Achnanthales from historical Grunow collection in Porto Subzanski, Croatia
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Catherine Riaux-Gobin
Catherine Riaux-Gobin is “Chargé de Recherche CNRS, Retired position” at CRIOBE (PSL Research University: CNRS-EPHE-UPVD & Labex “CORAIL”, Perpignan, France). Her main research interest is in polar oceanography and ecology (land fast-ice diatoms, Antarctica). Her more recent research has focused on tropical marine environments and Achnanthales taxonomy (Bacillariophyceae). She is also interested in poorly known diatom genera, such as
Olifantiella and also in epizoic diatom taxa such asTursiocola .
,
Luc Ector
Abstract
In the historical Grunow collection in Vienna, a piece of a broken slide covered with mica contained diatom material from Porto Subzanski, a coastal environment in Croatia. This material was examined in scanning electron microscopy. Several poorly documented or improperly assigned taxa within the Achnanthales, namely in Amphicocconeis and Cocconeis, were re-examined. A new combination of Amphicocconeis and a new species of Cocconeis are proposed. The new species, Cocconeis subzanskiensis, is closely related to Cocconeis placentula, except for the lack of a characteristic hyaline sub-marginal rim on the raphe valve, and is compared with other marine taxa pertaining to the same group. Recently described in tropical environments, Cocconeis coronatoides has been found in the Grunow material.
About the author
Catherine Riaux-Gobin is “Chargé de Recherche CNRS, Retired position” at CRIOBE (PSL Research University: CNRS-EPHE-UPVD & Labex “CORAIL”, Perpignan, France). Her main research interest is in polar oceanography and ecology (land fast-ice diatoms, Antarctica). Her more recent research has focused on tropical marine environments and Achnanthales taxonomy (Bacillariophyceae). She is also interested in poorly known diatom genera, such as Olifantiella and also in epizoic diatom taxa such as Tursiocola.
Acknowledgments
We are indebted to Pierre Compère (Botanical Garden Meise, Meise, Belgium) for giving indications on the presence of material adjoining Cocconeis quarnerensis in the Grunow collection in Vienna. Many thanks to Bernard Banaigs (USR 3278 CRIOBE: PSL Université Paris-EPHE-CNRS-UPVD) for his help with the chemical treatment of the Grunow mica-slide sample, to Yonko Gorand (C2M, University of Perpignan, France) for assistance with the SEM, to Bart Van de Vijver (Botanical Garden Meise, Meise, Belgium) for bibliographic help, and Michel Poulin and three reviewers for their helpful comments. Funding for this research was partly provided within the framework of the project DIATOMS (LIST, Luxembourg Institute of Science and Technology). We also acknowledge the CNRS-USR 3278-Labex CORAIL for supporting this research and the Polish Ministry of Science for topical subsidy funds.
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©2018 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- In this issue
- Physiology and ecology
- The future of marine biodiversity and marine ecosystem functioning in UK coastal and territorial waters (including UK Overseas Territories) – with an emphasis on marine macrophyte communities
- Thalassodendron ciliatum (Cymodoceaceae) in Palau: occurrence, typhoon impacts and changes over time
- Influence of habitat complexity on fish density and species richness in structurally simple forereef seagrass meadows
- Estuarine algal responses to increasing nitrate concentrations during closed mouth conditions of oligotrophic systems: a laboratory microcosm experiment
- Taxonomy/phylogeny and biogeography
- Achnanthales from historical Grunow collection in Porto Subzanski, Croatia
- Fungal diversity of the hypersaline Inland Sea in Qatar
- Annual reviewer acknowledgement
- Reviewer acknowledgement Botanica Marina volume 61 (2018)
Articles in the same Issue
- Frontmatter
- In this issue
- Physiology and ecology
- The future of marine biodiversity and marine ecosystem functioning in UK coastal and territorial waters (including UK Overseas Territories) – with an emphasis on marine macrophyte communities
- Thalassodendron ciliatum (Cymodoceaceae) in Palau: occurrence, typhoon impacts and changes over time
- Influence of habitat complexity on fish density and species richness in structurally simple forereef seagrass meadows
- Estuarine algal responses to increasing nitrate concentrations during closed mouth conditions of oligotrophic systems: a laboratory microcosm experiment
- Taxonomy/phylogeny and biogeography
- Achnanthales from historical Grunow collection in Porto Subzanski, Croatia
- Fungal diversity of the hypersaline Inland Sea in Qatar
- Annual reviewer acknowledgement
- Reviewer acknowledgement Botanica Marina volume 61 (2018)
