The Ways of the Diaspora in the narrative of Claudio Magris – One of the themes in the works of Claudio Magris is that of the frontiers between nations which have been divided by arbitrary political decisions. This is the case with Central Europe, which forms a sort of transnational melting pot and which has hosted the Hebrew Diaspora. The theme of the Diaspora plays a key role in many of Magris books, in particular Lontano da dove. In his recent novel, Non luogo a procedere, one of the topics is the slave trade, a sort of African Diaspora.
We test the application of dendrochronological methods for dating and assessing the environmental impacts of tsunamis in polar regions, using an example of the 21 November 2000 landslide−generated tsunami in Vaigat Strait (Sullorsuaq Strait), West Greenland. The studied tsunami inundated a c . 130 m−wide coastal plain with seawater, caused erosion of beaches and top soil and covered the area with an up to 35 cm−thick layer of tsunami deposits composed of sand and gravel. Samples of living shrub, Salix glauca (greyleaf willow) were collected in 2012 from tsunami−flooded and non−flooded sites. The tree−ring analyses reveal unambiguously that the tsunami−impacted area was immediately colonized during the following summer by rapidly growing shrubs, whilst one of our control site specimens records evidence for damage that dates to the time of the tsunami. This demonstrates the potential for dendrochronological methods to act as a precise tool for the dating of Arctic paleotsunamis, as well as rapid post−tsunami ecosystem recovery. The reference site shrubs were likely damaged by solifluction in the autumn 2000 AD that was triggered by high seasonal rainfall, which was itself a probable contributory factor to the tsunami−generating landslide.
The aim of the study was to determine species structure of aquatic bugs in four anthro-pogenic water reservoirs. Heteroptera structure observed in studied reservoirs was clearly differen-tiated, which refers to age of the ponds. Newly created water reservoirs become quickly colonized mainly by pioneering species Corixinae, which led to formation of taxonomic group population of density exceeding 2700 indiv. m-2. In older reservoirs there were fish, which potential predation pressure led to almost a complete decline of bugs. The reason of bugs poverty in water reservoirs colonized by fish was also probably a small habitat diversity, leading to lack of refuges from predators.
The Baltic Sea has always played a vital part in the history of Poland. In the light of the resolutions of the Yalta Conference, Poland’s boarders were shifted, including Western Pomerania in its territory. In 1945 Kołobrzeg was the most severely destroyed city on that territory. The city was either already ablaze or set on fire by German gangs active at that time. All its pre-war functions were non-existent. The harbour was immobilized, the economic basis fell apart. The city was devoided of water, power and food delivery was problematic. The newly-arrived Polish settlers perceived Kołobrzeg as a tragic and overwhelming image of a “dead city”. The area was dominated by debris, the stench of decomposing bodies of German soldiers and looters arriving from central Poland. The Wehrwolf pursued sabotages and the most terrifying Red Army committed crime and rapes. In the light of the population records and files of the Registry Office the inflow of people was rather slow during the first months, only to increase the pace in the following years. Many of them believed they would find employment rebuilding the city or in the harbour. The settlers had long been insecure about the temporary character of Poland in Western Pomerania and on the Baltic coast.
Arbuscular mycorrizal (AM) fungi may enhance plant growth and polyphenol production, however, there have been limited studies on the relationships between root colonization of different fungal species and polyphenol production on cultivated Allium porrum (garden leek). The effects of inoculation of AM fungi spores from Rhizophagus intraradices, Giga -spora margarita, Glomus geosporum, Paraglomus occultum, Claroideoglomus claroideum, and Glomus species on colonization of garden leek roots and symbiotic changes in polyphenol production and plant growth were evaluated in greenhouse experiments. There were significant differences (p < 0.05) in colonization of leek roots by AM fungi species. The greatest level of root colonization was recorded on plants inoculated with R. intraradices (73%) and the lowest level on C. claroideum (3.2%). Significant differences (p < 0.05) in plant height were recorded between AM inoculated plants and the controls. Polyphenol levels differed significantly (p < 0.05) between garden leek plants inoculated with AM fungi and the non-inoculated controls. The percentage increases in polyphenol (a derivative of kaempferol) on garden leeks inoculated with G. geosporum relative to the untreated controls ranged from 28 to 1123%. Due to symbiosis with different AM species, other polyphenols decreased in some instances (negative values) and increased in others for values of up to 590%. Results showed that AM fungi species exhibited remarkable differences in polyphenol levels in garden leeks. The high polyphenol production by garden leek plants inoculated with G. geosporum, and Glomus species could be exploited for enhanced resistance of garden leeks to insects and diseases. This research highlights an understudied area, notably the relationships between AM fungal inoculations, root colonizations and polyphenol production in garden leeks. The findings can be utilized to improve pest resistance and the quality of garden leek plants.