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, 23 May 2017

UCA_C2_2 - The process of our column

 A week after developing our Winogradsky column, we can start seeing important and different changes. First of all, fermenting cellulose bacterias have grown (corresponding to the black colour of the background). These bacterias might be the Clostridium genre. We can also see some grey parts due to sulphate reducting bacterias.
In the aerobic area, the top of the column, seaweeds may have grown so that they could produce oxygen after doing photosynthesis with the light the column receive everyday (the column is next to a window). This fact could be an explication to the bubbles we see at the top.
In the middle of the column there is no remarkable change. Here you have some photos to see all these changes and to follow better the evolution of our column.
Irene, Raúl and Nieves

1 comment:

  1. Hi,
    The black colour is due to precipitates of FeS being formed abiotically from the H2S produced by sulphate reducing bacteria (anaerobic bacteria that respire SO43- instead of O2 like us) and Fe2+ that exists in the sediment.

    Let's see how the column develops in the future.