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

Sunday, 26 April 2015

Winogradsky column. Biotechnology Group A8, UCA

Hello everyone!

This is the third time I write in this blog. I have some news about the changes that the bottle has experimented for these weeks.

First of all, the bottle has turned into a brown colour (it seems with sand's beach). The reason of this change could be that some of the bottle´s components have disappeared (it could be disappeared the iron sulfate, the pieces of paper or another component). But another possibility could be the sunlight, the oxygen or the carbon dioxide.

It could be possible that the microorganismes have caught the sunlight, the oxygen or the carbon dioxide because some of the components of the bottle have disappeared.

Here you have a photo that explained this change:

Here you have some photos which describe the evolution of the bottle:


  1. Hola J-C,

    I do not quite understand what is the reason for this brown colour in your sediment. Could you please explain? You mean it turned brown from black, correct?


    1. Hi Kostas. Well, I wanted to say that the bottle turned into a brown colour from black because I think that some of the components of the bottle has finished; such as iron sulfate, cellulose and so on and the bacterias have used another component. My idea is that the surface´s bacterias have caught the oxygen from the atmosphere and they have transported it to the rest of the aerobic bacterias.
      I hope I have answered to your question

      Bye Bye