A partir de cette page vous pouvez :
| Retourner au premier écran avec les dernières notices... |
Détail de l'auteur
Auteur Andrzej Lysko |
Documents disponibles écrits par cet auteur
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 : Livre 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 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
in Acta botanica gallica > vol. 162, n°4 (Année 2015) . - pp. 324-337[article]Exemplaires
Cote Localisation Disponibilité P0177-6 Brest Exclu du prêt 
Titre : Seed morphometric characteristics of European species of Elatine (Elatinaceae) Type de document : Livre 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 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
in PeerJ > 5 (Mai 2017) . - e3399[article]Exemplaires
Cote Localisation Disponibilité aucun exemplaire
Titre : The distribution of Elatine macropoda Guss. (Elatinaceae) Type de document : Livre Auteurs : Agnieska Popiela, Auteur ; Andrzej Lysko, Auteur Année de publication : 2010 Article en page(s) : pp. 81-86 Langues : Anglais Catégories : [Espèces (in biblio)] Elatinaceae
[Espèces (in biblio)] Elatine macropoda Guss.
[Thèmes] Bassin méditerranéenMots-clés : plante vasculaire aire de répartition comparaison d'espèces Résumé : "Data on distribution of Elatine macropoda Guss. are given, listing distribution map and a list of localities. Disjunctive distribution pattern of the species within the Mediterranean region as well as distribution of other species of the section Elatinella Seub. and the genera suggests a long history of the range formation." (source : auteurs) Type de publication : périodique Référence biblio : Popiela A., Lysko A., 2010 - The distribution of Elatine macropoda Guss. (Elatinaceae). Acta societatis botanicorum poloniae, 79 (1) : 81-86. ID PMB : 65357 DOI : 10.5586/asbp.2010.011 En ligne : https://pbsociety.org.pl/journals/index.php/asbp/article/view/asbp.2010.011 Format de la ressource électronique : document Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=65357
in Acta societatis botanicorum poloniae > vol. 79, n°1 (Année 2010) . - pp. 81-86[article]Exemplaires
Cote Localisation Disponibilité aucun exemplaire
