Meetings, conferences, symposia, and workshops from around the world related to diatoms are posted here. Contact us to include your event.

North American diatom symposium in Brazil, Indiana

The 26th NADS will be held on September 21 – 25, 2022 at Indiana State University’s Sycamore Outdoor Center in Brazil, Indiana. Sycamore Outdoor Center is a multi-use outdoor facility designed to accommodate educational and recreational programs for campus groups and the community at large. The Sycamore Outdoor Center is 80 acres of woods, trails and lakes located approximately 18 miles east of Terre Haute. It is administered through Indiana State University’s Department of Kinesiology, Recreation, and Sport. The Outdoor Center consists of eight lakes, which are fed through an underground water supply and cover 42 acres and several acres of wooded land. International symposium participants will present their work in diatom research including biodiversity, evolution, ecology, systematics, biological assessment, paleolimnology, and nanotechnology. In addition to the scientific program, the meeting will include traditional NADS activities (the Scum Run and auction). We hope you will join us in Brazil in September for an exciting meeting!

Convocatie Nederlands-Vlaamse kring van Diatomisten (NVKD)

06–08/10/2022 Edam (The Netherlands)

More information: Bart Van de Vijver (

The annual conference of the Nederlands-Vlaamse kring van Diatomisten (NVKD), the Dutch-speaking diatomist association, will take place in Edam, in the middle of The Netherlands. This year, the company Waterproef will be in charge of the organization. This meeting brings together researchers from Belgium and The Netherlands working on all aspects of diatom science: paleoecology, morphology, taxonomy, ecology, physiology and water quality monitoring. The language at the meeting will be mostly English although Dutch lectures can also be held.

On Thursday 06th of October 2022, a full-day taxonomic workshop will be organized dealing with the most recent results of the revision of the genus Fragilaria (group of F. gracilis, rumpens and vaucheriae). Price of the workshop is € 175.00 per person. On Friday 07th of October, the lecture day will be held with a key-note lecture by Dr J. Patrick Kociolek and several talks by PhD students and young post-docs. The day will be closed by a gala dinner offered by NVKD in honor of the 35th anniversary of the Association. Finally, on Saturday, a short half-day excursion is organized visiting a nature reserve in the surroundings of Edam. Lecture day and excursion are free of charge.

Joint IPA-IAL 2022
The IAL IPA Joint Meeting 2022 will take place from November 27th to December 1st in Bariloche, Patagonia, Argentina. It will be an in-person event but with some streaming options for people who cannot attend the meeting in person. A new conference website has been launched and the call for sessions is now open. We hope as many of you as possible will be able to join us. The goal of the IAL IPA 2022 joint meeting is to celebrate research on lakes from multiple perspectives with a focus on the sediment record as both an Earth System Archive and a social and cultural memory of the landscape. This conference aims to bridge the gap across a broad range of disciplines that work within the overarching theme of Earth System and Climate-Environment-Cultural changes. The conference includes 4 days of oral and poster presentations, social events, conference courses, fieldtrips and beautiful landscapes. The registration fee includes ice-breaker, mid- conference activities, coffee breaks, lunchs and …yes ! the conference dinner.

14th European Diatom Meeting

09-11/5/2023, Meise Botanic Garden (Belgium)

Organisation & Information: Bart Van de Vijver ( & Charlotte Goeyers (

Website: will be announced in fall 2022

The 14th European Diatom Meeting will be organized from 09-11/05/2023 at Meise Botanic Garden (Belgium). After the successful online meeting in Cardiff in 2021, we hopefully all look forward to meet each other again on a physical meeting.

The European Diatom Meeting originally started as the Treffen Deutschsprachiger Diatomologen (DDT) and was transformed in 2007 into Central European Diatom Meeting with a first symposium organized in the Botanic Garden of Berlin. It brings together scientists from all over Europe and further afield to discuss a broad range of topics in diatom research: morphology, taxonomy, biogeography, physiology, (paleo)ecology of terrestrial, freshwater and marine diatoms. The meeting will be organized in memory of our dear friend and colleague Luc Ector who organized the (C)EDM meeting in 2019 in Luxemburg, and who suddenly and too early passed away in April 2022.

Meise Botanic Garden, located just north of Brussels, is one of the leading botanical institutes in Europe. It hosts the world-famous Van Heurck diatom collection, one of the 10 largest diatom collections of this kind in the world. The meeting will take place in the historic Castle of Bouchout, situated in the middle of the 92ha large garden. Keynote lectures, oral and poster presentations are scheduled for Tuesday 09/05 and Wednesday 10/05 2023. The meeting will be followed on Thursday 11/05 by a one-day taxonomic workshop on the European species of the genus Brachysira.

Social events include a beer-tasting with Belgian beers, organized in the famous Plant Palace, the 1 ha large greenhouses, and a barbecue in the castle.

ASLO Aquatic Sciences Meeting 2023 in Palma de Mallorca

Resilience and Recovery in Aquatic Systems

Concepts of resilience and recovery do not only apply to aquatic ecosystems but also to societies when faced with disruptions and crises. Past events have shown that adaptability and decisiveness are important keys to resilience and recovery. Disruptions are opportune moments for setting up strategies for management and recovery. Faced with the COVID-19 pandemic, ASLO meetings have adapted by transforming the ASM 2021 Palma meeting to virtual with a positive attitude that in 2023 we will recover and meet in-person. Positivity is also an important factor.  We do not dwell on problems, but we try to look for solutions and get united for whatever crisis we face.  

We will incorporate the theme of resilience and recovery in aquatic systems into the plenary sessions and encourage submissions that examine these topics and invite you to contribute special sessions on topics relevant to freshwater and marine ecosystems.  

Initially this meeting was scheduled to be held in Palma in 2021, but due to COVID-19, it became necessary to hold the ASLO 2021 Aquatic Sciences Meeting virtually.  However, we plan to meet in Palma in 2023.   

(from their website)


We’re absolutely delighted to announce that the Freshwater Biological Association (FBA) will be hosting SEFS13 from 18th – 23rd June 2023 in Newcastle Upon Tyne, England.

Following on from the success of SEFS12, which was an entirely virtual event due to COVID19
travel restrictions, we are excited to be able to offer the opportunity for delegates to physically get together, collaborate and network for the first time in four years. With this in mind, SEFS13
promises to be a symposium like no other, and without doubt, a cause for celebration! To say we’re excited, is an understatement!

(from their website)

The theme of the congress is “a Mediterranean perspective on Quaternary Sciences” since the Mediterranean region, so geologically young and active, is the ideal place where to discuss the processes and events that shaped the landscape, the environment and the ecosystems in the last 2.58 million years.

From the glacial systems in the Alps to the desert facing the southern shore, from the large coastal plains and deltas to the rocky coasts where the mountain ranges reach the sea, from the karst to the lacustrine to the volcanic environments, almost all of the Quaternary features are present in the region.

Follow information on twitter @mldiatoms

The original 26th diatom symposium in Yamagata, planned for 2020, will be held there in 2023. Stay tuned for more information.

15th European Diatom Meeting

The 15th European Diatom Meeting at Lake Ohrid, North Macedonia, has been postponed to 2024. Lake Ohrid, a deep and ancient lake of tectonic origin, is a unique refuge for numerous endemic and relict freshwater species of fauna and flora, and the town of Ohrid is one of the oldest settlements in Europe and a major cultural centre.

The main topics of the meeting will be climate change and paleoecology, biomonitoring, evolution, phylogeny, systematics, taxonomy, biogeography, ecology, and diatom applications.  

For further details please visit   



2024 International Botanical Congress

We are delighted and deeply honored to announce that the next International Botanical Congress ―the 20th IBC— will take place in Madrid (Spain) on the following dates:

Nomenclature Section, 15–19 July 2024
Congress, 21–27 July 2024

The IBC takes place every six years under the supervision of the International Association for Botanical and Mycological Societies (IABMS). The 20th was scheduled to take place in 2023 in Brazil after Shenzhen’s (China) 2017. Unfortunately, the difficult situation caused by the worldwide pandemic has made impossible to organize this big event in Brazil in 2023.
Rooted in the tradition of Systematic Botany, the IBCs have enlarged their scope over more than a century to become an integrated forum for knowledge on the plant and mycological world. Please take a look at the broad scope of topics that we hope to include in this upcoming IBC in this site.
The Congress will include plenary lectures, concurrent symposia ―for which we will ask for proposals in Spring 2022—, posters, exhibitors, as well as short courses and workshops.
We wholeheartedly invite all the botanical community worldwide to come to participate in the 20th IBC and enjoy, in Madrid, the privilege of sharing research, knowledge and experiences with colleagues and friends from all over the planet. We will make efforts to provide the best environment for such a thrilling experience.
A suite of post-meeting excursions will be offered for attendees to visit places of botanical and cultural interest. See the preliminary list in this site.
We look forward to seeing you all in Madrid in July 2024.

Kind regards,
The Organizing Committee of the 20th IBC