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, 4 June 2017



The Winograsky column constitutes a model of aquatic ecosystem where we can see the bacterial photosynthesis and the cycles of the sulfur produced by the metabolisms of the microorganisms that proliferate in it.

In our case, we made two columns from 60 grams of mud, 220 grams of sand and sea water. To prepare columns, we began by preparing an enrichment mixture with nutrients favorable for the development of microorganisms. This medium consisted of 1 gram of gypsum (calcium sulphate), since it is a source of calcium and sulfur, and 0.54 grams of dipotassium phosphate as it provides potassium and phosphorus.

Once this mixture was prepared, we separated in equal parts to created two columns which would be subject to different environmental conditions: one will be under direct sunlight conditions and the other one in darkness. After a few weeks we will return to visualize and comparte columns in order to observe if there are any differences between them.

In the next image we could see two columns, the one on the left was placed in the dark, and the one on the right was put in sunlight.

1 comment:

  1. So what is your hypothesis? Why did you use the specific compounds?