Diversity and distribution of dinoflagellate cysts in surface sediments from fjords of western Vancouver Island (British Columbia, Canada)

Gurdebeke, Pieter; Pospelova, Vera; Mertens, Kenneth Neil; Dallimore, A.; Chana, Jasmin; Louwye, Stephen

doi:10.1016/j.marmicro.2018.07.005

Cited by 15 publications

(18 citation statements)

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“…Cyst specimens were studied from surface, sediment trap and core samples that were mostly used in previous studies (Table 2). These include samples from the coastal waters of southern Vancouver Island (Krepakevich and Pospelova 2010), Saanich Inlet (Price and Pospelova 2011, Mertens et al 2012, Price et al 2016, western Vancouver Island (Gurdebeke et al 2017(Gurdebeke et al , 2018b, the Vilaine estuary (France; Mertens et al 2009), the South China Sea (Li et al, in prep. ) and Bohai Sea.…”

Section: Sampling and Imagingmentioning

confidence: 99%

Taxonomic revision, phylogeny, and cyst wall composition of the dinoflagellate cyst genus Votadinium Reid (Dinophyceae, Peridiniales, Protoperidiniaceae)

et al. 2019

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The taxonomy of the dinoflagellate cyst-based genus Votadinium has been in need of revision. This was accomplished here by integrating morphology, LSU rDNA sequences, and cyst wall composition analyses through micro-Fourier transform infrared spectroscopy. Three new species, Votadinium pontifossatum, V. rhomboideum and V. reidii, were described as cyst stages of Protoperidinium paraoblongum, P. quadrioblongum, and P. steidingerae, respectively. A previously undescribed type of ornamentation was reported for V. pontifossatum. A fourth new species was assigned to V. concavum. Furthermore, Lejeunecysta psilodora Benedek (=Lejeunecysta psuchra Matsuoka), was re-described as V. psilodora and the holotype re-illustrated, as was done for the holotype of V. spinosum Reid. New illustrations were provided for V. elongatum and V. nanhaiense. LSU rDNA sequences of V. concavum revealed its placement in the Oceanica section of the genus Protoperidinium, supporting earlier evidence that the Oceanica section and the cyst based genus Votadinium form a monophyletic clade. Thus, Votadinium could be considered the cyst equivalent of the motile-defined Oceanica section. The cyst walls of Votadinium spinosum, V. calvum and V. pontifossatum are built from carbohydrate-based macromolecules with N-containing functional groups in agreement with the heterotrophic nature of their motile stage. Comparison with related genera Trinovantedinium and Quinquecuspis reveals that the species and genera can be separated based on cyst wall composition, supporting the phylogeny based on molecular data and/or ecological differences. Furthermore, Trinovantedinium applanatum spectra unexpectedly show an additional absorption at 1510 cm −1 indicating an aromatic group that is commonly reported for sporopollenin and not seen in dinoflagellate cysts so far. This study stabilizes the taxonomy Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site. of the cyst genus Votadinium, clarifies its relationship to the Oceanica section of Protoperidinium, and further supports the application of whole cyst wall chemistry in helping address problems in dinoflagellate cyst taxonomy and ecology.

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Section: Sampling and Imagingmentioning

confidence: 99%

Taxonomic revision, phylogeny, and cyst wall composition of the dinoflagellate cyst genus Votadinium Reid (Dinophyceae, Peridiniales, Protoperidiniaceae)

et al. 2019

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“…Overall, this compilation highlights that only few dinocyst taxa are found everywhere, which could imply their limited use as tracers of past global environmental conditions if used just individually. However, it is worth noting that their relative abundance is often related to specific oceanographic conditions as discussed in de Vernal et al 2011 machaerophorum is also very variable and correlates in some basins with temperature and/or salinity (e.g., Mertens et al, 2009Mertens et al, , 2012bJansson et al, 2014;Gurdebeke et al, 2018). The case of Operculodinium centrocarpum sensu Wall and Dale 1966 is very interesting as the relationship between process length and salinity shows strong positive correlation in the Baltic Sea and the opposite in the North Pacific (Mertens et al 2009).…”

Section: Biogeographical Patternsmentioning

confidence: 98%

“…Alternatively, this species is a recent immigrant transported in the ballast of ships that travel canals and rivers linking the low salinity waters from Baltic to Black seas. Other studies have also reported the presence of Biecheleria cysts, but due to their small size (<15 µm) some are likely to be lost during processing (e.g., Price and Pospelova, 2011) and therefore not included in total cyst counts (e.g., Bringué et al, 2013;Heikkilä et al, 2014;Price et al, 2017a;Gurdebeke et al, 2018). Finally, Oblea acanthocysta, revisited by Mertens et al (2015), bears some resemblance with Echinidinium species and may have been included in this group in routine counts.…”

Section: Northern Latitude Taxamentioning

confidence: 99%

“…Finally, Oblea acanthocysta, revisited by Mertens et al (2015), bears some resemblance with Echinidinium species and may have been included in this group in routine counts. However, it may also be geographically restricted off Japan, although it has recently been identified in the Izmir Bay (Aydin et al, 2011(Aydin et al, , 2015a and British Columbian fjords (Gurdebeke et al, 2018).…”

Section: Northern Latitude Taxamentioning

confidence: 99%

“…Caspidinium rugosum is also thought to be a Paratethys relic, occurring in the European Pannonian Basin during the late Miocene. It is worth noting that the cyst of Oblea acanthocysta was initially observed solely off Japan (Omura Bay, Kawami et al, 2006) but has recently been identified in estuarine waters of British Columbia (Canada) (Gurdebeke et al 2018) and the Izmir Bay (Turkey) (Aydin et al 2011(Aydin et al , 2015a. This example raises the question of the occurrence of this species in the eastern Mediterranean Sea, which could be the consequence of long-distance transport due to human activities or the result of being overlooked or lumped as a spiny brown cyst in other palynological studies.…”

Section: Dinocysts With Limited and Small Geographical Rangesmentioning

confidence: 99%

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From bi-polar to regional distribution of modern dinoflagellate cysts, an overview of their biogeography

Marret

Bradley

Vernal

et al. 2020

Marine Micropaleontology

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This paper examines the distribution of 91 modern dinoflagellate cyst taxa from 3636 locations across the world's oceans. Patterns of distributions among the taxa included bipolarity, cosmopolitan, northern versus southern hemispheres, and geographically restricted. Of the 91 taxa, three dominate these assemblages at the global scale, Brigantedinium species, Operculodinium centrocarpum sensu Wall and Dale 1966 and some species of Spiniferites. Whereas Brigantedinium is a true cosmopolitan taxon, with high abundances in each ocean, Operculodinium centrocarpum sensu Wall and Dale 1966 shows high abundances in polar to temperate regions in the Northern Hemisphere, and in tropical to subtropical waters in the Southern Hemisphere. Spiniferites species show highest occurrences in the Southern Hemisphere. This study also highlights three true bi-polar species, Impagidinium pallidum, Islandinium minutum and Polarella glacialis. Only a few taxa are strictly endemic, either being relics of ancient seas such as the Paratethys (Spiniferites cruciformis) or linked to specific environmental conditions. However, recent studies have shown recent worldwide dispersal of these endemic species possibly due to human activities. Overall, this compilation has highlighted the progress made since the early 1970s on our understanding of these important tracers of environmental conditions but also gaps in our knowledge of their distribution in pelagic regions in the Pacific and Indian Oceans as well as under Arctic sea ice.

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The affiliation of Hexasterias problematica and Halodinium verrucatum sp. nov. to ciliate cysts based on molecular phylogeny and cyst wall composition

Gurdebeke

Mertens

Takano

et al. 2018

European Journal of Protistology

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Species in the genera Hexasterias and Halodinium have been recorded over the last decades as acritarchs in palynological and/or plankton studies. In paleoenvironmental studies, these resting stages are often interpreted as indicators of freshwater input. The biological affinity of these genera has never been definitely established. Here, a new species, Halodinium verrucatum sp. nov., is described and molecular evidence (single specimen SSU and LSU rDNA sequencing) reveals that both this new species and Hexasterias problematica, collected from sediment samples in the Skagerrak and Baltic Sea, are resting stages of prorodontid ciliates. Additionally, infrared spectroscopic analysis (micro-FTIR) of Hexasterias problematica and Halodinium spp. specimens indicates a carbohydrate-based composition of the cyst wall with evidence for nitrogen-containing functional groups. A similar composition is recorded for tintinnid loricae, which further supports the placement of Hexasterias and Halodinium as ciliate cysts, and the composition is consistent with the heterotrophic nature of ciliates. The morphologically similar species Radiosperma corbiferum has a comparable composition, suggesting a similar ciliate affinity and indicating the utility of micro-FTIR in understanding acritarch affinity. Hexasterias problematica typically occurs in coastal waters from temperate to arctic regions. Halodinium verrucatum sp. nov. is observed in temperate estuarine sediments in the northern hemisphere.

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Diversity and distribution of dinoflagellate cysts in surface sediments from fjords of western Vancouver Island (British Columbia, Canada)

Cited by 15 publications

References 86 publications

Taxonomic revision, phylogeny, and cyst wall composition of the dinoflagellate cyst genus Votadinium Reid (Dinophyceae, Peridiniales, Protoperidiniaceae)

Taxonomic revision, phylogeny, and cyst wall composition of the dinoflagellate cyst genus Votadinium Reid (Dinophyceae, Peridiniales, Protoperidiniaceae)

From bi-polar to regional distribution of modern dinoflagellate cysts, an overview of their biogeography

The affiliation of Hexasterias problematica and Halodinium verrucatum sp. nov. to ciliate cysts based on molecular phylogeny and cyst wall composition

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