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14 results for “dinoflagellate cyst”
Dinoflagellate cyst assemblage data from core JM09-020
<p>Absolute abundances (cysts g<sup>-1</sup>) of dinoflagellate cysts (dinocysts) species, total dinocyst abundance (cysts g<sup>-1</sup>), relative abundance of dinocysts produced by auto- and heterotrophic dinoflagellate species (%), and dry bulk density (g cm<sup>-3</sup>) for flux calculation in core JM09-020.</p>
Fig. 6 in Dinoflagellate Cysts Stratigraphy And Palynofacies Of Oligocene Sequences In The Northern Eastern Carpathians
Fig. 6 In a palynological slide under natural light and blue-light fluorescence, the representative palynofacies from the Lower Menilite and Bituminous Marls formations. Scale bar: 30 μm. a - abundant granular AOM with brown color in association with EPS (black arrow, tiny filaments forming an alveolar network), coccoid bodies (bacteria or algae, white arrow), gelified AOM (red arrow) and palynomorphs (blue arrow). The color and abundance of AOM suggest a dysoxic–anoxic environment (P174); b - idem previous image (blue-light fluorescence), AOM exhibits weak fluorescence; c – brown granular AOM (P178); d - idem previous image (blue-light fluorescence), AOM shows a patchy fluorescence.
Fig. 5 in Dinoflagellate Cysts Stratigraphy And Palynofacies Of Oligocene Sequences In The Northern Eastern Carpathians
Fig. 5 Relative abundances of particulate organic matter from the analyzed samples (percentage calculated to Total Sedimentary Organic Matter).
Fig. 1 in Dinoflagellate Cysts Stratigraphy And Palynofacies Of Oligocene Sequences In The Northern Eastern Carpathians
Fig. 1 Geological and tectonic sketch map of the Gura Humorului-Frasin area (after Ionesi, 1971, simplified), with the location of the geological cross-section studied.
Fig. 8 in Dinoflagellate Cysts Stratigraphy And Palynofacies Of Oligocene Sequences In The Northern Eastern Carpathians
Fig. 8 The representative palynofacies from the Bituminous Marls, Lower Dysodilic Shale and Kliwa Sandstone formations. Scale bar: 30 μm. a - abundant AOM (granular and gelified; Bituminous Marls Fm., sample P178) with dark brown color. Granular AOM (blue arrow), gelified AOM (red arrow); b - granular AOM with a light-brown color (black arrow), EPS (red arrow) mixed with continental organic particles such as translucent phytoclasts (yellow arrow), gelified AOM (blue arrow) and palynomorphs (green arrow) (Lower Dysodilic Shale Fm., sample P180); c - brown woody tissue large in size (blue arrow), in association with continental palynomorphs (green arrow) and other terrestrial organic particles (Kliwa Sandstone Fm., sample P185).
Fig. 7 in Dinoflagellate Cysts Stratigraphy And Palynofacies Of Oligocene Sequences In The Northern Eastern Carpathians
Fig. 7. Ternary kerogen plots (Tyson, 1995) for the Lower Menilite Formation up to Kliwa Sandstone Formation, with inferred depositional environments.
Fig. 4 in Dinoflagellate Cysts Stratigraphy And Palynofacies Of Oligocene Sequences In The Northern Eastern Carpathians
Fig. 4 Range chart of the dinoflagellate cysts used in this study. Correlation with previously published dinocyst zonations within Germany (Köthe & Piesker, 2007), the North Sea Basin (Schiøler, 2005), Austria (Soliman, 2012), Italy (Pross et al., 2010), Belgium (Van Simaeys et al., 2005), Northwest Europe (Powell, 1992) and Poland (Barski & Bojanowski, 2010) are shown. Dinocyst biozones and bioevents according to Powell & Brinkhuis (in Vandenberghe et al., 2012).
Fig. 3 in Dinoflagellate Cysts Stratigraphy And Palynofacies Of Oligocene Sequences In The Northern Eastern Carpathians
Fig. 3 Spores and pollen taxa from the studied section (scale bar 30 µm). a. Laevigatosporites gracilis (P180); b. Laevigatisporites nutidus (P180); c. Extrapunctatosporis sp. (P183); d. Pityosporites labdacus (P183); e. Ephedripites sp. (P183); f. Pityosporites alatus (P183); g. Pityosporites microalatus (P183); h. Pityosporites scopulipites (P185); i. Inaperturopollenites concedipites (P180); j. Inaperturopollenites hiatus (P180); k. Cupressacites bockwitzensis (P180); l. Podocarpidites libellus (P183); m. Monocolpopollenites tranquillus (P180); n. Caryapollenites simplex (P183); o. Arecipites sp. (P183); p. Faguspollenites cf. subtilis (P176); q. Tricolporopollenites microhenrici (P180); r. Cyrillaceaepollenites megaexactus (P176); s. Myricipites bituitus (P183); t. Ilexpollenites sp. (P183); u. Coryluspollenites sp. (P183).
FIGURE 2. Dinoflagellate cysts. 2.1 in New palynological evidence for the age of the Beda Formation, Sirte Basin, Libya
FIGURE 2. Dinoflagellate cysts. 2.1. cf. Cyclonephelium sp. (6854' 8", slide 1: 97.2 x 23). Size: 41x31 µm. 2.2. Canningia sp. (6854' 8", slide 2: 95 x 37.7). Size: 28x17 µm. 2.3. Spiniferites ramosus group (6854' 8", slide 2: 95 x 37.7). Cyst diameter 19 µm; and process length 3-4.5 µm. 2.4. Batiacasphaera compta (6871' 4", Slide 1: 91.5x33.4). Cyst diameter 32x27 µm. 2.5. Homotryblium floripes (6871, slide 1: 95.9x32.1) Cyst diameter 38µm; and process length 12-15 µm. 2.6. Spiniferites ramosus group (6863, slide 2: 97.8 x 33). Cyst diameter 27 µm; and process length 5 µm. 2.7. Polysphaeridium subtile (6863, slide 2: 104.8 x 38). Cyst diameter 13 µm; process length 2-3 µm. 2.8. Operculodinium centrocarpum (6863, slide 1: 100 x 38.8). Cyst diameter 28x24µm; and process length 4-5 µm. 2.9. Fibrocysta cf. bipolaris (6871' 4", slide 1: 96.5x30.5). Cyst diameter 42x34 µm; process length 12-18 µm. 2.10. Homotryblium floripes (6871' 4", slide 1: 94.7x28.2). Cyst diameter 42x31 µm; process length 12-15 µm.
Dinoflagellate cysts and benthic foraminifera from surface sediments of Svalbard fjords and shelves as paleoenvironmental indicators
<p>Supplementary Table 1. Seasonally averaged sea-ice cover, SST and SSS data used for the multivariate statistical analysis.</p> <p>Supplementary Table 2. Relative abundances of individual dinoflagellate cyst taxa, total cyst concentration [cysts g<sup>-1</sup>], and relative abundance of auto- and heterotrophic cysts at each station.</p> <p>Supplementary Table 3. Relative abundances of individual benthic foraminifera taxa, total benthic foraminifera concentration [forams g<sup>-1</sup>], and relative abundance of calcareous and agglutinated benthic foraminifera at each station.</p>
High Arctic late Paleocene and early Eocene dinoflagellate cysts; dinocyst results from IODP Expedition 302 (ACEX)
<p>This dataset includes the raw palynological data, notably dinoflagellate cyst assemblages, including 38 plates with high-resolution light microscope photos and 3 plates with SEM photos, from upper Paleocene and lower Eocene strata recovered from Lomonosov Ridge, Arctic Ocean, during IODP Expedition 302 (2004). The dataset forms the basis this publication: Appy Sluijs and Henk Brinkhuis, 2024: High Arctic late Paleocene and early Eocene dinoflagellate cysts . Journal of Micropaleontology 43 (2), 441-474. doi:10.5194/jm-43-441-2024.</p> <p>Please use Version 4 for all of the datasets.</p>
Stressor-induced ecdysis and thecate cyst formation in the armoured dinoflagellates Prorocentrum cordatum
<p>The culture of the dinoflagellates Prorocentrum cordatum was subjected to various stressors to induce the process of ecdysis. The stressors were centrifugation, vortexing, changes in temperature, salinity and pH, application of 2,3-dichlorobenzonitrile and tetracycline. The rates of complete ecdysis and ecdysis initiation, as well as mortality rate were calculated following the treatments. Rate of ecdysis induced by centrifugation was additionally estimated in the cultures at the different growth phases.</p>
Dinoflagellate cyst and pollen counts in combination with environmental parameters from the northern Gulf of Mexico
<p>Counts from dinoflagellate cysts and pollen from 21 surface sediments collected from the northern Gulf of Mexico. The dataset also includes the environmental parameters used for the redundancy analysis in the article. Supplement to: Yedema et al., (2023); Dinoflagellate cyst and pollen assemblages as tracers for marine productivity and river input in the northern Gulf of Mexico (https://doi.org/10.5194/jm-42-257-2023)</p>
Fig. 2 in Dinoflagellate Cysts Stratigraphy And Palynofacies Of Oligocene Sequences In The Northern Eastern Carpathians
Fig. 2 Dinoflagellate assemblages from the studied section (scale bar 30 µm). a, b. Botryococcus sp. (transmitted light and fluorescence; P174); c. Batiacasphaera explanata (P176); d. Batiacasphaera sp. (P180); e. Batiacasphaera cf. micropapillata (P185); f. Pentadinium laticinctum (P183); g. Lingulodinium cf. machaerophorum (P183); h. Homotryblium tenuispinosum (P185); i. Thalassiphora pelagica (P185); j. Operculodinium centrocarpum (P185); k. Membranophoridium aspinatum (P185); l. Tytthodiscus sp. (P185); m. Dapsilidinium pseudocolligerum (P185); n. Selenopemphix nephroides (P185); o. Cleistosphaeridium placacanthum (P185); p. Spiniferites sp. (P185); q, r. Wetzeliella gochtii (P185); s. Wetzeliella symmetrica (P183); t. Wetzeliella spinula (P185); u, v. Rhombodinium draco (P185); x, y. Deflandrea phosphoritica (P185).
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