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!

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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, 2 November 2016

Winogradsky column



Team 9: Katerina Mironaki
             Levidiotis Charalampos

Greetings everyone,
In this particular experiment we will try to identify the observable differences between the two columns we constructed. Note that the columns were constructed as indicated. A bottle(1,5L) is divided in three equally sized layers: the bottom layer consists of mud mixed with nutritious ingredients, the middle layer solely of mud and the top layer contains water taken from the lake. The ingredients we used were small shredded pieces of newspaper and a whole egg as sources of carbon, sulfur and calcium. The difference between our columns is that the second one contains double the amount of paper and eggs. No other conditions differ.
The construction of the columns and the sampling took place in Lake Vrelli of Ioannina on 21/6/2016 at around 01:00 pm. The columns were later placed in the laboratory of the University.
The results we expect to gather in the course of the semester include a discernable growth spurt of microbes in the second column much sooner than the first one as well a more intense coloration of the column.      
         Below you can see photos of the two columns about one week after their construction:

                                                            Control column

                                               Column with doubled ingredients


  1. Now we need to explain the green and the black color of the water above the sediment...

    1. Well, to be honest the only answer we came up with is that the excessive sulfur in the column turned the water black, since it is the one that contains two eggs. Any other suggestions would be welcomed!