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

Thursday, 7 June 2018

UCA_A4_A3_day85

-COLUMN THAT WAS IN THE DARK:
We can see that all the column is darker, this is because have increased the number of anaerobic microorganisms, since they have carried out a respiration with sulphate, releasing H2S, which precipitates with iron, producing a black FeS compound.
Also, previously we had a gas bubble in the middle of the column, and now we haven´t it, this may be due to the weight of the land has elevated it to the top of the column. •

-COLUMN THAT WAS IN THE LIGHT:
In this case, the column has more than one colour, the column has more than one colour, we can see that there are areas that predominate the black colour by the same phenomenon that we explained before, due to the precipitation of FeS produced by the anaerobic respiration of some microorganisms. 
There are small areas of the column that have an orange colour, produced by photoheteroorganotrophic microorganisms such as Rhodospirillum. 
Finally, comment that there is a small gas bubble, this can be methane, carbon dioxide or even sulfuric acid. 

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