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

Thursday, 19 March 2015


Hi everyone!

We are three students of Biotechnology in the UCA and this is our first post about our Winograndsky column.

We made the Winograndsky column on Tuesday, 3rd March in the microbiology laboratory. For that, we filled 2/3 of an Aquarius bottle with muddy sediments from San Pedro River, mixed with CaCO3, FeSO4 and paper (cellulose), as a source of carbon for autotrophic microorganisms. After that, we added two centimetres of water.

This project last 8 weeks, so we take turns to have the bottle every, although we’re going to change that from next week and we’re going to take turns every two weeks to not move the bottle to much. The first week I had the bottle and the second week Esperanza had it.

1st WEEK (3rd – 10th):  The early days mostly part of the water was on the surface and appeared small white worms in the mud, but after three days they died. The fourth day I saw small clams on the surface and a red zone at the top of the mud on the sun side of the bottle and small black points in the lower part of the mud, mostly on the sunside but there was also on the dark side. They are maybe bacterias. Here there are some photos of the bottle during the week:

2nd WEEK (11th- 17th): As we can see, the bottle isn’t directly expose to the sun and some days like last week were cloudy, cold, and even some days rained so the microorganism didn’t grow up so much. This week, the surface tuned out red and we could see some gas bubbles. We think the bubbles are perhaps oxygen bubbles from autotrophic microorganism. The last days of the week appeared some small seaweeds too. Here there are some photos:


Dark side

Sun side


  1. Column looks good!.

    It seems to me that the your water column is a bit larger than 2 cm, no? :-)

    One corrections. Cellulose is not a source of C for autotrophic microorganisms. What is?


  2. So many changes in such a little while...Your colleagues had a yellow sediment, you have yellow water! Why?