4,568 research outputs found
Cymatosirella minutissima Dabek, Witkowski & Sabbe 2013, comb. nov.
No full textCymatosirella minutissima (Sabbe & Muylaert) Dąbek, Witkowski & Sabbe comb. nov. Basionym: Cymatosira minutissima Sabbe & Muylaert in Sabbe, K., Vanelslander, B., Ribeiro, L., Witkowski, A., Muylaert, K. & Vvyerman, W. (2010: 246, figs 17–20, 28, 31). For a detailed description of this species, see Sabbe et al. (2010).Published as part of Dąbek, Przemysław, Sabbe, Koen, Witkowski, Andrzej, Archibald, Colin, Kurzydłowski, Krzyszof J. & Zgłobicka, Izabela, 2013, Cymatosirella Dąbek, Witkowski & Sabbe gen. nov., a new marine benthic diatom genus (Bacillariophyta) belonging to the family Cymatosiraceae, pp. 42-56 in Phytotaxa 121 (1) on page 50, DOI: 10.11646/phytotaxa.121.1.2, http://zenodo.org/record/507946
Gliwiczia tenuis Kulikovskiy, Lange-Bertalot & Witkowski 2013, sp. nov.
No full textGliwiczia tenuis Kulikovskiy, Lange-Bertalot & Witkowski sp. nov. Figs 43–66 Frustules with a horse shoe-like internal cavum at both raphid and rapheless valve as characteristic of the genus. Valves broadly elliptical with broadly rounded ends. Length 7–13 µm, breadth 4.6–8 µm. LM, raphe valve (Figs 56–58): Raphe filiform, straight central ends slightly expanded, distal ends indistinct. Axial area narrow, linear. Central area forming a narrow, ca. 0.5 µ m broad stauros at both sides but unilaterally obscured by the elliptical cavum. Striae radiate throughout, becoming progressively stronger radiate to the ends, 28–33 in 10 µm. Areolae not discernible. LM, rapheless valve (Figs 43–55): Axial and central area merging into a wide elliptical space, striae therefore restricted to a marginal zone. No stauros interrupts the striae opposite to the side with the cavum. Striae 21–24 in 10 µm. Areolae not discernible. SEM, raphless valve, internal view (Figs 59–64): Sternum with raphe vestiges visible as a shallow elevation above the central axial area. The cavum is comparatively short, restricted to the marginal zone. A stauros is barely or indistinctly developed. A gap between the striae opposite to the cavum is lacking regularly. Areolae 50–60 in 10 µm. SEM, raphe valve, internal view (Fig. 65): Central raphe ends deflected clearly to opposite sides. The stauros together with the raphe sternum is strongly elevated above the internal valve surface. Cavum present extended from the centre nodule to the valve margin. Areolae uniseriate, small, approximately circular. SEM, raphe valve, external view (Fig. 66): Raphe with small central pores and more or less distinctly to opposite sides deflected distal ends that may be pore-like expanded at junction between valve face and mantle. The central area in a form of stauros appears clearly asymmetrical becoming expanded towards the margin at that side where the cavum occurs internally. Areola foramina are circular and open. Type: slide no. 15645m (holotypus here designated see Fig. 46) in collection Maxim Kulikovskiy, I.D. Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences (IBIW) 20.07.1965, leg. A.P. Skabitschewsky. Isotype: slide no. 15645a in collection Andrzej Witkowski, Institute of Marine Sciences, University of Szczecin (SZCZ). Distribution: As yet known from the Lake Baikal. Etymology: tenuis in Latin means smaller one.Published as part of Kulikovskiy, Maxim, Lange-Bertalot, Horst & Witkowski, Andrzej, 2013, Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science, pp. 1-16 in Phytotaxa 109 (1) on pages 6-8, DOI: 10.11646/phytotaxa.109.1.1, http://zenodo.org/record/507867
Gliwiczia latarea Kulikovskiy, Lange-Bertalot & Witkowski 2013, sp. nov.
No full textGliwiczia latarea Kulikovskiy, Lange-Bertalot & Witkowski sp. nov. Figs 67–88 Frustules with a horse shoe-like internal cavum at both raphid and rapheless valve as characteristic of the genus. Valves broadly elliptical with broadly rounded ends. Length 11–15 µm, breadth 6.5–9.5 µm. LM, raphe valve (Figs 79–83): Raphe filiform, straight, central ends slightly expanded, distal ends hardly noticeably deflected to opposite sides. Axial area narrow, linear, barely widened proximally. Central area forming a narrow, ca. 1 µm broad stauros at both sides but unilaterally masked towards margins by the elliptical cavum. Striae radiate throughout but becoming progressively stronger radiate to the ends 27-33 in 10 µm. Areolae difficult to discern, more than 30 in 10 µm. LM, rapheless valve (Figs 67–78): Axial and central area merging to a wide elliptical space, striae therefore restricted to a marginal zone. Nevertheless on the side opposite to the cavum a short stauros is clearly marked. Striae 21–24 in 10 µm. SEM, raphe valve, internal view (Fig. 84): Central raphe ends deflected clearly to opposite sides. The stauros together with the raphe sternum is elevated above the internal valve surface. Cavum in circle shape present extended on the one side of the sternum. Areolae uniseriate, small, approximately circular or elongated. SEM, rapheless valve, internal view (Figs 85–88): The internal nonperforated area is not simply flat but a narrow sternum and similarly to the stauros relief-like elevated. Vestiges of a raphe are present. The cavum appears prominently extended ca. 1/4 of the valve width. Areolae, ca. 40 in 10 µ m, are occluded by membranes. Type: slide no. 15645m (holotypus here designated see Fig. 68) in collection Maxim Kulikovskiy, I.D. Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences (IBIW) 20.07.1965, leg. A.P. Skabitschewsky. Isotype: slide no. 15645a in collection Andrzej Witkowski, Institute of Marine Sciences, University of Szczecin (SZCZ). Distribution: only found in Lake Baikal associated with the other three taxa described here as new. Etymology: latarea in Latin means possessing a broad areaPublished as part of Kulikovskiy, Maxim, Lange-Bertalot, Horst & Witkowski, Andrzej, 2013, Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science, pp. 1-16 in Phytotaxa 109 (1) on pages 8-10, DOI: 10.11646/phytotaxa.109.1.1, http://zenodo.org/record/507867
Andrzej Witkowski, Pełnomocnicy rządowi do spraw podatku gruntowego w Polsce (1947- 1950), 2009
Full text linkRecenzja: Andrzej Witkowski, Pełnomocnicy rządowi do spraw podatku gruntowego w Polsce (1947-1950), Wolters Kluwer, Warszawa 2009, ss. 40
Andrzej Witkowski, Podatki państwowe w Polsce w latach 1944-1950, Wyższa Szkoła Administracji i Zarządzania w Przemyślu, Przemyśl 2005, ss. 269
Full text linkReview: Andrzej Witkowski, Podatki państwowe w Polsce w latach 1944-1950, 2005 (Robert Jastrzębski)Recenzja: Andrzej Witkowski, Podatki państwowe w Polsce w latach 1944-1950, 2005 (Robert Jastrzębski
Gliwiczia skvortzowii Kulikovskiy, Lange-Bertalot & Witkowski 2013, sp. nov.
No full text<i>Gliwiczia skvortzowii</i> Kulikovskiy, Lange-Bertalot & Witkowski <i>sp. nov.</i> Figs. 1–42 <p>Frustules with a horse shoe-like internal cavum at both raphe and rapheless valve as characteristic of the genus. Valves broadly elliptical with broadly to weakly cuneately rounded ends. Length 12–24 µm, breadth 8–13 µm.</p> <p>LM, raphe valve (Figs 20–32): Raphe filiform, straight, external central ends slightly expanded, distal ends shortly indistinctly deflected. Axial area narrow, linear, proximally broadening into a deltoid shape. Central area rhombi at the central nodule forming ca. 1.5 µm broad stauros to the valve margin unilaterally; on the opposite side the stauros appears interrupted by the elliptical cavum, at the margin (but see SEM, external view Figs 33, 34). Striae 24–25 in 10 µm, radiate throughout with several intercalated short ones at the margins proximally. Areolae punctate, ca. 30 in 10 µm.</p> <p>LM, rapheless valve (Figs 1–19): Axial and proximal central area rhombic-lanceolate; central area forming a stauros unilaterally which appears obscured on the opposite side by an elliptical cavum. Striae ca. 24 in 10 µm, becoming progressively radiate from proximal towards distal part of the valve; no shorter striae intercalated at margins. Areolae irregularly spaced, considerably coarser than in raphe valves, 15–18 in 10 µm. SEM, raphe valve, external view (Figs 33–36): Raphe with small external central pores and distal ends more or less distinctly to opposite sides deflected. Distal ends may be pore-like expanded at a junction between the valve face and the mantle. The stauroid central area appears clearly asymmetrical becoming expanded towards the margin at that side where the cavum lies internally. Areola foramina are circular and open.</p> <p>SEM, raphe valve, internal view (Figs 37–40): Central raphe ends deflected clearly to opposite sides as generally characteristic for achnanthoid and cocconeoid monoraphid genera. The stauros together with the raphe sternum is strongly elevated above the internal valve surface. The conspicuous cavity is opened by a relatively small aperture. Areolae uniseriate, small, approximately circular. Occlusion membranes visible or destroyed.</p> <p>SEM, rapheless valve, internal view (Figs 41–42): The relief-like appearance of the rhombical sternum, stauros and cavum generally as in the raphe valve. Areola pattern differs from raphe valves by larger apertures lying in crater-like depressions, becoming smaller and transapically elongated at valve mantles. Occlusion membranes have become corroded more or less strongly.</p> <p>Type: slide no. 15645m (holotypus here designated see Fig. 2) in collection Maxim Kulikovskiy, I.D. Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences (IBIW) 20.07.1965, leg. A.P. Skabitschewsky.</p> <p>Isotype: slide no. 15645a in collection Andrzej Witkowski, Institute of Marine Sciences, University of Szczecin (SZCZ).</p> <p>Distribution: As yet known only from the Lake Baikal.</p> <p>Etymology: This species dedicated to Boris Skvortzow one of the pioneers of the diatomological studies in Lake Baikal.</p>Published as part of <i>Kulikovskiy, Maxim, Lange-Bertalot, Horst & Witkowski, Andrzej, 2013, Gliwiczia gen. nov. a new monoraphid diatom genus from Lake Baikal with a description of four species new for science, pp. 1-16 in Phytotaxa 109 (1)</i> on pages 3-5, DOI: 10.11646/phytotaxa.109.1.1, <a href="http://zenodo.org/record/5078671">http://zenodo.org/record/5078671</a>
Fogedia Witkowski, Lange-Bertalot, Metzeltin & Bafana 1997
No full textKey to species of the genus Fogedia 1a Cells are heterovalvate.............................................................................................................................................. F. heterovalvata 1b Cells are not heterovalvate.................................................................................................................................................................2 2a Valves with lateral area.......................................................................................................................................................................3 2a Valves without lateral area..................................................................................................................................................................9 3a Central area with stauros-like transverse expansion..........................................................................................................................4 3b Central area without transverse expansion.........................................................................................................................................5 4a Striae 16-18 in 10 μm............................................................................................................................................................. F. acuta 4b Striae 9-13, Areolae 35-40 in 10 μm............................................................................................................................. F. finmarchica 4c Striae 10-12, Areolae 26-29 in 10 μm.............................................................................................................................. F. krammeri 5a External terminal raphe fissure hooked..............................................................................................................................................6 5b External terminal raphe fissure simple or slightly bent......................................................................................................................8 6a Areolae 26-29 in 10 μm............................................................................................................................................................. F. lyra 6b Areolae 35-40 in 10 μm......................................................................................................................................................................7 7a Valves 15.5-18.5 μm long, 6.5-7 μm wide.................................................................................................................. F. christensenii 7b Valves 26-37 μm long, 8-9 μm wide............................................................................................................................... F. giffeniana 8a Striae parallel in the middle of the valve................................................................................................ F. giffeniana var. yemenitica 8b Striae radiate in the middle of the valve.......................................................................................................................... F. geisslerae 9a Valves elliptic with broad apices........................................................................................................................................ F. elliptica 9b Valves with distinctively protracted apices......................................................................................................................................10 10a Striae parallel in the middle of the valve.......................................................................................................................... F. orientalis 10b Striae radiate in the middle of the valve...........................................................................................................................................11 11a Striae 12-14, Areolae 15 in 10 μm...................................................................................................................................... F. coreana 11b Striae 18-21, Areolae 21-24 in 10 μm.................................................................................................................................... F. densaPublished as part of Kim, Hyesuk, Khim, Jong Seong, Witkowski, Andrzej & Park, Jinsoon, 2022, A new species of Fogedia (Bacillariophyceae) from tidal flats of Northeast Asia, pp. 77-84 in Phytotaxa 554 (1) on pages 82-83, DOI: 10.11646/phytotaxa.554.1.6, http://zenodo.org/record/680982
A new species of Fogedia (Bacillariophyceae) from tidal flats of Northeast Asia
No full textKim, Hyesuk, Khim, Jong Seong, Witkowski, Andrzej, Park, Jinsoon (2022): A new species of Fogedia (Bacillariophyceae) from tidal flats of Northeast Asia. Phytotaxa 554 (1): 77-84, DOI: 10.11646/phytotaxa.554.1.6, URL: http://dx.doi.org/10.11646/phytotaxa.554.1.
Cymatosirella benguelensis Dabek & Witkowski 2013, sp. nov.
No full textCymatosirella benguelensis Dąbek & Witkowski sp. nov. (Figs 23–33 [LM], Figs 34–43 [SEM]) Frustules rectangular in girdle view with undulate outline. Valves lanceolate, 4–12 µm long and 1–4 µm wide. Valve surface areolated with a ring of areolae present along the valve margin, 15–26 in 10 µm; some areolae irregularly scattered over valve face. Type: — SOUTH AFRICA. Western Cape Province: Lamberts Bay, sand from the intertidal flat (32°5'179''S; 18°18'701''E), collected on 16 th February 2011, by Dąbek, Witkowski & Archibald (SZCZ 17497, holotype!). Habitat: —Lamberts Bay is located about 280 km north of Cape Town and is influenced by Atlantic Ocean water masses, part of the Benguela Current upwelling zone. Coastal water temperature rarely exceeds 19° C, salinity is ca. 35 ‰. Beaches are sandy, occasionally with rocky outcrops and tidal pools. Climate is moderate with hot and dry summers and wet, rainy and cold winters. Etymology: —Named after the Benguela Current (Atlantic Ocean) which washes the west coast of South Africa. Observations: —The frustules are rectangular in girdle view with an undulate outline (Figs 23–28, 34– 36). There is a single, large plastid per cell (Figs 32, 33). Cells solitary or forming small ribbon-like colonies with 2–4 cells (Figs 27, 32, 33). The girdle is composed of 8–11 bands each with a single row of poroids (Figs 34–36). The valves are lanceolate (Figs 29–31, 36–40), 4–12 µm long and 1–4 µm wide. A marginal ring of areolae (15–26 in 10 µm) is present along the valve margin; other areolae are irregularly scattered across the valve face but less so in around the slightly raised centre of the valve (Figs 37–40). The areolae are more densely packed near the apices. Externally, the areolae are closed by simple volate occlusions (Figs 40, 42, 43). The ocelluli are composed of 12–14 porelli in the largest specimens and 6–8 in the smallest, with 3 central porelli (Figs 36, 39, 41). Hyaline rings around ocelluli are present (Figs 37, 41). Spines are probably hollow and tapered and are located in the central part of the valve and along the valve margin (Figs 40, 42, 43). Processes, pili, pseudosepta nor fascia have not been observed. Ecology and geography: — Cymatosirella benguelensis was most abundant in a sand sample from Lamberts Bay (SZCZ 17497) from an intertidal pool located close to rocky outcrops. A few valves were also observed in a sample from Elands Bay (SZCZ 17518). Cymatosirella benguelensis most probably belongs to the epipsammon.Published as part of Dąbek, Przemysław, Sabbe, Koen, Witkowski, Andrzej, Archibald, Colin, Kurzydłowski, Krzyszof J. & Zgłobicka, Izabela, 2013, Cymatosirella Dąbek, Witkowski & Sabbe gen. nov., a new marine benthic diatom genus (Bacillariophyta) belonging to the family Cymatosiraceae, pp. 42-56 in Phytotaxa 121 (1) on pages 49-50, DOI: 10.11646/phytotaxa.121.1.2, http://zenodo.org/record/507946
Cymatosirella taylorii Dabek & Witkowski 2013, sp. nov.
No full text<i>Cymatosirella taylorii</i> Dąbek & Witkowski <i>sp. nov.</i> (Figs 44–51 [LM], Figs 52–58 [SEM]) <p>Frustules rectangular in girdle view with undulated outline. Valves lanceolate to elliptical, 4–13 µm long and 1–4 µm wide. Central part of valve face and apices elevated. Valve surface areolated, with ca. 50 areolae in 10 µm. Areolae distributed over the whole valve face.</p> <p> <b>Type:</b> — SOUTH AFRICA. Western Cape Province: eastern part of Langebaan Lagoon, Saldanha Bay, sandy sediment from the intertidal sandbank (33°6’788’’S; 18°2’631’’E) collected on 19 th February 2011 by Dąbek, Witkowski & Archibald (SZCZ 17582, holotype!).</p> <p> <b>Habitat:</b> —The eastern part of Langebaan Lagoon is a shallow, sandy tidal pool. High and low tide occur twice a day. Sea surface water temperature exceeds 18° C</p> <p> <b>Etymology:</b> —Named after and dedicated to our friend and prominent South African diatomologist Dr. Jonathan Taylor (North-West University, Potchefstroom, South Africa).</p> <p> <b>Observations:</b> —The frustules are rectangular in girdle view with an undulated outline (Figs 44–47, 52). Cells are predominantly solitary, but occasionally two cells were found joined together (Fig. 44). The girdle is broad, and composed of numerous bands bearing one row of fine puncta (Fig. 52). The valves are lanceolate to elliptical, 4–13 µm long and 1–4 µm wide (Figs 48–51, 53). The central part of the valve face and apices are elevated (Figs 54, 56). The valve surface is strongly ornamented with areolae, ca. 50 in 10 µm (Figs 53–56). Near the central elevation, areolae are randomly distributed; further towards the apices they are arranged in longitudinal rows (Figs 53, 55, 56). Occlusions have not been observed. Each valve bears two ocelluli, composed of 7–10 porelli, with 1–2 central ones (Figs 57, 58). The ocelluli are surrounded by a hyaline ring of silica (Figs 53, 55, 57). No areolae occur near the ocelluli (Figs 53, 57). Spines were observed only rarely. Processes, pili, fascia nor pseudosepta have not been observed.</p> <p> <b>Ecology and geography:</b> — <i>Cymatosirella taylorii</i> has been found in only one sandy sample (SZCZ 17582, the holotype) from an intertidal sandbank in the eastern part of the Langebaan Lagoon. Only a dozen valves have been found. This species most probably belongs to the epipsammon.</p>Published as part of <i>Dąbek, Przemysław, Sabbe, Koen, Witkowski, Andrzej, Archibald, Colin, Kurzydłowski, Krzyszof J. & Zgłobicka, Izabela, 2013, Cymatosirella Dąbek, Witkowski & Sabbe gen. nov., a new marine benthic diatom genus (Bacillariophyta) belonging to the family Cymatosiraceae, pp. 42-56 in Phytotaxa 121 (1)</i> on page 50, DOI: 10.11646/phytotaxa.121.1.2, <a href="http://zenodo.org/record/5079466">http://zenodo.org/record/5079466</a>
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