Feel free to download any of our videos and please credit them as indicated.
This video was edited by the bachelor students Léa Keller and Tina Gautschi and presented at the final presentation
of their Bachelor thesis. Here you can see some of our Ecohydraulics research in action. Tina’s and Léa’s bachelor
thesis was entitled: “Quantifying macroinvertebrate responses in laboratory-based down ramping simulation”.
Video credit: Tina Gautschi and Léa Keller
Video description: Phytoplankton aggregates (‘marine snow’) generated in the laboratory and incubated with a
bacterial strain, previously isolated from natural marine aggregates in the ocean. Note that the aggregate does
not exhibit drastic physical degradation.
Video credit: Lars Behrendt, Uria Alcolombri (supported by the Moore Foundation)
Video description: Phytoplankton lipid extracts immobilized on a glass surface and incubated with a fluorescently
labeled bacterial strain, previously isolated from natural marine aggregates in the ocean, and transformed with
GFP. This strain degrades the lipid droplet.
Video credit: Lars Behrendt, Uria Alcolombri (supported by the Moore Foundation)
Video description: Phytoplankton lipid extracts immobilized on a glass surface and incubated with a bacterial
strain, previously isolated from natural marine aggregates in the ocean. This strain is incapable of degrading
the lipid droplet.
Video credit: Lars Behrendt, Uria Alcolombri (supported by the Moore Foundation)
Video credit: Jen Nguyen (supported by the Moore Foundation) Dowload Video
Video credit: Jen Nguyen (supported by the Moore Foundation) Dowload Video
The full 70 gb data set (2000×2000 pixels, 10 min, 15 fps) is available here. The file can be accessed using NIS Elements Viewer, which also gives access to the metadata.
Video credit: Steve Smriga Vicente Fernandez (supported by the Moore Foundation)
These videos are short clips taken out of a series of 50 videos of a diatom chain’s lysis and the bacterial response. Each video is 1 min long, at 60 fps, There are approximately 5 min between videos. These representative clips demonstrate the bacterial response near the start and end of the diatom chain’s lysis.
Video credit: Steve Smriga Vicente Fernandez (supported by the Moore Foundation)
Fluorescent Vibrio coralliilyticus in wells of the in situ chemotaxis assay. The first video shows negligible accumulation in a control well, where no chemotaxis is expected. The second video shows strong accumulation in response to marine broth as a chemoattractant.
Video credit: Ben Lambert (supported by the Moore Foundation)
Behavioral response of a “planktonic population” isolate and a “biofilm-forming” isolate in a temporally varying nutrient landscape. Behavioral responses of two recently speciated marine bacterial lineages are compared under switching chemical gradient. The upper two panels show cell swimming trajectories of V. cyclitrophicus1F111-pGFP (S) or V. cyclitrophicus ZF270-pGFP (L) isolates, as indicated in the panels. Shown is the vertical cross-section of the test channel (width = 1 mm). Model chemoattractant (serine) release into the test channel occurred from the left sidewall for the first 10 min and was then switched to the right sidewall. The lower two panels show the temporal dynamics of the chemoattractant concentration field in this experiment , modeled numerically. Each panel shows the concentration field within the vertical (xz) cross-section of the agarose layer and the test channel, as indicated. Colors represent the chemoattractant distribution.
Video credit: Yutaka Yawata (supported by the Moore Foundation) High resolution version here