scholarly journals Shared species of the spontaneous flora of a West African (Burkina Faso) and a Central European country (Germany)

2015 ◽  
Vol 18 ◽  
pp. 21-27
Author(s):  
Rüdiger Wittig

In spite of enormous climatic differences between Burkina Faso and Germany, 20 species belong to the spontaneous flora of both countries, i.e. 1% of the flora of Burkina Faso and 0.15 % of the German flora. All of them are either ruderal and segetal species (16) or water and reed plants (4). All of the 16 ruderals/segetals are therophytes. From a recent point of view, most of the 20 species can be classified as cosmopolitan, because they cover three and more floristic zones, and/or at least three climatic zones, and/or are represented in at least three continents. Although Burkina Faso has a semi-arid climate, none of the species can be called a sclero- or xerophyte. Therefore, in Burkina Faso, all are more or less bound to habitats at least temporarily flooded or to humid soils. In Germany, however, the concerned ruderals, with one exception, are indicators of medium dry or dry habitats.

2013 ◽  
Vol 112 (12) ◽  
pp. 4231-4237 ◽  
Author(s):  
Wolfgang Poeppl ◽  
Adelheid G. Obwaller ◽  
Martin Weiler ◽  
Heinz Burgmann ◽  
Gerhard Mooseder ◽  
...  

2014 ◽  
Vol 173 (2) ◽  
pp. 204-208 ◽  
Author(s):  
Petr Tousek ◽  
Frantisek Tousek ◽  
David Horak ◽  
Pavel Cervinka ◽  
Richard Rokyta ◽  
...  

2010 ◽  
Vol 151 (4) ◽  
pp. 923-932 ◽  
Author(s):  
Jaroslav Koleček ◽  
Jiří Reif ◽  
Karel Šťastný ◽  
Vladimír Bejček

2019 ◽  
Author(s):  
Indrė Žliobaitė

AbstractHuman society relies on four main livestock animals – sheep, goat, pig and cattle, which all were domesticated at nearly the same time and place. Many arguments have been put forward to explain why these animals, place and time were suitable for domestication, but the question – why only these, but not other animals, still does not have a clear answer. Here we offer a biogeographical perspective: we survey global occurrence of large mammalian herbivore genera around 15 000 – 5 000 years before present and compile a dataset characterising their ecology, habitats and dental traits. Using predictive modelling we extract patterns from this data to highlight ecological differences between domesticated and nondomesticated genera. The most suitable for domestication appear to be generalists adapted to persistence in marginal environments of low productivity, largely corresponding to cold semi-arid climate zones. Our biogeographic analysis shows that even though domestication rates varied across continents, potentially suitable candidate animals were rather uniformly distributed across continents. We interpret this pattern as a result of an interface between cold semi-arid and hot semi-arid climatic zones. We argue that hot Semi-arid climate was most suitable for plant domestication, cold Semi-arid climate selected for animals most suitable for domestication as livestock. We propose that the rates of domestication across biogeographic realms largely reflect how much intersection between hot and cold Semi-arid climatic zones was available at each continent.


2020 ◽  
Vol 11 (2) ◽  
pp. 97-107
Author(s):  
Paulina Polko

Poland is regarded as a country relatively free from Islamic terrorist threat. According to official statements, the four-level terrorism threat scale assessed the terrorism threat in Poland as low (‘zero’). The Islamic minority living in Poland is small and very specific, connected with the historical background of the country and well integrated. For years, relations with most of the Islamic countries were good, or even very good, until the beginning of the XX century when Poland got involved in operations in Iraq and Afghanistan and became a member of the anti-ISIS coalition. That might have attracted the attention of Al-Qaeda and ISIS to the country and its citizens as possible targets of attacks. Surprisingly, 20 to 40 Polish citizens went to Iraq or Syria to fight as foreign fighters (FTFs). More than 10 per cent of Polish criminals wanted by the Interpol is charged with participation in the terrorist organization (ISIS). The article aims to present the relations between this Central European country and the jihadist terrorist organization and to reverse the common belief that Poland has no links to ISIS and no reasons to regard the organization as its serious problem.


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