Showing posts from July, 2018

Diatom of the Month – July 2018: Ecological uniqueness of diatom communities

by Annika Vilmi*
Humans have altered their surrounding environment to a degree that we are now living in a new geological epoch, the Anthropocene (e.g. Lewis & Maslin 2015). Freshwater ecosystems are among the most severely threatened environments by human activities, such as land use changes, pollution, dam construction, and greenhouse gas emissions causing climate change. Freshwater biodiversity thus suffers from human actions, being a global and urgent problem that needs to be addressed (e.g. Dudgeon et al. 2006). One of the most common groups of organisms in aquatic systems are diatoms, unicellular algae encased in cell walls made of silica (Fig. 1). Diatoms, like many other algae, photosynthesize: they utilize carbon as energy whilst producing oxygen. These algae also offer resources and habitats to other organisms. For example, they are eaten by invertebrates that are in turn eaten by fish that then enter human diet - we all know people who just love to go out and do some fis…

A little diatom story- Quest for a family - 3rd prize of the Speedtalks at the IDS Berlin - Lina Ahn Van


Big news! CONTEST: We are searching for a new logo for the International Society of Diatom Research

Dear fellow young diatomists,

Our parent organization, the International Society of Diatom Research (ISDR) is looking for a new logo. And the decision has been to start a contest. Please feel free to participate if you are a creative young diatomist.

What you need: an idea to represent what the ISDR means to you in a picture/infography that is informative to the non-knowing. Be creative! After those Speedtalks at the IDS, we know you are!we recommend that you WATERMARK YOUR DESIGN, so that people know whose it is and so it will not be used by other people unknowingly. Send your design to our email ( in a vector style graphic. It will be used in publications, media and so on.DEADLINE is on October 31st 2018.
The images will be published in THIS BLOG using a google form so that people can vote for the best design.  The prize is a free registration to the next IDS meeting in Yamagata 2020!

Young Diatomists Challenge: Diatom microscopy images for a book for 9-10 year old children

An exciting new project awaits those interested in sharing and increasing the visibility of our beloved (and sometimes dreadded), but always beautiful diatoms. Emanuela Samaritani is preparing a series of science books for 9-10 year old children. Most of it will be illustrated by a professional illustrator, but for the end of the book about diatoms, Emanuela has asked us to make pictures of diatoms available to her. We would need some light microscopy pictures of both freshwater and marine diatoms from different locations, but mostly images of particular species. All images will be duly credited and those of you who participate could get one of the wonderful copy of the book.
If you are interested, please contact the young diatomists email.

International Diatom Symposium 2018

The International Diatom Symposium started on June 25th in Berlin. A first keynote by Peter Kroth of the university of Konstanz set the tone talking of diatom physiology-ecology and the relationships of the bacillariophytes and their xenic cohabitants. It was followed by a keynote given by Niels Kröger about silica-formation in diatoms. Postersessions were held in the afternoon. The Symposium was structured into a taxonomic and phylogenetic main day on Tuesday, followed by a day dedicated to these topics in addition to diatom biogeography, Thursday contained presentations around bioindication (morphological and metabarcoding) and Friday was dedicated to paleoclimatology and brackish and marine environments, that were given in parallel sessions.

Young diatomists participated not only in the symposium (winning the student talks and posters, for instance), but also by having a joined meeting and several after-symposium activities. The speedtalks, that were made on Thursday and were …