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, 26 April 2016

Univ. of Thessaly, Group number 36 (Christomanos - Yfantis), Day 0-35, Incubation: Dark

Univ. of Thessaly
Group number 36 (Christomanos - Yfantis)
Day 0-35, Incubation: Light

The experiment started on 21/3/16 at Anauros beach. The protocol that we followed is shown below:
1) We took the sediment from the bottom of the sea and mixed it with a few pieces of newspaper and a broken egg with its shell.
2) We filled the 2/3 of a plastic bottle with the mixed sediment and filled the rest with sea water.
3) We covered the column with a trasnparent film and placed it behind a sunny window.

The first day the sediment had a light brown color and the water was light yellow (because of the broken egg).
As the days passed, the color of the sediment began to darken until it became black. On the contrary the water became lighter and after a period of 20 days it turned into purple red as a result of the photosynthetic microorganisms. At the same time the scent of the sample went from bad to worse.

Day 1

day 7

Day 14

day 21

Day 28



  1. Nice color, nice column! What type of photo synthetic bacteria are they?
    Wait and keep looking for green color appearing below the purple one.

  2. I think that sea water columns are doing better regarding purple bacteria than freshwater ones ... or not?