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Auteur Agnieska Popiela |
Documents disponibles écrits par cet auteur (6)
trié(s) par (Pertinence décroissant(e), Titre croissant(e)) Affiner la rechercheDistribution, morphology and habitats of Elatine triandra (Elatinaceae) in Europe, with particular reference to the central part of the continent / Agnieska Popiela in Acta botanica gallica, vol. 162, n°4 (Année 2015)
Titre : Distribution, morphology and habitats of Elatine triandra (Elatinaceae) in Europe, with particular reference to the central part of the continent Type de document : texte imprimé Auteurs : Agnieska Popiela, Auteur ; Andrzej Lysko, Auteur ; Attila Molnar, Auteur ; Zygmunt Kacki, Auteur ; Balázs Andras Lukacs, Auteur Année de publication : 2015 Article en page(s) : pp. 324-337 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Elatine triandra
[Thèmes] PhytogéographieMots-clés : chorologie végétation morphologie cartographie phénologie Résumé : "Elatine triandra Schkuhr is the most variable and widespread species within the genus Elatine L.; it has been recorded in all continents, except Antarctica, but it is mainly located in Europe. The study is based on an extensive data set of European literature, herbaria and web data that covers the period 1828–2012. The range of the species in Europe is disjunctive, covering the southern and western parts of the Central European Plain and the southern part of the Fennoscandian Shield. At a smaller scale, the species can also be found along some river valleys. In Central Europe many localities, particularly isolated ones in the northern part of the range, are now only historical. From the data set we determined that E. triandra may be best observed between May and October. We found that species records show a near-significant shift since 1828. Depending on the environmental conditions, individuals of the taxon develop as one of two morphs: terrestrial or aquatic. The aquatic morph is characterized by stems, internodes, lamina and petiole that are twice as long as those of the terrestrial form. Elatine triandra seeds show consistent characteristics, both in terms of morphs and populations. Our studies show that the best diagnostic features, in addition to the construction of flowers, are the size, shape and surface structure of seeds. In Central Europe, E. triandra occurs exclusively in communities classified as Isoëto-Nano-Juncetea." (source : auteurs) Type de publication : périodique Référence biblio : Popiela A., Lysko A., Molnar A., Kacki Z., Lukacs B., 2015 - Distribution, morphology and habitats of Elatine triandra (Elatinaceae) in Europe, with particular reference to the central part of the continent. Acta botanica gallica, 162 (4) : 324-337. ID PMB : 62016 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=62016
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Titre : Molecular phylogenetics, seed morphometrics, chromosome number evolution and systematics of European Elatine L. (Elatinaceae) species Type de document : texte imprimé Auteurs : Gábor Sramkó, Auteur ; Attila Molnar, Auteur ; János Pál Tóth, Auteur ; Levente Laczkó, Auteur ; Anna Kalinka, Auteur ; Orsolya Horváth, Auteur ; Lidia Skuza, Auteur ; Balázs Andras Lukacs, Auteur ; Agnieska Popiela, Auteur Année de publication : 2016 Article en page(s) : e2800 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Elatinaceae Mots-clés : hybridation phylogénie évolution Résumé : "The genus Elatine contains ca 25 species, all of which are small, herbaceous annuals distributed in ephemeral waters on both hemispheres. However, due to a high degree of morphological variability (as a consequence of their amphibious life-style), the taxonomy of this genus remains controversial. Thus, to fill this gap in knowledge, we present a detailed molecular phylogenetic study of this genus based on nuclear (rITS) and plastid (accD-psaI, psbJ-petA, ycf6-psbM-trnD) sequences using 27 samples from 13 species. On the basis of this phylogenetic analysis, we provide a solid phylogenetic background for the modern taxonomy of the European members of the genus. Traditionally accepted sections of this tree (i.e., Crypta and Elatinella) were found to be monophyletic; only E. borchoni—found to be a basal member of the genus—has to be excluded from the latter lineage to achieve monophyly. A number of taxonomic conclusions can also be drawn: E. hexandra, a high-ploid species, is most likely a stabilised hybrid between the main sections; E. campylosperma merits full species status based on both molecular and morphological evidence; E. gussonei is a more widespread and genetically diverse species with two main lineages; and the presence of the Asian E. ambigua in the European flora is questionable. The main lineages recovered in this analysis are also supported by a number of synapomorphic morphological characters as well as uniform chromosome counts. Based on all the evidence presented here, two new subsections within Elatinella are described: subsection Hydropipera consisting of the temperate species of the section, and subsection Macropodae including the Mediterranean species of the section." (source : auteurs) Type de publication : périodique Référence biblio : SRAMKÓ G., MOLNAR A., PÁL TÓTH J., LACZKÓ L., KALINKA A., HORVÁTH O., SKUZA L., ANDRAS LUKACS B., POPIELA A., 2016 - Molecular phylogenetics, seed morphometrics, chromosome number evolution and systematics of European Elatine L. (Elatinaceae) species. PeerJ, 4 : e2800 ; DOI 10.7717/peerj.2800 ID PMB : 65363 DOI : 10.7717/peerj.2800 En ligne : https://peerj.com/articles/2800/ Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65363
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Titre : Resurrection and typification of Elatine campylosperma (Elatinaceae), a longforgotten waterwort species Type de document : texte imprimé Auteurs : Attila Takács, Auteur ; Attila Molnar, Auteur ; Balázs Andras Lukacs, Auteur ; Timea Nagy, Auteur ; Adam Lovas-Kiss, Auteur ; Andy J. Green, Auteur ; Agnieska Popiela, Auteur ; Lajos Somlyay, Auteur Année de publication : 2018 Article en page(s) : e4913 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Elatinaceae
[Thèmes] Bassin méditerranéen
[Thèmes] TaxonomieMots-clés : biogéographie écologie plante aquatique Résumé : "The name Elatine campylosperma Seub. is generally treated as one of the synonyms of E. macropoda Guss. However, recent morphological, phylogenetic and karyological studies indicate that this judgement should be revised. In the present paper we typify the name E. campylosperma, review its taxonomic history and provide a thorough description, with compilation of previously published data and our new measurements from in vitro cultures. Based on our herbarium survey, we outline its Atlantic-Mediterranean distribution area (Spain, France, Italy, Greece, Turkey and Algeria). Habitat preferences are summarized from our field observations, water quality measurements and the label information of the herbarium specimens examined. Intact E. campylosperma seeds were found in faecal samples of the Eurasian Coot (Fulica atra L.) in southern Spain and two of them were germinated, suggesting that E. campylosperma has a capacity for long distance dispersal via endozoochory." Type de publication : périodique Référence biblio : Takács A., Molnar A., Lukacs B., Nagy T., Lovas-Kiss A., Green A., Popiela A., Somlyay L., 2018 - Resurrection and typification of Elatine campylosperma (Elatinaceae), a longforgotten waterwort species. PeerJ, 6 : e4913. DOI : 10.7717/peerj.4913/https://doi.org/10.7717/peerj.4913 En ligne : https://peerj.com/articles/4913/ Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=67401
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Titre : Seed morphometric characteristics of European species of Elatine (Elatinaceae) Type de document : texte imprimé Auteurs : Agnieska Popiela ; Andrzej Lysko ; Bożenna Białecka ; Magdalena Marta Bihun ; Gábor Sramkó ; Waldemar Staron ; Anetta Wieczorek ; Attila Molnar Année de publication : 2017 Article en page(s) : e3399 Langues : Anglais (eng) Catégories : [Espèces (in biblio)] Elatinaceae
[Thèmes] TaxonomieMots-clés : espèce végétale amphibie clé de détermination micromorphologie morphologie population graine Résumé : "Elatine L. contains ca. 25 small, herbaceous, annual species distributed in ephemeral waters in both hemispheres. All species are amphibious and characterized by a high degree of morphological variability. The importance of seed morphology in Elatine taxonomy has been emphasized by many authors. The degree of seed curvature and seed coat reticulation have been traditionally considered very important in recognizing individual species of this genus. Seed morphometric characteristics of 10 Elatine species, including all European native taxa, are provided on the basis of material from two or three populations of each species. A total of 24–50 seeds were studied from each population, altogether 1,260 images were used for the morphometric study. In total, six parameters were measured from SEM pictures: object surface area, profile specific perimeter (object circuit), rectangle of the object (a) length, rectangle of the object (b) width, angle of the seed curvature, and number of pits in the seed coat counted in the middle row. Our study shows that the range of morphological variation of seeds in European species of Elatine is great, both between the species and the populations. Discrimination analysis showed that all six traits significantly differentiate the populations studied (λ = 0.001, p < 0.001), and the greatest contributions were “number of pits”, “rectangle_a”, and “the angle curvature”. Multidimensional scaling based on a correlation matrix of Mahalanobis distance of the six features studied revealed the greatest similarity between the three populations of E. alsinastrum, E. macropoda, and E. hexandra. Regarding interspecific differences, a Kruskal–Wallis tests showed that, in many cases, lack of statistically significant differences between species relative to the studied seed traits. If distinction of species is only based on seeds, especially if only a few seeds are evaluated, the following species pairs can be easily confused: E. alsinastrum and E. orthosperma, E. hexandra and E. macropoda, E. campylosperma and E. hydropiper, as well and E. gussonei and E. hungarica. We found no diversity in seed coat micromorphology within pits that could have potential taxonomic importance. An identification key and descriptions of species are provided on the basis of seeds traits." (source : auteurs) Type de publication : périodique Référence biblio : Popiela A., Lysko A., Białecka B., Bihun M., Sramkó G., Staron W., Wieczorek A., Molnar A., 2017 - Seed morphometric characteristics of European species of Elatine (Elatinaceae). PeerJ, 5 : e3399. DOI : https://doi.org/10.7717/peerj.3399 En ligne : https://peerj.com/articles/3399/ Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=67270
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Titre : The distribution of character species of the Isoëto-Nanojuncetea class in Poland, part 4. Limosella aquatica, Cyperus fuscus and Juncus capitatus Type de document : texte imprimé Auteurs : Agnieska Popiela, Auteur Année de publication : 2001 Article en page(s) : pp. 155-159 Langues : Anglais (eng) Catégories : [ZG] Pologne
[Espèces (in biblio)] Cyperus fuscus L.
[Espèces (in biblio)] Juncus capitatus Weigel
[Espèces (in biblio)] Limosella aquatica L.
[Thèmes] Flore vasculaire (phanérogames et cryptogames vasculaires)Mots-clés : plante rare aire de répartition Isoëto-Nanojuncetea Résumé : "Distribution maps for Limosella aquatica L., Cyperus fucus L. and Juncus capitatus Weigel. based on all accessible data were made and are discussed. Brief descriptions of their habitats and general distributions are also given. Nowadays these species are classified as endangered. The disappearance and transformation of habitats is presumably the main reason for their absence in some areas of Poland." (source : auteur) Type de publication : périodique Référence biblio : Popiela A., 2001 - The distribution of character species of the Isoëto-Nanojuncetea class in Poland, part 4. Limosella aquatica, Cyperus fuscus and Juncus capitatus. Polish Botanical Journal, 46 (2) : 155-159. ID PMB : 62524 En ligne : http://bomax.botany.pl/pubs/data/article_pdf?id=737 Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=62524
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