scholarly journals Harris lines of the tibia across centuries: a comparison of two populations, medieval and contemporary in Central Europe

2004 ◽  
Vol 34 (5) ◽  
pp. 279-284 ◽  
Author(s):  
S. Ameen ◽  
L. Staub ◽  
S. Ulrich ◽  
P. Vock ◽  
F. Ballmer ◽  
...  
2001 ◽  
Vol 103 (4) ◽  
pp. 265-273 ◽  
Author(s):  
Bernhard Kuch ◽  
Martin Bobak ◽  
Manfred Fobker ◽  
Ralf Junker ◽  
Arnold von Eckardstein ◽  
...  

Biologia ◽  
2009 ◽  
Vol 64 (4) ◽  
Author(s):  
Pavol Eliáš ◽  
Michal Hájek ◽  
Petra Hájková

AbstractShinnersia rivularis is reported as a new alien species of the Slovak flora. The species was found in the catchment water of a thermal spring at a site in Partizánske, part Veľké Bielice (West Slovakia) in 2002. In the year of discovery, plants formed single population of about 30 square metres of water surface of the canal discharging warm water from the spa. Two populations covering the area ca 90 square meters were found in 2007. A brief description of the species is given and its distribution in Central Europe is reviewed. So far, the species has been reported from only three localities in Central Europe, which are distributed in three countries: Austria, Hungary and Germany.


2011 ◽  
Vol 72 (2) ◽  
pp. 139-148 ◽  
Author(s):  
Krystyna Boratyńska ◽  
Adam Boratyński

The frequency of occurrence of abnormal, three- (or more) needle dwarf shoots of most southern and central European two-needle pine (<em>Pinus</em>) species were studied. No specimens with more than two-needle dwarf shoots were found in a population of <em>P. nigra </em>Arnold subsp. <em>salzmannii </em>(Dunal) Franco from the Iberian Peninsula and in two populations of <em>P. uliginosa</em> Neumann from the Sudeten Mountains in Central Europe. Single specimens were found within one population of <em>P. pinaster </em>Aiton from the Iberian Peninsula and among six populations of <em>P. sylvestris </em>L. from the Iberian Peninsula and Central Europe. Abnormal dwarf shoots mostly with three, but also four, five or six needles were found among 24 of 25 surveyed populations of <em>P. mugo </em>Turra and <em>P. uncinata </em>Ramond. The average frequency of specimens with at least one three-needle dwarf shoot was 24% for <em>P. mugo</em> and 20% for <em>P. uncinata</em>. The frequencies of occurrence varied significantly among studied populations and were highest in samples collected from the upper elevational range limits of the species in the mountains and near the northern limits of their ranges. The frequency of abnormal dwarf shoots in the same populations was significantly high in 2-3 consecutive years. Needles from three-needle dwarf shoots were not significantly shorter than those of two-needle shoots.


2016 ◽  
Vol 65 (1) ◽  
pp. 83-87 ◽  
Author(s):  
Zuzana Skoupá ◽  
Jan Kučera ◽  
Lucie Fialová ◽  
Vítězslav Plášek

Abstract Sporophytes were for the first time recorded in three populations of Dicranum tauricum in the Czech Republic. Until now, such records were extremely scarce in Central Europe. Two populations observed concurrently at nearby localities were found in markedly different phenophases, whereas two populations observed at different localities in spring and autumn seemed to develop synchronously. The sporophytes are illustrated with conventional and SEM photography.


2016 ◽  
Vol 58 (2) ◽  
pp. 83-105 ◽  
Author(s):  
Romana Prausová ◽  
Lucie Marečková ◽  
Adam Kapler ◽  
L’uboš Majeský ◽  
Tünde Farkas ◽  
...  

Abstract This study deals with populations of the European-South-Siberian geoelement Adenophora liliifolia (L.) A. DC. in the Czech Republic, Slovakia, Hungary, Romania, and Poland, where this species has its European periphery distribution. We studied the population size, genetic variability, site conditions, and vegetation units in which A. liliifolia grows. Recent and historical localities of A. liliifolia were ranked into six vegetation units of both forest and non-forest character. A phytosociological survey showed differences in the species composition among localities. Only a weak pattern of population structure was observed (only 22% of total genetic variation present at the interpopulation level, AMOVA analysis), with moderate values for gene diversity (Hj = 0.141) and polymorphism (P = 27.6%). Neighbor-joining and Bayesian clusterings suggest a similar genetic background for most of the populations from Slovakia, the Czech Republic, and Poland, contrary to the populations from Hungary, Romania, as well as two populations from Central and South Slovakia. This might be explained by a relatively recent fragmentation of the A. liliifolia populations in Central Europe. Nevertheless, it seems that several populations in Romania, South Hungary, and Slovakia were isolated for a longer period of time and their genetic differentiation is more evident.


2019 ◽  
Vol 30 (1) ◽  
pp. 33-42
Author(s):  
Janusz Nowacki ◽  
Hanna Panagiotopoulou-Stawnicka ◽  
Robert Rutkowski ◽  
Roman Wąsala

This study focuses on morphological and genetic differences between two central European subspecies of the noctuid moth Noctua interjecta Hübner: N. interjecta interjecta Hübner, 1803 from Transcarpathia in Ukraine and N. interjecta caliginosa (Schawerda, 1919) from Poland. While the morphological differences between these taxa are fairly obvious, individuals from these two populations were found to differ also genetically, as indicated by the cytochrome c oxidase I (COI) gene sequences. The Transcarpathian population exhibits solely the NImizH3 haplotype, but the Polish one the relatively distant NImizH1 and NImizH2 haplotypes. A Neighbour-Joining tree and a network of haplotypes separated the two haplotypes found in Poland (N. i. caliginosa) from those derived from NImizH3 (N. i. interjecta). The divergence time for these two groups was estimated as 400–600 thousand years before present, coinciding with the maximum extent of the Pleistocene ice-sheet covering Europe.


Methodology ◽  
2016 ◽  
Vol 12 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Gregor Sočan

Abstract. When principal component solutions are compared across two groups, a question arises whether the extracted components have the same interpretation in both populations. The problem can be approached by testing null hypotheses stating that the congruence coefficients between pairs of vectors of component loadings are equal to 1. Chan, Leung, Chan, Ho, and Yung (1999) proposed a bootstrap procedure for testing the hypothesis of perfect congruence between vectors of common factor loadings. We demonstrate that the procedure by Chan et al. is both theoretically and empirically inadequate for the application on principal components. We propose a modification of their procedure, which constructs the resampling space according to the characteristics of the principal component model. The results of a simulation study show satisfactory empirical properties of the modified procedure.


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