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, 14 June 2016

Universidad Cádiz_Grupo A6A3_Entry 4: Day 54- The Dawn of the Bottle of the Microorganisms

As we have become fond of our microorganisms, we decided to keep both bottles in sunlight, so the light-dependant microorganisms don’t die.

We can differentiate three parts in the column:

• The first zone consists of the water area and the soil’s surface. The white algae has colonized the entire surface and grown in height. The snails still coexist happily with them
• The second zone, which is the combination of the previous S1 and S2 zones (as they have practically merged together), has a greenish colour on the “Sunny Side”. The population of green bacteria has grown exponentially, possibly because the nutrients it feeds on are excreted as waste from surrounding microorganisms. We also consider this area as a production zone for nutrients for the column, as the green bacteria and algae perform photosynthesis. This allows the organisms found in the zone immediately above to use the oxygen produced. The orange area has remained stable.

• The S3 part has become darker, as all the oxygen that might of have been trapped there has finally disappeared, giving way to a complete anaerobic environment. Here, bacteria that produce FeS can thrive (as long as they don’t receive any direct sunlight).


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