New Combinations and Type Analysis of<i>Chamaepinnularia</i>Species (Bacillariophyceae) from Aerial Habitats

Wetzel, Carlos E.; Martínez‐Carreras, Núria; Hlúbiková, Daša; Hoffmann, Lucien; Pfister, Laurent; Éctor, Luc

doi:10.7872/crya.v34.iss2.2013.149

Cited by 21 publications

(15 citation statements)

References 35 publications

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“…Externally, distinguishable single-row striae are formed out of one large areola create foramina, occluded by vela. Internally, striae are open with silica bridges (lange-Bertalot & metzeltin 1996;Wetzel et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Taxonomic revision of Chamaepinnularia krookiformis Lange-Bertalot et Krammer with a description of Chamaepinnularia plinskii sp. nov.

Żelazna-Wieczorek¹,

Olszyński²

2016

Fottea

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Abstract:The benthic diatoms collected during our recent research in athalassic habitats exemplify a high morphological variability within Chamaepinnularia krookiformis lange-Bertalot et krammer. The species has already been known from freshwater ecosystems as well as from brackish waters in different regions of Europe. This variability has been also confirmed by the analysis of the literature. However, this is the first time that the morphological variability of the species has been addressed. In order to revise C. krookiformis and describe a new species, which has been distinguished on the basis of our material, we compared it with the type material of Pinnularia krookiformis krammer 1992 from the periodic saline pool in Nordrhein-Westfalen (Germany). This study deals with a morphological analysis based on a large populations of C. krookiformis from Pełczyska (Central Poland). Selected morphological features were analysed, i.e.: valve length and width, number of striae in 10 µm, apices width, constrictions width, apices/constrictions width ratio, central-area length, and valve/central area length ratio. The results of light (LM) and scanning (SEM) microscopy, supported by multidimensional scaling (MDS), allowed for the distinction of three different morphotypes. Two of them match krammer concept of Pinnularia krookiformis from 1992, while the third, occurring in our samples in three sampling sites, is clearly different. Thus, we described a new species Chamaepinnularia plinskii sp. nov., by the following major features: the valves are linear, symmetric, with rounded, capitate apices, the axial area is narrow, expanding to a wide central area forming a fascia, distal raphe endings are hooked to the same side of the valve and striae slightly radiate in the middle and in the rounded apices, becoming parallel in constrictions, 20-26 in 10 µm. This species occurs in inland waters with a wide range of chloride concentration, from 1000 to 3500 mg.l -1.

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Section: Introductionmentioning

confidence: 99%

“…Wetzel et ector, and C. ventosa (hustedt) c.e. Wetzel et ector (Wetzel et al 2013) were transferred to Chamaepinnularia.…”

Section: Introductionmentioning

confidence: 99%

Taxonomic revision of Chamaepinnularia krookiformis Lange-Bertalot et Krammer with a description of Chamaepinnularia plinskii sp. nov.

Żelazna-Wieczorek¹,

Olszyński²

2016

Fottea

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“…Diatom identifications were based on following taxonomic references: Ettl & Gärtner 2014 2013; Wetzel et al (2015Wetzel et al ( , 2013.…”

Section: Sample Collection Preparation and Diatom Identificationmentioning

confidence: 99%

“…Also, Antonelli et al (2017) took soil diatom samples at 34 locations across the whole basin, while Barragán, Wetzel & Ector (2018) sampled around four of those to test a new sampling strategy. As a result of those studies, several new species were discovered and described (Barragán, Ector & Wetzel, 2017;Wetzel et al, 2014Wetzel et al, , 2013. In spite of previous efforts, a full, detailed characterization of terrestrial diatoms over the catchment and across seasons is lacking.…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial variability of terrestrial diatoms at the catchment scale: controls on communities

Foets

Wetzel

Teuling

et al. 2020

PeerJ

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Diatoms are generally regarded as inhabitants of water bodies. However, numerous taxa are able to survive and reproduce in a variety of non-aquatic ecosystems. Although terrestrial diatoms are discussed extensively in the literature, most of those studies covered floristic aspects and few information exists on their ecology. This lack of knowledge thwarts their potential use as environmental markers in various applications. As a way forward, we investigated the seasonal patterns and the role of different disturbances on the community composition. We collected soil diatom samples in 16 sites across the Attert River basin (Luxembourg) every 4 weeks for a period of 14 months. Our results indicate that forests create a stable microhabitat for diatoms and that temporal variation of the diatom communities is mainly controlled by farming practices rather than seasonal changes in environmental variables. We also found out that communities need one to 2 months to reestablish a new, stable community after a significant change in the environment. We were able to confirm the applicability of the Pollution-Sensitivity Index (IPS) to identify anthropic disturbances.

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“…2-3 µm; S: 23-26 in 10 µm) but these are narrower and generally less finely striated. Wetzel et al (2013) revised several small Chamaepinnularia taxa but none of them entirely match the Antarctic populations. Most likely these Antarctic populations represent more than one new species but detailed SEM investigations will be necessary to clarify their identity.…”

Section: Chamaepinnularia Krookiformis (Krammermentioning

confidence: 99%

An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region)

Sterken¹,

Verleyen²,

Jones³

et al. 2015

Plecevo

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Background and aims: Non-marine diatom communities in the Antarctic Region are characterized by a typical species composition, dominated by a large number of Antarctic endemic species. Despite recent advances in our knowledge about the diversity and biogeography of non-marine Antarctic diatoms, the flora of many Antarctic localities is still only poorly known, which can result in incorrect conceptions of species' distributions. The present paper provides a taxonomically consistent illustrated checklist of the diatom flora observed in recent and (sub)fossil non-marine sediments of three islands in the proximity of the northern Antarctic Peninsula, namely; Signy Island (South Orkneys), Livingston Island (South Shetlands) and Beak Island (James Ross Island group). Methods: The diatom flora of 66 samples collected from a wide variety of lakes and localities on the three above-mentioned islands has been studied using light and scanning electron microscopy. The biogeographical distribution of the composing taxa has been assessed on the basis of quality-checked distribution data from the recent literature. Key results - One hundred and two diatom taxa, belonging to thirty-four genera, were observed. Pinnularia (twelve taxa), Chamaepinnularia, Luticola, Planothidium, Psammothidium and Stauroneis (seven taxa each), Nitzschia (six taxa), Humidophila and Navicula (five taxa each) proved to be the most species-rich genera. Original morphometric data (including length, width and stria density) and illustrations are presented for all taxa observed. Forty-one species are hitherto only known from the Antarctic region. The exact taxonomic identity of twenty species remains uncertain and requires further study. It is suspected that many of these will also turn out to be restricted to the Antarctic region, suggesting that about half of all taxa observed are probably endemic to the Antarctic. Conclusions: The diatom flora of the three investigated localities comprises a large proportion of typical Antarctic taxa, many of which have only recently been split off from their presumably cosmopolitan relatives

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New Combinations and Type Analysis ofChamaepinnulariaSpecies (Bacillariophyceae) from Aerial Habitats

Cited by 21 publications

References 35 publications

Taxonomic revision of Chamaepinnularia krookiformis Lange-Bertalot et Krammer with a description of Chamaepinnularia plinskii sp. nov.

Taxonomic revision of Chamaepinnularia krookiformis Lange-Bertalot et Krammer with a description of Chamaepinnularia plinskii sp. nov.

Temporal and spatial variability of terrestrial diatoms at the catchment scale: controls on communities

An illustrated and annotated checklist of freshwater diatoms (Bacillariophyta) from Livingston, Signy and Beak Island (Maritime Antarctic Region)

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