Winogradsky column lab page!


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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, 10 April 2016

Universidad de Cádiz_GrupoB4B7_Entry 2 : Day 14

Good morning,

The first day we can watch that the water volumen has decreased a Little. There is an half an inch till the sedimentation starts.

In the parts of the bottle which is influenced by the light, if we watch from the bottom to the top of the bottle we can see a sedimentation. At the bottom there is a dark blue color. This color shows us that there were organic matter and calcium sulfate.

Above of the dark colors, we can see the iron (III) sedimentation of the orange color. At the top, we can find a brown color and small holes which are wrecks gases produced by cianobacterians formations.

We compare our bottle with the other bottle which is at the darkness.

At first sight, this bottle which was at the darkness is grey and smooth.

We can find three zones. At the top, the water is cloudiness due to the oxygen which comes and reacts with the organic matter and this produces water and carbon dioxide.

The second zone, we can find a very little brown layer, which is in contact with the water. It
is result of iron oxide.


The third zone is the biggest one and it is dark grey smooth, although at the bottom of the bottle we watch some zones darker than the others. Is due to the iron (II) which reacts with sulfhidric and it produces  iron sulfur (II). It has a black color.



The bottle on the left is the one about which the darkness has influenced. However, the bottle on the right is the one about which the light has influenced.

More information in the next post.







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