Kazimierz Wielki University in Bydgoszcz

About: Kazimierz Wielki University in Bydgoszcz is a education organization based out in Bydgoszcz, Poland. It is known for research contribution in the topics: Luminescence & Population. The organization has 1109 authors who have published 2923 publications receiving 19548 citations. The organization is also known as: Casimir the Great University & Uniwersytet Kazimierza Wielkiego w Bydgoszczy.

Spectroscopy of f?f radiative transitions of Y b3 + ions in ytterbium doped orthophosphates at ambient and high hydrostatic pressures

Abstract: Studies of absorption and luminescence spectra, and luminescence decay times of the intrashell f?f transitions of Y b3 + ions in bulk orthophosphates at different temperatures and at high hydrostatic pressures are presented. The spectroscopic properties of Y0.99Y b0.01PO4 crystal with a tetragonal zircon structure and Gd0.99Y b0.01PO4 and La0.95Y b0.05PO4 crystals with a monoclinic monazite structure are compared. Experiments at ambient pressure were performed at temperatures from 10 to 295?K whereas measurements at high pressure were performed in a diamond-anvil cell at 10?K with a pressure up to 160 kbar. The results reveal a high thermal and pressure stability of the optical properties of the examined crystals as well as the dependence of Y b3 + emission properties on the local symmetry of the site occupied by the ytterbium dopant.

Spatial Genetic Structure Within Two Contrasting Stands of Scots Pine (Pinus sylvestris L.)

Abstract: Abstract When considering neutral nuclear markers, genetic differentiation of Scots pine (Pinus sylvestris L.) populations is known to be low. The homogeneity arises particularly as an effect of common ancestry in a recent evolutionary history as well as an extensive gene flow, especially through pollen. However, within populations several other forces may shape the spatial distribution of genetic variation, including establishment history, environmental and silvicultural selection. These local forces are known to produce non-random spatial patterns of genetic variation, however little is known on fine-scale spatial genetic structure of Scots pine. In this study, two stands of this species with different establishment histories, selected within one larger population located in northern Poland were genotyped and analysed for genetic variation and within-stand spatial genetic structure. Results revealed no differences in genetic variation, although stands are separated about 60 km, suggesting that the two populations share a common genetic pool. The spatial genetic structure in both stands was found to be slightly different and was attributed to differences in the mode of populations’ establishments. Finally, results confirmed that gene flow in Scots pine is extensive, causing genetic homogeneity within a single population.

Taxonomic and geographic variation of the Pinus mugo complex on chloroplast microsatellite markers

Abstract: The high mountain plants of Central and Southern Europe survived the glacial periods in the same mountain ridges, but at lower altitudes and possibly covering larger areas than during interglacials. This implies a high level of species differentiation between isolated mountain ridges. Pinus mugo complex, which includes P. mugo s.s. (Alps, Sudetes, Carpathians, Dynaric Alps, and Rhodopes), P. uncinata (Pyrenees and Alps), and P. uliginosa (Sudetes and neighbouring mountain ridges) is a good group to examine such a scenario. We screened 44 populations across the geographic range of the complex, using 10 cpSSR markers to study (1) taxonomic relations among P. mugo s.s., P. uncinata, and P. uliginosa and (2) genetic and phylogeographic structure in P. mugo s.s. and P. uncinata. Allelic combinations of 87 size variants produced a total of 757 haplotypes. Haplotypic diversity was high and similar in every species (0.997, 0.986 and 0.991, respectively). The highest divergence between haplotypes was observed in P...