paper is out in Proceedings of the Royal Society B! Green turtle populations have expanded so much in Indonesia’s east coast islands marine protected areas that they are adopting new feeding habits, degrading the ecosystem and threatening their own conservation. Read more about “Habitat collapse due to overgrazing threatens turtle conservation in marine protected areas” and download the paper here.
After press coverage of the Associated Press the news has gone viral! see Washington Post, Time and others
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Research cruise SIBES 2013 on the Navicula
This week I am joining the SIBES 2013 crew on the Navicula. They are sampling benthos at ± 4500 points spread througout the Wadden Sea, a program that is already running for 6 years. (more…)
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PhD thesis in the pocket!
The 22th of March was the Big Day, I had to defend my PhD thesis. After a 10 minute summary about my research I had one hour to answer the questions of 8 (associate) Professors. 1.5 hours later this happy photo was taken. (more…)
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My research in the (Dutch) media
After sending out the press release about my upcoming PhD defense, my research on seaturtles destroying their own habitat did receive some attention in Trouw newspaper and a science-radio program. Check these links here.
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10th ISBW Buzios, Brasil (& sea hares)
The 10th international seagrass biology workshop was a success! Together with seagrass specialists from around the globe we enjoyed 3 days packed with talks & workshops in a resort town of Buzios in Brasil. See WSA’s blog by Sity for a nice overview of the highlights and of the speakers (gallery seagrass watch)
It also included a field trip to the seagrass (Halodole wrightii) meadows of Ilha do Japonês, Cabo Frio. Here Dominik and I found some small green turtles above the seagrass bed and loads of sea hares swimming and mating.
Together with the other young seagrass punks we had a great conference! See then here in their natural habitat:
Many thanks to Tjeerd & Leon to provide funding for this great opportunity