<abstract xmlns="http://www.w3.org/1999/xhtml">

The aim of this work was to present a morphological description and ecological characteristics of a rare species from the <italic>Gomphonema</italic> genus, occurring in calcium-rich waters, along with its new occurrence sites. The research was carried out in flowing waters of mountain and sub-mountain streams and rivers in Poland: the Wołosaty, the Wisłoka, the San and their tributaries. The occurrence of many rare and new to Polish flora species from the genus <italic>Gomphonema</italic> was recorded: <italic>G</italic>. <italic>cuneolus</italic> E. Reichardt, <italic>G</italic>. <italic>drutelingense</italic> E. Reichardt, <italic>G</italic>. <italic>innocens</italic> E. Reichardt,<italic>G</italic>. <italic>lateripunctatum</italic> E. Reichardt &amp; Lange-Bertalot, <italic>G</italic>. <italic>lippertii</italic> E. Reichardt &amp; Lange-Bertalot and <italic>G</italic>. <italic>calcifugum</italic> Lange-Bertalot &amp; E. Reichardt. These species occur mostly in alkaline or close-to-neutral waters with medium or low electrolytic conductivity (78–530 μS cm-1), low nutrient content and medium-to-high calcium ion content (12.4–76.4 mg l-1). Despite the rare occurrence in other parts of the world, the studied <italic>Gomphonema</italic> species has found favorable conditions in unpolluted and calcium-rich stream beds with flysch strata. The literature data define <italic>G</italic>. <italic>calcifugum</italic> as a non-calciphilous species, but this study shows that it can develop in a wide pH range and in calcium-rich waters.</abstract>

The aim of this work was to present a morphological description and ecological characteristics of a rare species from the Gomphonema genus, occurring in calcium-rich waters, along with its new occurrence sites. The research was carried out in flowing waters of mountain and sub-mountain streams and rivers in Poland: the Wołosaty, the Wisłoka, the San and their tributaries. The occurrence of many rare and new to Polish flora species from the genus Gomphonema was recorded: G. cuneolus E. Reichardt, G. drutelingense E. Reichardt, G. innocens E. Reichardt,G. lateripunctatum E. Reichardt & Lange-Bertalot, G. lippertii E. Reichardt & Lange-Bertalot and G. calcifugum Lange-Bertalot & E. Reichardt. These species occur mostly in alkaline or close-to-neutral waters with medium or low electrolytic conductivity (78–530 μS cm-1), low nutrient content and medium-to-high calcium ion content (12.4–76.4 mg l-1). Despite the rare occurrence in other parts of the world, the studied Gomphonema species has found favorable conditions in unpolluted and calcium-rich stream beds with flysch strata. The literature data define G. calcifugum as a non-calciphilous species, but this study shows that it can develop in a wide pH range and in calcium-rich waters.

Rare calciphilous diatoms from the genus <italic>Gomphonema</italic> (Bacillariophyta) in lotic waters of SE Poland

Podkarpackie Innovative Research Centre of the Environment

Oceanological and Hydrobiological Studies

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Rare calciphilous diatoms from the genus  (Bacillariophyta) in lotic waters of SE Poland

The aim of this work was to present a morphological description and ecological characteristics of a rare species from the Gomphonema genus, occurring in...

Rare calciphilous diatoms from the genus Gomphonema (Bacillariophyta) in lotic waters of SE Poland

Article Category: Original research paper

Publicado en línea: 13 mar 2018

Páginas: 27 - 40

Recibido: 23 jun 2017

Aceptado: 08 sept 2017

DOI: https://doi.org/10.1515/ohs-2018-0004

© 2018 Faculty of Oceanography and Geography, University of Gdańsk, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.