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!

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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

Monday, 23 April 2018

UCA_5A_6A_7A: Day 44 Winogradsky column´s evolution after a month

Winogradsky column´s evolution after a month:

We are back again, and now, we are going to show the changes in our columns:

5A Winogradsky Column:

The group 5A let his Winogradsky column in an illuminated environment, and after one month, we can observe that there is a colour variation at the top of the test tube because it has acquired a red tonality in the liquid part. The solid part doesn't have colouring. It is quite reasonable, since we put a lot of N and S sources into the tube, therefore, there are a lot of anaerobic bacterias, which are responsible of the colour variation. Since the amount of anaerobic organisms is incredibly big, there aren't any kind of  aerobic organisms in our test tube.

6A Winogradsky Column:

The group 6A let his Winogradsky column in a dark environment, and after approximately 30 days, the column is a little bit darker. But it continues with a little brown part at the bottom, we think it's because there aren't too many nutrients, or it will be because in that zone has grown another variety of bacteria. Throughout the column we can observe various black points and it could be accumulations of bacteria.

7A Winogradsky Column:

The group 7A let his Winogradsky column in an illuminated environment. We have observed changes after a month. The side of the column, in which the light does not reach, has a grey colour produced by anaerobic bacterias. Also, the column has a red colour in the middle. We think it may be produced by aerobic bacterias, which produce a substance with this colour. Secondly, we noticed more bubbles produced with the CH4 that bacterias expel out. Finally, we conclude with a general development of aerobic and anaerobic bacterias through the column along this month, in a way that we expected.

6A Winogradsky Column

7A Winogradsky Column

5A Winogradsky Column

1 comment:

  1. What are the bacteria that you have in column 5A? What are the black spots in column 6A?