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

Thursday, 1 June 2017

UCA_6B_2: The evolution of our column.

After two weeks in the our Winograsky column, we can see, on the top of the column, there are bubbles. This is due to this microorganism are aerobic organism and they produces oxygen. In this part. There are a Brown layer because of there are a lot of oxygen and there isn’t sulphur. However, in the middle of the column, may be bacterium which use sulphur and produce organic matter from CO2 .

            WEEK 2                                                                                                                WEEK 3

On the other hand, the bottom of the colum is a black layer that consist of bacterium. They use  sulphur to produc organic matter instead of oxygem. So they are anaerobic organism.


1 comment:

  1. Hi,
    I think there is a bit of a confusion with some concepts.

    First, bacteria are everywhere!

    Second, in the zones that are not black, probably there is still a lot of sulphate (concentration in seawater is around 25-30 mM). In contrast, where sediment is extremely black, it is likely that sulphate has been almost entirely consumed and has been converted to hydrogen sulfide.

    Third. "They use sulphur to produce organic matter instead of oxygen."
    If they produce organic matter they are autotrophic organisms, probably photosythetic. Whether they produce organic matter s not mutually exclusive with the release of oxygen. There are autotrophic microorganisms that release oxygen and others that release sulfate etc. But they all produce organic matter.

    Hope this is clearer now.