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, 5 June 2018

Day 45.  UCA. Rio San Pedro sedimentWinogradsky columns C2 and C3.

Today, 5th of June many different types of mycroorganisms can be seen inside the columns. Those mycroorganism has been living and multiplying since March in two different life conditions:

-In an illuminated environment, we can see many dark stains with a colour between blue and grey in the bottom of the column. Those stains are formed by anaerobic bacteria that breathe with H2S.
In the middle of the column, an orange stain can be seen. This stain is formed by Rhodospirillum, photohertroorganotrophic organisms.
Finally on the surface of the column we can see many green stains, that are cianobacteria and algae.

- In a dark environment, we can see in almost all the column a really big stain with a dark colour between grey and blue. This stain is formed by anaerobic bacteria that breathe with H2S bacteria. On this stain, we can see some orange stains, that are formed by Rhodospirillum, photohertroorganotrophic organisms bacteria.

According with those results, we can declare that in those different life conditions, we can see the same type of mycrooorganisms in both colums, except, that we cannot see photoautotrophic mycroorganism in the dark enviroment, because those mycroorganisms need light energy to live.

Light environment
Dark environment

1 comment:

  1. How is it possible to have photoheterotrophs growing in the dark?