Invisible to the naked eye but unique for Neotropical biodiversity

In this Diatom of the Month post we bring the topic of how organisms that are invisible to the naked eye contribute to regional biodiversity. In a recent open-access paper […]

Exploring new territories: sampling phytobenthos in large rivers

Freshwater phytobenthos comprises the algae that live on or are attached to surfaces of, for example rocks, macrophytes (vascular water plants) or sediment/sand grains of rivers and lakes (Figure 1). […]

The last story for 2020: experiences from a remotely organized diatom workshop

2020 has been exceptional due to the COVID-19 pandemic. As we all know, most meetings, conferences and workshops were either cancelled, changed to online events, or postponed to next year […]

Lesotho’s Lake Letsie and Aulacoseira granulata

Lake Letsie is the largest natural freshwater lake in Lesotho (southern Africa) and is situated within the Letseng-la-Letsie Nature Reserve, at an altitude of 2400m.asl. Isolated mountain lakes, like many […]

Embarking on the “100 Diatom Genomes Project”

Diatoms, a class of microalgae, are found in nearly all marine and freshwater habitats and are the most species-rich algal class, with at least 100,000 species. They are important to […]

What diatoms have we covered in 2015-2020?

DOM #59 might down as the shortest Diatom of the Month ever, so please do take a good look at our performance so far! Let’s see what diatom ‘characters’ have […]

Hidden Diversity in Pinnularia borealis, and Where it Lives

When we think about diatoms, we tend to imagine all kinds of aquatic habitats, ranging from oceans and coastal ecosystems, to lakes, rivers, ponds and puddles. However, soils and terrestrial […]

Food vs. Sex

**Spoiler: read the entire post before feeling attracted of scrolling down to watching the cool movies of Seminavis movement in the videos section** I am a microbe psychologist, a description […]

What is behind a name? Cutting a long story short: how one of the most common Gomphonema species turned out to be – not a Gomphonema!

Around 2005 we, the Diatom Research Group at the BGBM Berlin, cooperated with colleagues from the Georg-August-University Göttingen who wanted to identify diatoms and cyanobacteria using a predecessor method, today […]

Melosira westii

This month’s diatom story revolves around a centric species that tells us about a fascinating sea level change saga over the course of millennia. A thirteenth century story known as […]


Just over a year ago I had a stroke. It affected my speech and several times a day the nurse or therapist would check on my progress and have me […]

Antarctic diatom growth in a light- and iron-limited environment

Phytoplankton are the primary producers in marine and freshwaters and key components of ecological food webs. Their growth is often shaped by the presence of important resources, such as light, […]

Introducing the Diatom Web Academy, first of its name (that I know of)!

I currently have the fun and exciting role of serving as chair of the Society for Freshwater Science’s Diatom Taxonomic Certification Committee. The biggest motivation for this group is to […]

Decade in Review

Since our last post we welcomed in a new year and a new decade, so we want to take the opportunity to reflect on some of the great diatom science […]

Year in Review

December’s Diatom of the Month marks our 50th blog post! Thank you all for your continued support. This month we are reflecting on the past year and looking forward to […]