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

Tuesday, 22 December 2015

Winogradsky column, Department of Biological Applications & Technology, Ioannina

Hello everyone,
I'm Any Athanasopoulou from university of Ioannina in Greece. I received the mixture of water and mud from the bank of Voidomatis river (Voidomatis bridge) on 10.23.2015. My column also contains enrichment substrates, such as pieces of paper, 1 egg with its shell and 1/2 sachet of baking powder. First I made a mixture of the river mud, the enrichment substrates and water and put it in the bottle with a funnel (in order to cover 1/3 of the plastic bottle ). Then I added extra mud till 2/3 of the bottle to be filled and finally I filled up with water. Since my column was ready, I put it in the attic of my house, close to a western window, so that it's exposed to sunlight and room temperature (average growth temperature 20ο C). 

So far most of the water column is colored bright red probably by a large population of purple non-sulphur bacteria. I'm expecting growth inhibition of sample's psychrothropic bacteria, since the growth temperature is significantly higher than the river's cold water. At the expense of these is expected the developing of different varieties of bacteria, that are favored by this temperature change.

here is my bottle at the 8th week of the experiment:

and here is my bottle at the 13th week of the experiment:
where, we can see not only the red-brown colored water, but also a green zone developing at the upper layer of the column (probably cyanobacteria).


  1. Really nice! It is not very clear what you mean by '...above the photosynthetic bacteria...'.

  2. I meant that at the upper layer of the sendiment "under the water column" are photosynthetic bacteria, but, now I erase that...Cyanobacteria and algea are also at the water column.