Cavinula vincentii Antoniades & Hamilton
Cavinula vincentii Antoniades & Hamilton (Figs 74–81, 172–180) Valves elliptic with broadly rounded ends. Valve length 11–13.5 µm, width 8–10 µm. Striae radiate at center, more strongly radiate towards ends, 22–26 in 10 µm. Striae uniseriate with elliptical to rounded areolae discernable in LM....
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Zenodo
2014
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Online Access: | https://dx.doi.org/10.5281/zenodo.5149494 https://zenodo.org/record/5149494 |
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ftdatacite:10.5281/zenodo.5149494 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Biodiversity Taxonomy Chromista Bacillariophyta Bacillariophyceae Naviculales Cavinulaceae Cavinula Cavinula vincentii |
spellingShingle |
Biodiversity Taxonomy Chromista Bacillariophyta Bacillariophyceae Naviculales Cavinulaceae Cavinula Cavinula vincentii Cvetkoska, Aleksandra Levkov, Zlatko Hamilton, Paul B. Potapova, Marina Cavinula vincentii Antoniades & Hamilton |
topic_facet |
Biodiversity Taxonomy Chromista Bacillariophyta Bacillariophyceae Naviculales Cavinulaceae Cavinula Cavinula vincentii |
description |
Cavinula vincentii Antoniades & Hamilton (Figs 74–81, 172–180) Valves elliptic with broadly rounded ends. Valve length 11–13.5 µm, width 8–10 µm. Striae radiate at center, more strongly radiate towards ends, 22–26 in 10 µm. Striae uniseriate with elliptical to rounded areolae discernable in LM. Axial area narrow, linear; central area small, elliptical or almost round, to asymmetrically elongated. Short and long alternating striae surround the central area. Short striae along valve length, extend onto valve mantle. Internally striae between thickened costae and areolae covered with a hymen. Externally, raphe filiform. Proximal raphe fissures expanded pores, slightly unilaterally bent; distal raphe fissures small pores, terminating on valve face. Internally, raphe linear, positioned on thickened sternum. Terminal raphe fissures with a helictoglossa, not present on proximal raphe ends. Adjacent to distal raphe ends one enlarged, transversally elongated pore-like fissure, externally separated with a small ridge-like structure from areolae. Copulae open bands, with one row of pores, two or more at each valve. Type: –– White Pond, Alert, Ellesmere Island, Nunavut, Canada. Antoniades et al. 2009, figs 7–9 (holotype). Here presented in Figs 172–180 (type material). Observations:— Cavinula vincentii was described from Ellesmere Island, Canada. The taxon resembles the elliptical forms of C. pseudoscutiformis (Figs 44–53), but it is clearly distinguished by the valve outline, which is more elliptical, has a larger central area and the general morphology of the raphe. The main morphological character which separates C. vincentii from C. pseudoscutiformis and also the other taxa belonging to the genus Cavinula is the presence of the pore-like fissures at the valve apices. Based on SEM photomicrographs one other taxon, C . scutiformis has distinct pore-like fissures at the valve apices. Additionally, a specimen identified by (Krammer & Lange-Bertalot, 1986, fig. 59: 12) as C. pseudoscutiformis from Europe appears to be similar to C. vincentii , but a more detailed LM and SEM observation is necessary to confirm this. Distribution:— Antoniades et al. (2009) described C. vincentii from the locality White Pond, Alert, Ellesmere Island, Nunavut, a shallow pond with inorganic sediments and high pH (8.3). During our observation of a number of slides deposited at the CANA Diatom Collection, the presence of C. vincentii was confirmed in the following localities: two sediment cores recovered from the deepest part of Lake Oakley and Little Clear Lake, respectively, both lakes located in the province of Ontario. This taxon was also observed in the recent samples from Lake Abitibi (Québec), Lake Contwoyto (Northwest Territories) and in samples originating from Isachsen (Ellef Ringnes Island, Nunavut Territory). Additionally, C. vincentii was confirmed from one samples collected in Pennsylvania (Fig. 77). This taxon is present in mildly acidic to circumneutral, oligotrophic waters across northern North America. Distribution Records:— Antoniades et al. (2009, figs 7–9, 12, 13, 60–64, Arctic Archipelago). : Published as part of Cvetkoska, Aleksandra, Levkov, Zlatko, Hamilton, Paul B. & Potapova, Marina, 2014, The biogeographic distribution of Cavinula (Bacillariophyceae) in North America with the descriptions of two new species, pp. 181-207 in Phytotaxa 184 (4) on page 201, DOI: 10.11646/phytotaxa.184.4.1, http://zenodo.org/record/5146714 : {"references": ["Antoniades, D., Hamilton, P. B., Hinz, F., Douglas, M. S. V., Smol, J. P. (2009) Eight new species of freshwater diatoms (Bacillariophyceae) from the Canadian Arctic Archipelago. Nova Hedwigia 88: 57 - 80. http: // dx. doi. org / 10.1127 / 0029 - 5035 / 2009 / 0088 - 0057", "Krammer, K. & Lange-Bertalot, H. (1986) Bacillariophyceae, 1. Teil: Naviculaceae. In: Ettl, H., Gerloff, J., Heynig, H. & Mollenhauer, D. (Eds.) Gustav Fischer, Stuttgart. Susswasserflora von Mitteleuropa (begrundet von A. Pascher) 2 / 1: 876 pp."]} |
format |
Text |
author |
Cvetkoska, Aleksandra Levkov, Zlatko Hamilton, Paul B. Potapova, Marina |
author_facet |
Cvetkoska, Aleksandra Levkov, Zlatko Hamilton, Paul B. Potapova, Marina |
author_sort |
Cvetkoska, Aleksandra |
title |
Cavinula vincentii Antoniades & Hamilton |
title_short |
Cavinula vincentii Antoniades & Hamilton |
title_full |
Cavinula vincentii Antoniades & Hamilton |
title_fullStr |
Cavinula vincentii Antoniades & Hamilton |
title_full_unstemmed |
Cavinula vincentii Antoniades & Hamilton |
title_sort |
cavinula vincentii antoniades & hamilton |
publisher |
Zenodo |
publishDate |
2014 |
url |
https://dx.doi.org/10.5281/zenodo.5149494 https://zenodo.org/record/5149494 |
long_lat |
ENVELOPE(-103.505,-103.505,78.785,78.785) ENVELOPE(-102.256,-102.256,78.502,78.502) ENVELOPE(-62.857,-62.857,82.452,82.452) ENVELOPE(-112.122,-112.122,57.734,57.734) |
geographic |
Arctic Nunavut Northwest Territories Ellesmere Island Canadian Arctic Archipelago Canada Isachsen Ellef Ringnes Island White Pond Clear Lake |
geographic_facet |
Arctic Nunavut Northwest Territories Ellesmere Island Canadian Arctic Archipelago Canada Isachsen Ellef Ringnes Island White Pond Clear Lake |
genre |
Arctic Archipelago Arctic Canadian Arctic Archipelago Ellef Ringnes Island Ellesmere Island Isachsen Northwest Territories Nunavut |
genre_facet |
Arctic Archipelago Arctic Canadian Arctic Archipelago Ellef Ringnes Island Ellesmere Island Isachsen Northwest Territories Nunavut |
op_relation |
http://zenodo.org/record/5146714 http://publication.plazi.org/id/7665E764A46CFF921D218F632070FFCC https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/phytotaxa.184.4.1 http://zenodo.org/record/5146714 http://publication.plazi.org/id/7665E764A46CFF921D218F632070FFCC https://dx.doi.org/10.5281/zenodo.5146720 https://dx.doi.org/10.5281/zenodo.5146736 https://dx.doi.org/10.5281/zenodo.5149495 https://zenodo.org/communities/biosyslit |
op_rights |
Open Access info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.5149494 https://doi.org/10.11646/phytotaxa.184.4.1 https://doi.org/10.5281/zenodo.5146720 https://doi.org/10.5281/zenodo.5146736 https://doi.org/10.5281/zenodo.5149495 |
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1766303083019632640 |
spelling |
ftdatacite:10.5281/zenodo.5149494 2023-05-15T14:28:58+02:00 Cavinula vincentii Antoniades & Hamilton Cvetkoska, Aleksandra Levkov, Zlatko Hamilton, Paul B. Potapova, Marina 2014 https://dx.doi.org/10.5281/zenodo.5149494 https://zenodo.org/record/5149494 unknown Zenodo http://zenodo.org/record/5146714 http://publication.plazi.org/id/7665E764A46CFF921D218F632070FFCC https://zenodo.org/communities/biosyslit https://dx.doi.org/10.11646/phytotaxa.184.4.1 http://zenodo.org/record/5146714 http://publication.plazi.org/id/7665E764A46CFF921D218F632070FFCC https://dx.doi.org/10.5281/zenodo.5146720 https://dx.doi.org/10.5281/zenodo.5146736 https://dx.doi.org/10.5281/zenodo.5149495 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Chromista Bacillariophyta Bacillariophyceae Naviculales Cavinulaceae Cavinula Cavinula vincentii Text Taxonomic treatment article-journal ScholarlyArticle 2014 ftdatacite https://doi.org/10.5281/zenodo.5149494 https://doi.org/10.11646/phytotaxa.184.4.1 https://doi.org/10.5281/zenodo.5146720 https://doi.org/10.5281/zenodo.5146736 https://doi.org/10.5281/zenodo.5149495 2021-11-05T12:55:41Z Cavinula vincentii Antoniades & Hamilton (Figs 74–81, 172–180) Valves elliptic with broadly rounded ends. Valve length 11–13.5 µm, width 8–10 µm. Striae radiate at center, more strongly radiate towards ends, 22–26 in 10 µm. Striae uniseriate with elliptical to rounded areolae discernable in LM. Axial area narrow, linear; central area small, elliptical or almost round, to asymmetrically elongated. Short and long alternating striae surround the central area. Short striae along valve length, extend onto valve mantle. Internally striae between thickened costae and areolae covered with a hymen. Externally, raphe filiform. Proximal raphe fissures expanded pores, slightly unilaterally bent; distal raphe fissures small pores, terminating on valve face. Internally, raphe linear, positioned on thickened sternum. Terminal raphe fissures with a helictoglossa, not present on proximal raphe ends. Adjacent to distal raphe ends one enlarged, transversally elongated pore-like fissure, externally separated with a small ridge-like structure from areolae. Copulae open bands, with one row of pores, two or more at each valve. Type: –– White Pond, Alert, Ellesmere Island, Nunavut, Canada. Antoniades et al. 2009, figs 7–9 (holotype). Here presented in Figs 172–180 (type material). Observations:— Cavinula vincentii was described from Ellesmere Island, Canada. The taxon resembles the elliptical forms of C. pseudoscutiformis (Figs 44–53), but it is clearly distinguished by the valve outline, which is more elliptical, has a larger central area and the general morphology of the raphe. The main morphological character which separates C. vincentii from C. pseudoscutiformis and also the other taxa belonging to the genus Cavinula is the presence of the pore-like fissures at the valve apices. Based on SEM photomicrographs one other taxon, C . scutiformis has distinct pore-like fissures at the valve apices. Additionally, a specimen identified by (Krammer & Lange-Bertalot, 1986, fig. 59: 12) as C. pseudoscutiformis from Europe appears to be similar to C. vincentii , but a more detailed LM and SEM observation is necessary to confirm this. Distribution:— Antoniades et al. (2009) described C. vincentii from the locality White Pond, Alert, Ellesmere Island, Nunavut, a shallow pond with inorganic sediments and high pH (8.3). During our observation of a number of slides deposited at the CANA Diatom Collection, the presence of C. vincentii was confirmed in the following localities: two sediment cores recovered from the deepest part of Lake Oakley and Little Clear Lake, respectively, both lakes located in the province of Ontario. This taxon was also observed in the recent samples from Lake Abitibi (Québec), Lake Contwoyto (Northwest Territories) and in samples originating from Isachsen (Ellef Ringnes Island, Nunavut Territory). Additionally, C. vincentii was confirmed from one samples collected in Pennsylvania (Fig. 77). This taxon is present in mildly acidic to circumneutral, oligotrophic waters across northern North America. Distribution Records:— Antoniades et al. (2009, figs 7–9, 12, 13, 60–64, Arctic Archipelago). : Published as part of Cvetkoska, Aleksandra, Levkov, Zlatko, Hamilton, Paul B. & Potapova, Marina, 2014, The biogeographic distribution of Cavinula (Bacillariophyceae) in North America with the descriptions of two new species, pp. 181-207 in Phytotaxa 184 (4) on page 201, DOI: 10.11646/phytotaxa.184.4.1, http://zenodo.org/record/5146714 : {"references": ["Antoniades, D., Hamilton, P. B., Hinz, F., Douglas, M. S. V., Smol, J. P. (2009) Eight new species of freshwater diatoms (Bacillariophyceae) from the Canadian Arctic Archipelago. Nova Hedwigia 88: 57 - 80. http: // dx. doi. org / 10.1127 / 0029 - 5035 / 2009 / 0088 - 0057", "Krammer, K. & Lange-Bertalot, H. (1986) Bacillariophyceae, 1. Teil: Naviculaceae. In: Ettl, H., Gerloff, J., Heynig, H. & Mollenhauer, D. (Eds.) Gustav Fischer, Stuttgart. Susswasserflora von Mitteleuropa (begrundet von A. Pascher) 2 / 1: 876 pp."]} Text Arctic Archipelago Arctic Canadian Arctic Archipelago Ellef Ringnes Island Ellesmere Island Isachsen Northwest Territories Nunavut DataCite Metadata Store (German National Library of Science and Technology) Arctic Nunavut Northwest Territories Ellesmere Island Canadian Arctic Archipelago Canada Isachsen ENVELOPE(-103.505,-103.505,78.785,78.785) Ellef Ringnes Island ENVELOPE(-102.256,-102.256,78.502,78.502) White Pond ENVELOPE(-62.857,-62.857,82.452,82.452) Clear Lake ENVELOPE(-112.122,-112.122,57.734,57.734) |