Because of the worldwide distribution of the Barn Owl (Tyto alba) and the easily way to find its pellets, it is often used to diet studies. To investigate the eco-geographical impact of mountainous areas on its diet, we conducted studies in the Jura, Alpes, Central and Pyrénées mountains and we also did pellet analysis from 8 sites in the Jura mountains. Analysis of the tooth and skull content of pellets allowed us to draw up two types of change in the diet of Tyto alba in correlation with mountain elevation. The first one concerns the Jura, Alpes and Central mountains, where the diversity of the diet declines with the increase in elevation. The second one concerns the Pyrénées mountains, where there is no change in the diversity of the diet, perhaps because of the higher diversity of small mammals caused by mediterranean influence. Thus, it seems that elevation cau ses a decrease in diet diversity of Tyto alba in continental mountains (Jura, Alpes and Central mountains) probably because of more homogeneous landscapes dedicated to grass production. However, in Mediterranean mountains (Pyrénées), a more diversified small mammal guild provides a constant level of diet diversity.
Banat, a region situated in the western and south-western extremity of Romania, benefits from a defense network of meteorological stations in which a meteorological long-term monitoring activity of approximately 150 years is being carried out. Geographical position and diversity of physico-geographical conditions, under the influence of atmospheric circulation factors, determine both the major features of the climate in this region, as well as its local nuances. In order to analyze the spatial and temporal distribution of air temperature in Banat, we collected data strings and continuous meteorological observations from 14 weather stations in this area over a 35 years period (1979-2013). In Banat the air temperature regime presents a series of particularities and a patchy distribution as a result of the interaction of dynamic processes with the great diversity of these physicogeographical conditions. Analyzing the meteorological data strings one can observe that the air temperature varies in Banat, both spatially, from one meteorological station to another, and temporally from one year to another, from one semester to another, from one season to another but also from one month to the next due to the frequency and intensity of the advection of the different masses of air. The analysis of the air temperature and the thermal regime in Banat region confirms the moderate climate, with quite strong Oceanic influences from the western part of Europe and the weaker sub-Mediterranean influences, from the southwestern part of the continent. However, as a consequence of the global climate changes we are witnessing, at least in the last 50 years, there has also been a trend in Banat to increase the average annual temperature.
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