Determining the absolute abundance of dinoflagellate cysts in recent marine sediments II: Further tests of the Lycopodium marker-grain method

Mertens, Kenneth Neil; Price, Andrea; Pospelova, Vera

doi:10.1016/j.revpalbo.2012.06.012

Cited by 73 publications

(46 citation statements)

References 18 publications

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“…The geological preservability of these cysts was demonstrated by their ability to withstand palynological treatment (use of cold HCl and HF, following recommendations by Mertens et al 2012a).…”

Section: Commentsmentioning

confidence: 99%

New dinoflagellate species Protoperidinium haizhouense sp. nov. (Peridiniales, Dinophyceae), its cyst‐theca relationship and phylogenetic position within the Monovela group

Liu¹,

Gu²,

Mertens

et al. 2013

Phycological Research

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Summary The number of cingular plates has been used to differentiate Protoperidinium from Peridinium and related genera. Protoperidinium is characterized by the presence of three cingular plates plus a transitional plate (3C+t). However, many Protoperidinium species have been described that exhibit different cingular plate tabulations. How these species should be classified within the genus remains unclear. To address this question, the phylogenetic relationship of four Protoperidinium species, with three or four cingular plates and lacking a transitional plate, were examined in relationship to other Protoperidinium species. These four species were germinated from cysts deposited in surface sediments collected from the East China Sea, the Bohai Sea and the Yellow Sea. Three of the isolated species, P. tricingulatum, P. americanum and P. parthenopes, were described previously. The fourth is here described as P. haizhouense sp. nov. with the plate formula Po, X, 4′, 3a, 7′′, 3C, 6S, 5′′′, 2′′′′. Differences in the cyst stages of these four species, which can be taxonomically informative, were compared. Partial large subunit ribosomal DNA sequences were obtained by single‐cell polymerase chain reaction. Maximum‐likelihood and Bayesian inference showed that these four species, P. fukuyoi and Islandinium minutum form a monophyletic clade with maximal support. The genus as a whole, however, appeared polyphyletic. Our results suggest that the presence/absence of a transitional plate is significant in the phylogeny of Protoperidinium.

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Section: Commentsmentioning

confidence: 99%

New dinoflagellate species Protoperidinium haizhouense sp. nov. (Peridiniales, Dinophyceae), its cyst‐theca relationship and phylogenetic position within the Monovela group

Liu¹,

Gu²,

Mertens

et al. 2013

Phycological Research

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“…Moreover, during the last decade, the number of new dinoflagellate cyst species described from late Quaternary sediments has steadily increased due to expansion to new regions (especially in coastal areas, e.g. Marret & de Vernal 1997;Zonneveld 1997;Verleye et al 2007;Price & Pospelova 2014), improvements in cyst extraction techniques (Mertens et al 2012a) and new analytical techniques in phycological studies (Kawami et al 2009;Ribeiro et al 2010;Mertens et al 2012b). This key is the first algorithm for dinoflagellate cyst species identification designed as a help tool, especially for inexperienced researchers in the field.…”

Section: Introductionmentioning

confidence: 99%

A determination key for modern dinoflagellate cysts

2015

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The first online modern organic-walled dinoflagellate cyst determination key has been launched at www.marum.de/ dinocystkey.html. This key is based on easily recognisable morphological features of dinoflagellate cysts that can be observed using standard transmitted light microscopy. To date, the key includes 96 cyst species that can be found in late Quaternary marine sediments. This key is free of charge to users, and will be continuously updated and improved by the authors. For each individual species of dinoflagellate cyst, the website provides information on its defining morphological characteristics and the cystÀmotile stage relationship. It gives a comparison with other morphologically similar taxa, links to publications with original cyst descriptions and outlines their modern global distribution where this information is available. All species descriptions are illustrated by line drawings showing their most distinctive characteristics, and accompanied by high-quality bright-field photomicrographs. The key is compatible with all major computing platforms (including smartphones) and software.

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“…All the samples were prepared using standard palynological preparation techniques involving demineralisation with hydrochloric acid (HCl) and hydrofluoric acid (HF) for the removal of carbonates and silicates, respectively, and recommendations by Mertens et al (2009Mertens et al ( , 2012 were followed except for the mesh size. No oxidation or alkali treatment was applied.…”

Section: Methodsmentioning

confidence: 99%

New acritarchs from the late Cenozoic of the southern North Sea Basin and the North Atlantic realm

et al. 2014

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Biostratigraphical investigations of Miocene deposits from the southern North Sea Basin, the Oligocene and Miocene of the Bahamas, and the lower Pliocene of northern Iceland revealed the presence of new acritarch species. Halodinium eirikssonii n. sp. is recovered from the lower Pliocene Serripes Zone of the Tjörnes beds in northern Iceland, where its range is well constrained through magnetostratigraphy and biostratigraphy with dinoflagellate cysts. Leiosphaeridia spongiosa n. sp. is recovered from lower to upper Miocene deposits of the southern North Sea Basin and from upper Oligocene and Miocene deposits of the Bahamas. Palaeostomocystis orbiculata n. sp. appears restricted to the middle Miocene of the North Sea Basin

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Determining the absolute abundance of dinoflagellate cysts in recent marine sediments II: Further tests of the Lycopodium marker-grain method

Cited by 73 publications

References 18 publications

New dinoflagellate species Protoperidinium haizhouense sp. nov. (Peridiniales, Dinophyceae), its cyst‐theca relationship and phylogenetic position within the Monovela group

New dinoflagellate species Protoperidinium haizhouense sp. nov. (Peridiniales, Dinophyceae), its cyst‐theca relationship and phylogenetic position within the Monovela group

A determination key for modern dinoflagellate cysts

New acritarchs from the late Cenozoic of the southern North Sea Basin and the North Atlantic realm

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