Council members are elected members of the society.

The Council

Rosa Trobajo

President, 2021-2024

IRTA, Sant Carles de la Ràpita
Crta: Poble Nou, Km 5,5 43540 Sant Carles de la Ràpita
Catalonia, Spain

My research focuses on the benthic diatoms of Mediterranean rivers, coastal lagoons and estuaries. I'm particularly interested in the factors and processes affecting diatom communities and their distribution in these environments, and also in their use to track environmental changes. I'm also using culture and molecular data in order to improve the taxonomy and to better understand the ecology of selected common species that play a key role in these systems. Recently we have initiated research into DNA metabarcoding in which we are collaborating with several other European research groups.

Sarah Spaulding

Vice-president 2021-2024

US Geological Survey / Institute of Arctic and Alpine Research
University of Colorado
Campus Box 450
Boulder, CO 80309-0450 USA

I am interested in taxonomy, paleoecology, systematic, assessment and biogeography of diatoms. My research is directed toward understanding diatom biology and the ecological roles of diatoms on the planet. I am passionate about sharing diatom taxonomy and ecology with scientists, students and the public. I currently serve as the Chair of the Editorial Review Board for collaborative, electronic, peer-reviewed flora, Diatoms of North America.

Richard Jordan

Past president, 2021-2024 & convener IDS 2021/22

Department of Earth and Environmental Sciences
Faculty of Science,Kojirakawa-machi 1-4-12,
Yamagata University,
Yamagata 990-8560, JAPAN

My research on fossil marine diatoms is focused on (1) taxonomy and morphology (including evolutionary trends), and (2) palaeoenvironmental reconstruction. These topics are not constrained by a particular time, space or diatom lineage – although there has been a recent shift towards Miocene studies. On the other hand, my research on living marine diatoms focuses on biogeography and ecology, notably of marine lakes and coral reefs. I have a broad interest in taxonomy, but have concentrated on Proboscia, Rhizosolenia, Paralia, Thalassiosira, Actinoptychus, and Rouxia. Apart from diatoms, some of my students are also studying haptophytes, silicoflagellates, parmales, ebridians and sponge spicules.

Dr. Anrich Kock

Early Career Representative 2021-2024

Postdoctoral fellow at the North-West University in South Africa
Unit for Environmental Sciences and Management
North-West University
South Africa

Currently my research focus is on the South African National Diatom Collection where I work to further broaden our understanding of the taxonomy of endemic diatom species. I am also involved in the training of MSc students on diatom ecology and taxonomy, as well as supervising of an MSc student. My research have mainly focussed on freshwater (rivers and wetlands) diatom ecology, ecotoxicology, paleoecology and taxonomy. My research mainly focuses on diatom ecology and ecotoxicology, with ecotoxicology at the centre of my research where I study the effects of different chemicals on diatom morphology and vitality.

Andrea Burfeid Castellanos

outgoing Early Career Representative 2021-2024

University Duisburg-Essen
Universitätsstr. 2
45141 Essen

My studies have been focussed on freshwater and river diatom taxonomy and ecology, with emphasis on diatoms from intermittent rivers and ephemeral streams. I am currently also looking into the interaction between marine, epiphytic diatoms and their macroalgal basibionts. I have started investigating them through a project with Antarctic specimens. I hope that, with the help of this website, Early Career Researchers will find a platform to communicate and network with fellow diatomists.

Eileen Cox

Editor, Diatom Research

Natural History Museum,
Cromwell Road,
London, SW7 5BD, UK

Head of Postgraduate Studies at the Natural History Museum, London, with responsibility for the support, training and development of PhD students in the museum. Having worked in universities and research institutions in both UK and Germany, her research interests focus on the systematics of naviculoid diatoms, but have included life history, ecological and morphogenetic studies and their relevance to character evaluation.

Ingrid Jüttner


Amgueddfa Cymru - National Museum Wales
Department of Natural Sciences
Cathays Park
Cardiff, CF10 3NP
United Kingdom

I work as a researcher in diatoms at the Department of Natural Sciences, Amgueddfa Cymru - National Museum Wales. Diatom applications in environmental assessments of freshwaters and taxonomic, ecological and biogeographical studies of the diatom floras of Britain and Ireland, the Falkland Islands and the Himalaya are the core of my work. I am currently involved in projects on stream ecosystem restoration in England and Wales, effects of warming and pollution on freshwater ecosystems in Wales, and on lakes in the Nepalese Himalaya.

Keely Mills


British Geological Survey
Nottinghamshire NG12 5GG, UK

Working as part of the International Team (BGS Global), my day-to-day work is diverse: undertaking geoscience research, the development, management, and execution of new integrated research to address development priorities (UN’s Sustainable Development Goals), and leading and contributing to science professionalism both within BGS and externally (ethics, and equality, diversity and inclusion). At heart I am a palaeolimnologist and diatomist whose research interests are centered on understanding the impact of people and changes in hydro-climate on water quality and quantity in tropical regions. I am currently involved in a number of projects in Uganda, Kenya, Malaysia, and Australia. As part of the ISDR I serve as Honorary Treasurer, looking after the Society’s accounts and dealing with membership subscriptions and queries.

Regine Jahn

Convenor IDS 2018

Botanischer Garten und Botanisches Museum Berlin-Dahlem
Freie Universität Berlin,
Königin-Luise-Straße 6-8
D-14195 Berlin, Germany

Regine Jahn was head of the Diatom Research Group at the Botanischer Garten und Botanisches Museum, Freie Universität Berlin, until March 2019. The group does research in taxonomy, phylogeny and ecology of diatoms. Currently, they are part of the research project German Barcoding of Life. In addition, they are running the algae registration project PhycoBank and the information system AlgaTerra. Geographic focus of their biodiversity research is Germany, Mexico and Korea. The group also organized the 25th International Diatom Symposium which was held in Berlin from 25 - 30 June 2018.

Mark Edlund

Council Member 2021-2024

St. Croix Watershed Research Station
16910 152nd St. N.
Marine on St. Croix MN 55047, USA

My research interests center on the use of diatoms in paleoenvironmental reconstruction, biomonitoring, taxonomy, and life history strategies. I also co-teach the long-running Ecology and Systematics of Diatoms class at Iowa Lakeside Lab each summer. In addition to serving on the ISDR Council, I was an associate editor of Diatom Research for six years and hosted the 21st IDS in Minnesota. I’ve been a member of the ISDR since 1987, when Frank Round personally sold me on joining the brand new society!

Paul Hamilton

Council Member 2016-2020

Canadian Museum of Nature, 240 McLeod Street
Ottawa, Ontario K2P 2R1, Canada

I work primarily in water quality research, microscopic life and diversity, areas of hot spots in global biodiversity and climate change. My research interests vary from organic and metal contaminates to fatty acids in the natural environment and algae. Research in taxonomy and systematics covers many diatom groups, using a wide selection of metrics including single cell DNA studies.

There is a hidden world of life (microscopic life) waiting to be explored. Imagine having the opportunity to make this trek in the exploration in Canada and around the world, freshwater and marine. We have a lot to learn about life from this wonderful world of the microbes and I wish to be part of the journey.

Maria Kahlert

Council Member 2018-2022

Swedish University of Agricultural Sciences
Department of Aquatic Sciences and Assessment
PO Box 7050, SE- 750 07 Uppsala, Sweden

My research interest are freshwater benthic algae; their biodiversity, regulation by environmental factors, and algae as biomonitors in lakes and streams. I work with diatoms, but also on other algae. My special interest is the harmonization of methods to make data and results comparable, and I have in this context recently started with DNA barcoding. I am born in Germany and did my university education in Cologne, then moved to Sweden (Uppsala) for work.

Martyn Kelly

Council Member 2018-2022

Bowburn Consultancy

Martyn is an environmental consultant with 25 years’ experience developing algal-based methods for ecological assessment of freshwaters. He has worked extensively on implementation of the Water Framework Directive in Europe and, recently, started to explore the potential of metabarcoding. He has over 100 publications in peer-reviewed publications and is an editor of Freshwater Benthic Diatoms of Central Europe. He is an Honorary Professor in Geography at Nottingham University and, in addition, has a degree in Fine Art. His blog,, attempts to explain the world of microscopic algae to non-specialist audiences.

Bart Van de Vijver

Council Member

Botanic Garden Meise
Research Department
Nieuwelaan 38
1860 Meise

Bart Van de Vijver started his research at the University of Antwerp studying the use of diatoms as bioindicators in Belgium. Very soon he shifted his research interests towards morphology, taxonomy and biogeography of non-marine diatoms in the Antarctic Region. Since 2006 he has a permanent position as senior researcher at the Botanic Garden Meise (B) which he combines with a parttime professorship at the University of Antwerp (B). Although his main research is focused on freshwater and terrestrial diatoms, he recently got involved in an international project studying epizoic diatoms on sea turtles worldwide.

Shinya Sato

Council Member

Fukui Prefectural University
Department of Marine Science and Technology
1-1 Gakuencho, Obama, Fukui 917-0003, Japan

My research interests lie primarily in the area of life cycle of diatoms, in particular, sexual reproduction and auxospore formation. Along with classical approaches using various microscopies, I try to use genomic and transcriptomic data to better understand the evolution and diversity of their life cycle strategies. I'm also currently working on valve morphogenesis, morphological plasticity, organellar genome inheritance, and phylogeny of different groups of diatoms. I had stayed in Germany for my PhD degree, and then moved to Scotland for my postdoc project. After 8 years stay in Europe I returned to Japan, and since 2014 I started working at the current university.