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

Friday, 16 June 2017

Fifth week, group 1B

Here's our last post about our Winogradsky column, in which we will comment the overall changes we have seen in the total of five weeks.  
In this first picture we can see that the bottom layer, where the anaerobic bacteria habitate hasn't changed a lot, it only got darker (probably due to the accumulation of organic matter). 

On the other hand, the rest of the column has experienced some changes.We can now differentiate some reddish threads, which we suppose are created by the iron oxidazing bacteria living in this layer. We also have to mention how this reddish-brown layer has increased its size. 

The top layer has also experimented an increase in its size, and we can now appreciate a bigger amount of green algae growing on the top layer of the column. We can also see some little air bubbles which are probably caused by the activity of the aerobic bacteria that live in this upper layer. The change that surprised us the most in this week's update of our column was the appearance of a couple of little hermit snails living a the top of the column.

So here concludes the following of our Winogradsky column.

1 comment:

  1. "reddish threads, which we suppose are created by the iron oxidazing bacteria living in this layer"... Actually they are purple non sulfur bacteria...

    "air bubbles which are probably caused by the activity of the aerobic bacteria" What are these gas bubbles? You say you have algae growing there. What would they produce? And what would aerobic bacteria produce?