Winogradsky column lab page!

Welcome to the Winogradsky column lab page! Students from the Departments of Biological Applications and Technology, University of Ioannina and Icthyology and Aquatic Environment, University of Thessaly, Greece and the Microbiology course, Faculty of Sciences, University of Cádiz, Spain, discuss their findings on Winogradsky columns they constructed!

If you want to add a post, please feel free to contact the blog administrators (Hera Karayanni, Sokratis Papaspyrou or Kostas Kormas)!

Καλωσορίσατε στη σελίδα των Winobloggers! Διαδικτυακός τόπος συνάντησης φοιτητών, φοιτητριών και διδασκόντων δύο Τμημάτων από την Ελλάδα: Tμήμα Βιολογικών Εφαρμογών και Τεχνολογιών, Παν/μιο Ιωαννίνων και Τμήμα Γεωπονίας, Ιχθυολογίας και Υδάτινου Περιβάλλοντος, Παν/μιο Θεσσαλίας και ενός από την Ισπανία: Σχολή Θετικών Επιστημών, Πανεπιστήμιο του Cadiz. Παρακολουθούμε, σχολιάζουμε, ρωτάμε, απαντάμε σχετικά με τα πειράματά μας, τις στήλες Winogradsky!

Bienvenidos a la pagina web de los Winobloggers! Aquí los estudiantes y profesores de dos departamentos griegos, el Departamento de Aplicaciones y Tecnologías Biológicas de la Universidad de Ioannina y el Departmento de Agricultura, Ictiología y Sistemas Acuáticos de la Universidad de Thessalia, junto con los estudiantes de Microbiología de la Facultad de Ciencias en la Universidad de Cádiz, se reúnen para observar, comentar, preguntar y responder a preguntas relacionadas con nuestro experimento, la columna Winogradsky.

Winogradksy columns

Winogradksy columns
'In the field of observation, chance only favors the prepared mind' Pasteur 1854

Blog posts

Monday, 30 March 2015

Cadiz, 4A: Weeks 2&3, Winogradsky Column, Group A4

Hello again, everyone! This is our second post about our Winogradsky column, and it has been two weeks, thus we will update the state of the bottle.

Just as a reminder, this is what our column was composed of: 
-Sandy Beach sediment from Rio San Pedro's beach
-Motor Oil
-CaCO3 and FeSO

At first, the bottle was practically dead, with just a few sulphur-reducing bacteria. However, in just two weeks, the bottle seems to be full of life. Lots of new colonies and bacteria have grown in both sides of the column, most of them sulphur-reducing. We can tell that because of the orange colour of the halo around it.

On the illuminated side, a big orange colony has grown in the upper side of the bottle, so we can say it uses oxygen to grow; but in the back side, the non-illuminated one, an insane amount of bacteria has grown, with a strong grey colour; whereas the bacteria follow a black/dark pattern; all surrounded by the already mentioned orange halo. The fact that they grow on the non-illuminated side means that they don’t need light to survive, therefore they are not photosynthetic, and we can see that they grow equally despite the oxygen variation along the bottle, so it is possible that they are anaerobic, yet tolerant, not strict.

Here are some photos of the column, taken after a week and a half:


In the left one we can see the big colony of the illuminated side; on the right one we observe the huge amount of grey and black bacteria that has grown on the dark side.

That is all for now, we will keep you updated with the state of the bottle, so see you all next week!

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