Revision of the needle-shaped Fragilaria species (Fragilariaceae, Bacillariophyta) in the Laurentian Great Lakes (United States of America, Canada)

Onderzoeksoutput: Bijdrage aan tijdschriftA1: Web of Science-artikelpeer review

  • Elizabeth E. Alexson
  • Euan D. Reavie
  • Bart van de Vijver
  • Carlos E. Wetzel
  • Luc Ector
  • Holly A. Wellard Kelly
  • Meagan N. Aliff
  • Lisa R. Estepp
We investigated several common, needle-shaped diatoms to better characterize the taxonomy of the genus Fragilaria in the Laurentian Great Lakes. We conducted diatom morphometric analysis facilitated by SEM and LM imaging on samples collected as a part of the USEPA's long-term biological monitoring program. We resolved several decades-long taxonomic problems in the Great Lakes. The results indicated that previous records of species formerly belonging to the genus Synedra, such as S. (Fragilaria) ostenfeldii, S. (Fragilaria) radians, and S. filiformis, should be corrected as these species likely do not occur in the Great Lakes. Valve morphology confirmed the presence of four previously undescribed species: Fragilaria andreseniana sp. nov., Fragilaria stoermeriana sp. nov., Fragilaria limnetica sp. nov., and Fragilaria michiga-nensis sp. nov. The morphology of several other Fragilaria taxa in the Great Lakes was examined, including a teratologic taxon (Fragilaria sp. 1), Fragilaria crotonensis, Fragilaria grunowii, and a taxon showing mor-phological affinity to Fragilaria lemanensis (reported here as Fragilaria cf. lemanensis). The spatial and sea-sonal distributions of these needle-shaped taxa were also analyzed and discussed.(c) 2022 International Association for Great Lakes Research. Published by Elsevier B.V. All rights reserved.
Originele taal-2Engels
TijdschriftJournal of Great Lakes Research
Nummer van het tijdschrift4
Pagina's (van-tot)999-1020
Aantal pagina's22
StatusGepubliceerd - 1-aug-2022


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