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

Saturday, 9 April 2016

UCA_GroupA2_Day 7_Rio San Pedro sediment + 1,5 g FeSO4 + paper_(column exposed to sunlight)

We prepared the Winogradsky column a week before from today, so we pick off it and we notice some changes.

We can appreciate that the column has divided in three parts, resulting an aerobic/anaerobic gradient. Different microorganisms grow up because of this gradient. 

  •  At the top of the column we can see that some algae have grown in the water. Nevertheless, they aren’t too much. These algae are aerobic microorganism, which are able to do photosynthesis.  The photosynthesis is a process conducted by plants and some microorganisms in which they use the solar energy and carbon dioxide in order to transform the inorganic matter, that comes from the bottom of the column, into organic matter and oxygen. 
  • In the middle of the column we notice that appears a dark brown colour with some red highlights. These highlights indicate the presence of purple non-sulfur bacteria in this part of the column.
  • Finally, at the bottom of the column we can appreciate a black colour. In this part there are anaerobic microorganisms that degrade the organic matter into carbon dioxide, which will be used by the aerobic microorganism at the top of the column.

1 comment:

  1. Do you have any pictures? How does your column compare with the one in the dark?

    Aerobic microorganisms use CO2 in what way? Can you be more specific?