Microenvironmental #ecology of microbial communities & #symbiosis. Researching: #corals, #seagrass, #macroalgae, #biofilms & #microbes. Headed by Michael Kühl
#Marine #Biology, Department o
Joined May 2017
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MicroEcology Lab retweeted
New paper in Physiologia Plantarum
We addressed whether acidification of the leaf microenvironment can be considered a carbon concentrating mechanism in seagrass (Z. marina). We show relative adaxial surface acidification (or delayed basification) leading to enhanced CO2 formation, which enable enhanced photosynthetic performance in seagrass.
Link: dx.doi.org/10.1111/ppl.71158
#seagrass #photosynthesis #carbon
@roskildeuni
@MicroSensing
MicroEcology Lab retweeted
Our joint review with @MicroSensing Lab on #FLIM in @ACSPublications is now highlighted on a cover of the Volume 6, Issue 4 of ACS Measurement Science Au! #MyACSCover pubs.acs.org/toc/amachv/6/4
MicroEcology Lab retweeted
Thank you @QuantaMagazine & Marlowe Starling for writing such an insightful story about our recent articles in @ScienceAdvances & @PRX_Life, which highlight the combined role of #cilia and O2 in corals' ability to withstand rising temperatures
@MooreFound
quantamagazine.org/corals-sp…
MicroEcology Lab retweeted
New paper in Marine Chemistry
"Multi-parameter imaging with planar optodes and 2D DET hydrogels: Application in the rhizosphere of seagrass (Z. marina)"
We show novel methodological development of combined planar optode and 2D DET hydrogel imaging, which enables simultaneous measurements of, for example, pH, dissolved Fe, O2, NO2−, NO3− , etc in marine sediments. Combinations were deployed in seagrass rhizospheres and enabled detailed investigations of biogeochemical processes and dynamics in the adjacent sediment.
Link: sciencedirect.com/science/ar…
#seagrass
@roskildeuni
MicroEcology Lab retweeted
Corals may face more than bleaching during marine heatwaves.
New research shows that microscopic cilia that help corals transport oxygen can collapse under extreme heat, creating severe oxygen stress and accelerating mortality.
A new physiological tipping point for coral survival in a warming ocean.
🔗 bese.kaust.edu.sa/news/detai…
#CoralReefs #OceanScience #ClimateChange @pacherres_co @MicroSensing
MicroEcology Lab retweeted
Experiments and mathematical theory reveal how cilia generate 3D flows and transport oxygen around reef-building corals. @PRX_Life @pacherres_co @MicroSensing @MCNDLab @uommedia. Supported by @arc_gov_au Future Fellowship and @MooreFound
journals.aps.org/prxlife/abs…
MicroEcology Lab retweeted
Combining mathematical modeling and experiments. A great story by Antony Selvan and myself together with @BrumleyLab @MicroSensing and collaborators. Supported by @arc_gov_au @MooreFound #MSCA #coral #cilia
@PRX_Life
doi.org/10.1103/fhfw-f1nv
MicroEcology Lab retweeted
Et internationalt forskerhold med danske forskere i spidsen har fundet en ny og ekstra forklaring på, hvorfor koraller lider i varmere havvand som følge af de menneskeskabte klimaforandringer politiken.dk/del/XQpN8cAHR7n…
MicroEcology Lab retweeted
Our findings reveal a hidden tipping point in coral survival: corals may begin to suffocate internally before or alongside bleaching
These process occur in a water layer <1mm tick, easy to miss in conventional measurements but potentially critical for understanding coral health
MicroEcology Lab retweeted
At higher temperatures, cilia coordination stops. Microscopic flows collapse, oxygen transport slows, and oxygen levels inside the coral drop to critical levels
Using high-speed microscopy, oxygen imaging and flow measurements we directly visualize flow and oxygen around corals
MicroEcology Lab retweeted
But the benefit doesn’t last. As temperatures rise further, these flows begin recirculating oxygen poor water near the coral surface, while coral oxygen demand keeps increasing.
MicroEcology Lab retweeted
Under moderate warming, corals initially cope as their cilia starts to beat faster, essentially creating stronger swirls and temporarily improving oxygen transport.
This mechanism is particularly important at night when both the coral and symbiotic algae consume oxygen.
MicroEcology Lab retweeted
Corals 🪸 are covered with tiny hair-like structures called cilia. Their synchronized beating creates microscopic swirling flows that act like a natural ventilation system, helping transport oxygen around the coral tissue.
MicroEcology Lab retweeted
Coral reefs are increasingly threaten by marine heatwaves, but what pushes corals past their breaking point?
New in @ScienceAdvances: we found that corals can lose the microscopic system that helps move oxygen around their tissues during heat stress 🪸
science.org/doi/10.1126/scia…
MicroEcology Lab retweeted
Thank you to all collaborators and funding agencies who made this research possible:
Michael Kühl @MicroSensing
Mads, Mikkel @uni_copenhagen
Douglas @BrumleyLab
Soeren @SoerenAhm
Max, Manuel @KAUST
@MooreFound
@novonordiskfond
@arc_gov_au
#MSCA
MicroEcology Lab retweeted
New research finds that heat stress can disrupt and eventually destroy corals’ cilia-based ventilation systems. scim.ag/3RCKBcp
MicroEcology Lab retweeted
Heat-stressed cilia increase coral deoxygenation. This collaborative work published in @ScienceAdvances with @pacherres_co @MicroSensing @SoerenAhm examines how microscopic currents generated by corals vary with water temperature. @arc_gov_au @MooreFound
science.org/doi/10.1126/scia…
MicroEcology Lab retweeted
New paper alert 🚨 my 2nd PhD chapter has been published ‼️ Uncovering increased maximum oxyregulation capacity retained in corals transplanted from an extreme mangrove environment to a reef flat on the Great Barrier Reef🪸
doi.org/10.1016/j.envres.202…
MicroEcology Lab retweeted
I would bet that Don Bryant knew more about phototrophic physiology than anyone who has ever lived on Earth.
link.springer.com/article/10…
MicroEcology Lab retweeted
I am thrilled to receive a Future Fellowship from @arc_gov_au. The project, "Understanding the role of microscale fluid dynamics in biology", aims to develop novel mathematical models and experimental tools for investigating microscopic fluid flows in biology. @SciMelb @UniMelb