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, 7 April 2016

UCA_4A-7A_2: Day 35 - There is life!

Rio San Pedro sediment + 30g NaCl + filter paper+ 1.51g CuSO4
When the column is in the light side, we can observe that little seaweeds have grown up on the surface, while on the bottom, purples bacterias have shown up. Also, the iron oxide has increased his amount, the column is redder. And we can see a little sea snail moving, which proves that it is alive.
When the column is in the dark side, we note that the column is warmer than on the light side. If you look closely, you can appreciate oxide on the surface. At the bottom, we can see more iron sulfide than last week because of the next reaction: 
H2S + FeàFeS + H2
We can also see that there is something strange and black on the walls of the bottle, we do not really know what is it, but we think it could be some kind of oxide.

We have discovered that there is a dead worm that previously has done tunnels. Because the worm is dead, we suppose that this side is worse for life to be in.
We will come back the next week!
            Picture 1.                              Picture 2.      
                                                           Picture 3.
Picture 1: left: column in the dark side. Right: column in the light side, face of the light.
Picture 2: left:column in the dark side. Right: column in the light side, face of the dark.
Picture 3: column in the dark side.

1 comment:

  1. Excellent columns! So, you added 30 g NaCl in the sediment? That's a lot of salt!!! How does this compare with "non-salted" columns?