scholarly journals Effect of geographic range discontinuity on taxonomic differentiation of Abies cilicica

2015 ◽  
Vol 84 (4) ◽  
pp. 419-430 ◽  
Author(s):  
Krystyna Boratyńska ◽  
Katarzyna Sękiewicz ◽  
Anna Katarzyna Jasińska ◽  
Dominik Tomaszewski ◽  
Grzegorz Iszkuło ◽  
...  

Three populations of <em>Abies cilicica</em> subsp. <em>isaurica</em> and four of <em>A. cilicica</em> subsp. <em>cilicica</em> were analyzed using 35 morphological and anatomical needle characters with the implementation of multivariate statistical methods to verify the differences between subspecies. Moreover, the possible geographic differentiation of <em>A. cilicica</em> subsp. <em>cilicica</em> populations from the East Taurus and Lebanon Mountains was examined. <em>Abies cilicica</em> subsp. <em>isaurica</em> has been distinguished from <em>A. cilicica</em> subsp. <em>cilicica</em> by its glabrous young shoots and resinous buds. We detected that needles of <em>A. cilicica</em> subsp. <em>isaurica</em> are longer, broader and thicker, with a higher number of stomata rows, and larger cells of the epidermis, hypodermis and endodermis than <em>A. cilicica</em> subsp. <em>cilicica</em>. Additionally, <em>A. cilicica</em> subsp. <em>isaurica</em> needles have frequently rounded to obtuse-acute apex and resinous canals positioned more centrally inside the mesophyll than needles of <em>A. cilicica</em> subsp. <em>cilicica</em>. This indicates that a set of most of the tested needle characters can be used to distinguish the subspecies; however, any of characters enable that when used separately. Morphological and anatomical distinctiveness between these two taxa justify their recognition at the subspecies rank. Additionally, the populations of <em>A. cilicica</em> subsp. <em>cilicica</em> from the East Taurus and Lebanon are morphologically different. This geographic differentiation of populations is congruent with results provided by genetic analyses of nuclear microsatellites markers (nSSR).

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Augusto Soares da Silva ◽  
Susana Afonso ◽  
Dafne Palú ◽  
Karlien Franco

Abstract Se constructions designate a set of polysemous constructions along a transitivity continuum marked by the clitic se that perform various functions: reflexive/reciprocal, middle, anticausative, passive, and impersonal. A counterpart of these constructions without the clitic – the null se construction – is also attested. Based on an extensive usage-feature and profile-based analysis, and using multivariate statistical methods, we analyze, considering Cognitive Grammar, the conceptual, structural, and lectal factors that determine the choice between overt and null se constructions. The results of the study show that the null constructions are far more frequent in Brazilian (BP) than in European Portuguese (EP). In BP, the focus on the moment of change is a crucial factor for the overt/null variation in reflexive/reciprocal, middle, anticausative, and impersonal constructions. If the moment of the change of state is profiled, the overt se construction is usually produced. If the moment of change is not profiled, the null se construction is preferred. External factors also play a role in the variation. Register is an important predictor for the observed variation of the anticausative construction, and the only predictor for the overt/null variation in the case of the passive construction. In EP, the null se variant is mainly limited to anticausative constructions. In all cases of null constructions, there is a shift to an absolute construal, which has an impact on the way that the transitivity continuum is conceptualized.


2002 ◽  
Vol 10 (4) ◽  
pp. 455-474 ◽  
Author(s):  
Cüneyt Güler ◽  
Geoffrey D. Thyne ◽  
John E. McCray ◽  
Keith A. Turner

Sign in / Sign up

Export Citation Format

Share Document