Atlas of benthic diatoms in the upper Han River

Two Chinese colleague of mine, Dr. Xiang Tan and Dr. Yan Liu presented an atlas of epiphytic diatoms collected from the upper reaches of the Han River (central China) which […]

Marine Arctic Diatoms Workshop

The goal of the Marine Arctic Diatom working group is to improve the precision and reliability of quantitative diatom-based palaeoceanographic reconstructions in the Arctic and subarctic.

DIATOM RESEARCH: The diatom genus Humidophila

Humidophila delognei had been identified in the past as H. contenta, but this work provides analysis of the original type material of H. contenta.

Registration for the International Diatom Symposium is now open!

Please register for the International Diatom Symposium in Yamagata

European Diatom Meeting – Early Bird Registration

Reminder! The deadline for early bird registration is March 15.

Diatom Web Academy online seminars

The Diatom Taxonomic Certification Committee (TCC) is offering a webinar series to introduce key topics concerning diatom biology and application of diatoms to environmental science.

DIATOM RESEARCH: The type species of the diatom genus Chaetoceros

Chaetoceros is one of the most abundant and diverse diatom genera in the phytoplankton of the world’s oceans.

DIATOM RESEARCH: A new fossil marine diatom genus from Jutland (early Eocene)

Early Eocene diatomites of Mors reveals a new member of the Corethrales.

2023 International Diatom Symposium

The 26th International Diatom Symposium (IDS26) will be held in Yamagata, Japan, from 28 August-2 September 2023. Mark your calendars and plan to join us!

ISDR Working Groups

The The ISDR includes working groups that accomplish goals of our society. Working groups include council members and are open to all society members. What group would you like to join?

DIATOM RESEARCH: Paralia flatoniana sp. nov., a new species from the late Eocene of Texas with discussion on ecology and initial valves

During the Eocene, Gulf of Mexico and volcanism to the west provided a temperate coastal nutrient-rich shelf environment favourable for Paralia.

In memory of René Le Cohu

The International Society for Diatom Research lost one of our esteemed members, René Le Cohu.

DIATOM RESEARCH: Determining geographical range and alien status in diatoms

Three case histories are used to define a series of criteria for establishing geographical range and alien status in diatoms and other microalgae.

DIATOM RESEARCH: On the enigmatic diatom Rhizosolenia dubia, its relationship to Pseudopyxilla and Proboscia, and description of a new species, Proboscia pinocchioi sp. nov.

Our results suggest that the Pseudopyxilla frustule is the resting spore of a yet, unknown diatom, while the ‘rhizosolenioid’ valve represents the vegetative phase of a new species,

DIATOM RESEARCH: Drivers predicting biodiversity and community assembly of benthic diatoms in a karst spring environment

Diatom composition in springs is only weakly influenced by distance from other springs.