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

Saturday, 14 May 2016

Univ. of Thessaly, Group number: 21 (Papakonstantinou Angeliki & Paschou Maria), Day number: 44, Incubation: Light

Returning with further changes in our Winogradsky column, the following observations have been made:

On day 25 (15/4/16 - Pic. 1) the top layer of the liquid phase had a thicker crust of calcium carbonate. Also, a light purple color has been noticed in some parts of the liquid phase (Pic. 2) which indicates the appearance of anaerobic purple photosynthetic bacteria (e.g. Chromatiom).

                        Pic.1                                        Pic.2

After three days, on day 28 (18/4/16), the whole liquid phase gained a purple color, as well as the upper layer of the solid phase (Pic. 3). The purple bacteria’s quantity in the solid phase has been increased after 5 days, on day 33 (3/5/16) and the liquid phase had a lighter purple color (Pic. 4).

                       Pic.3                                                 Pic.4

On day 39 (9/5/16) the color of the column became crimson, as well as half of the solid phase did (Pic. 5).


Today, on day 44 (14/5/16), the color of the solid phase is much darker than the rest of the column (Pic. 6).


We will inform you as soon as we see any new changes.


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