Yvonne, a coral reef ecologist, is a research fellow whose is using remote sensing to investigate coral reef community structure and community metabolism as part of the COral Reef Airborne Laboratory (CORAL) mission and runs flume experiments to validate remotely sensed coral reef metabolic rates. Currently, she also investigates what the driving factors of photosynthesis and calcification of reef organisms are on different spatial scales using microsensors, incubation chambers and in-situ gradient flux approach.

Yvonne received her PhD from the Leibniz Center for Tropical Marine Ecology/University of Bremen where she studied the resilience of coral communities to natural and anthropogenic disturbances. Following this, she joined GEOMAR, Helmholtz Center for Ocean Research (Kiel, Germany) where she accepted a postdoctoral researcher position, followed by a role as a research scientist. While at GEOMAR, Yvonne investigated coral adaptive mechanisms to strong latitudinal temperature and nutrient gradients in the Red Sea.

Research Interests:
Coral adjusting mechanisms thriving along environmental gradients and in extreme environments; effect of global climate-driven changes on reef organisms; coral and coral reef metabolism and carbon and energy budgets; seagrass ecophysiology

Educational Background:
Leibniz Center for Tropical Marine Ecology/University of Bremen, Germany
-PhD Marine Ecology (2011)
University of Bremen, Germany
-MSc Aquatic Tropical Ecology (2006)

Further Information:

Selected Publications:
Wahl M, Schneider Covachã S, Saderne V, Hiebenthal C, Müller JD, Pansch C, Sawall Y (2017) Macroalgae may mitigate ocean acidification effects on mussel calcification by increasing pH and its fluctuations. Limnology and Oceanography, doi: 10.1002/lno.10608

Wahl M, Saderne V, Sawall Y (2016) How good are we at assessing ocean acidification impact in coastal systems? Limitations, omissions and strengths of commonly used experimental approaches with a special emphasis on the neglected role of fluctuations. Marine and Freshwater Research, doi.org/10.1071/MF14154 (review article)

Sawall Y, Al-Sofyani A, Hohn S, Banguera-Hinestroza E, Voolstra C, Wahl M (2015) Extensive phenotypic plasticity of a Red Sea coral over a strong latitudinal temperature gradient suggests limited acclimatization potential to warming. Scientific Reports 5:8940

Robitzch V, Banguera E, Sawall Y, Al-Sofyani A, Voolstra CR (2015) Absence of genetic differentiation in the coral Pocillopora verrucosa along environmental gradients of the Saudi Arabian Red Sea. Frontiers in Marine Science, doi: 10.3389/fmars.2015.00005

Sawall Y, Al-Sofyani A, Banguera-Hinestroza E, Voolstra C (2014) Spatio-temporal analyses of zooxanthellae physiology of the coral Pocillopora verrucosa along large-scale nutrient and temperature gradients in the Red Sea. PLoS ONE 10.1371/journal.pone.0103179

Sawall Y, Al-Sofyani A, Kürten B, Al-Aidaroos AM, Hoang BX, Marimuthu N, Khomayis HS, Sommer U, Gharbawi WY, Wahl M (2014) Coral communities, in contrast to fish communities, maintain a high assembly similarity along the large latitudinal gradient along the Saudi Red Sea coast. Journal of Ecosystem and Ecography S4: 003. doi: 10.4172/2157- 7625.S4-003

Sawall Y, Khokiattiwong S, Jompa J, Richter C (2014) Calcification, photosynthesis and nutritional status of the hermatypic coral Porites lutea: contrasting case studies from Indonesia and Thailand. Galaxea, Journal of Coral Reef Studies 16:1-10

Seemann J, Sawall Y, Auel H, Richter C (2013) The use of lipids and fatty acids to measure the trophic plasticity of the coral Stylophora subseriata. Lipids 48:275-286

Sawall Y, Jompa J, Maddusila A, Richter C (2013) Coral recruitment and potential recovery of eutrophied and blast fishing impacted reefs in Spermonde Archipelago, Indonesia. Marine Pollution Bulletin 74:374-382

Sawall Y, Richter C, Ramette A (2012) Effects of eutrophication, seasonality and macrofouling on the diversity of bacterial biofilms associated with coral reefs of the Spermonde Archipelago, Indonesia. PLoS ONE 7(7): e39951

Sawall Y, Teichberg MC, Seemann J, Litaay M, Jompa J, Richter C (2011) Nutritional status and metabolism of the coral Stylophora subseriata along a eutrophication gradient in Spermonde Archipelago (Indonesia). Coral Reefs 30:841-853

View Yvonne's CV here.

Yvonne is currently accepting interns.