On the geographical distribution of Navicula nielsfogedii J.C. Taylor & Cocquyt

Abstract

Navicula nielsfogedii was recently described from tropical and sub-tropical Africa. New data on its distribution from several countries in Asia are provided in this paper, together with morphological observations and environmental information about the habitats where it was found. Since N. nielsfogedii was previously misidentified as Navicula heimansioides the morphology of both taxa is compared.

Keywords:

• Navicula
• distribution
• new records
• Asia
• Africa

Acknowledgements

We thank the staff of the Faculty of Biology, centre of collective usage ‘Electron Microscopy in Life Sciences’, MSU, Moscow, Russia, and Alex Ball, the Natural History Museum, London, United Kingdom, for their help with the SEM investigations of materials from Vietnam, Nepal and Wales, and Phil Brewin, formerly Cardiff University, for collecting diatom samples in the Makalu and Kanchenjunga regions of Nepal, and in the Pindari River valley in India.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The work of D.A. Chudaev was supported by the theme ‘Monitoring of the algal flora of certain regions of Russia as a contribution to a proper environmental management’ (AAAA-A16-116021660085-8) and by a Moscow State University Grant for Leading Scientific Schools ‘Depository of the Living Systems’ in the frame of the MSU Development Program. The work of A. Glushchenko and M. Kulikovskiy, investigations of diatoms from south-east Asia, field work and investigations in LM and SEM, was supported by the Russian Science Foundation [19-14-00320], and the manuscript preparation was carried out within the framework of the state assignment (theme AAAA-19-119041190086-6). The field work in Nepal by Ingrid Jüttner and Phil Brewin was funded by a UK Government's Darwin Initiative for the Survival of Species Grant awarded to Richard Johnson, Alan Jenkins, Institute of Hydrology, Centre for Ecology & Hydrology and Steve Ormerod, Cardiff University, and through a British Ecological Society Small Ecological Project Grant to Ingrid Jüttner.