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

Tuesday, 6 June 2017

Following weeks of our Winogradsky Column. Group A5

Week 1 (3-22-17):

The side of the column that recieved the sun light is green. It is due to the growth of cianobacteria which are photosynthetic microorganism and use the light to synthesize organic matter. There weren't any bubbles or breaks what means there wasn't methane. This absence of methane is because we didn't use a large amount of organic matter (paper). Another sign of that is the lack of grey matter at the bottom of the column.

Week 2 (3-29-17):

The past week we covered almost all the column with foil in order to reduce the amount of photosynthetic microorganism and to stratify the column. Our objective was a succes as the number of cianobacteria were reduced due to the lack of light and consequently, the fall in the photosynthetic activity. The methane continued not to being a problem. The water was muddy and some bubbles started to rise (probably they were oxygen or methane).

Week 3 (4-19-17):



Last week we removed the foil to let the cianobacteria grow again. Also, we put at the opening of the column a transparent cover (paraffin) and made a hole in it. It started to grow some red bacteria where the microalga were growing and in the part of the column where there was no oxygen too. It is probably a facultative bacteria, which can live with or without oxygen depending on the amount of it. There weren't any cracks or big methane bubbles in the medium but there was a grey stratum at the bottom, composed by organic waste (produced in the chemical reactions of the microorganism).

1 comment:

  1. "bubbles (probably they were oxygen or methane)." BIg difference if they are one or the other... what do you think they are? adnd what produces them?

    "It started to grow some red bacteria". What are these orange bacteria?