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

Wednesday, 11 May 2016


Rio San Pedro sediment + filter paper

Day 49

Hello there,

Since the last post a lot of time has passed by, so that the development of one bottle is considerable advanced. The `darkness bottle´ presents almost the same aspect, it´s means that black zones, caused by sulphate-reducing bacteria, have spread to more areas of the sediment.

Meanwhile, the `light bottle´ has undergone a growth of new life. In the bright side, cianobacteria have appeared all over this wall, as well as in the superface. Due to these photosynthetic microorganisms, it shows green coloration and O2 realising. At the bottom of the bottle, where most sulphate-reducing bacteria develop, new living microorganism have grown up too: sulphate green bacteria have appeared causing green coloration (as they are photolitoautotrophic) and sulphate reddish bacteria have allowed to observe red small zones. The limits between the light and shadow side of this bottle continue to differentiate through reddish lines of oxidation.

Comparision between darkness (right) and light (left) column.

This is our light column development:
Light side
Comparision between shadow and light sides

  Sulphate green bacteria
and sulphate red bacteria
 Cianobacteria and O2 realising in `light bottle´

We'll come back soon!!

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