Aspects of Permian palaeobotany and palynology. VIII. On the reclassification of the West- and central European species of the form-genus Callipteris brongniart 1849

1988 ◽  
Vol 54 (1-2) ◽  
pp. 135-150 ◽  
Author(s):  
J.H.F. Kerp ◽  
H. Haubold
2021 ◽  
Vol 15 (1) ◽  
pp. 23-39
Author(s):  
Robert B. Angus

The West European species of Boreonectes Angus, 2010 are reviewed. B. multilineatus (Falkenström, 1922) is shown to be widely distributed in the Pyrenees, where it is the only species known to occur. The chromosomes of all five west European species are found to have, in addition their different numbers of chromosomes, differences in the number and locations of secondary constrictions, and in some cases, the number of chromosomes with clear centromeric C-bands. The level of differences between the chromosomes of the species is in stark contrast with the very slight genetic (DNA) differences between them and this suggests that chromosome differentiation may have been a driver of speciation. Two of the species, B. griseostriatus (De Geer, 1774) and B. multilineatus, have distributions extending northwards as far as Arctic Scandinavia. It is pointed out that, while these northern areas now constitute the major portions of their ranges, they must be of fairly recent origins as most of the area would have been covered by ice sheets and therefore not habitable during the glacial maximum of the Last Glaciation. This contrasts with the situation in the area of the Central European mountains where fossil faunas, including Boreonectes, are known. B. griseostriatus, identifiable to species by its parameres, was present in the Woolly Rhinoceros site at Starunia in the Western Ukraine, and this fauna is discussed as well as an English fauna of similar age.


Hydrobiologia ◽  
2021 ◽  
Author(s):  
Márk Ficsór ◽  
Zoltán Csabai

AbstractThe aim of this review is to summarize the literature knowledge about how abiotic environmental factors and biotic interactions affect the sequentially overlapping longitudinal distribution of Central European species of the net-spinning freshwater caddisfly larvae of the genus Hydropsyche (Trichoptera: Hydropsychidae). In this relation, several physical and chemical parameters of water are discussed, as well as different species-specific traits, behavioural aspects and the interaction of coexisting species. Longitudinal gradients of river networks, especially annual temperature range, flow velocity and the particle size of suspended food material play a crucial role in forming the downstream succession of characteristic species, while increased levels of organic pollution, nutrients, salinity and heavy metals facilitates the presence of more tolerant ones. Several species-specific traits, such as respiration range, net-building frequency, head capsule size or optimal net-building velocity correlate with the position of a given species in the sequence. Coexistence of species with similar ecological demands in the overlapping zones of distribution is facilitated by differences in feeding and net-building habits, microhabitat preferences and staggering life cycles, but complicated at the same time by means of inter- and intraspecific territorial behaviour, such as fighting for the ownership of larval retreats or the practice of stridulation.


2020 ◽  
pp. 405-422
Author(s):  
David G. Tompkins

In the aftermath of World War II, the Red Army as a symbol of power was supported in many other arenas so as to counteract the rival influence of the United States on Central Europe. The Soviet Union brought new urgency to these efforts from 1948, with music—and culture more broadly—providing a case for Russia’s attractiveness and superiority with respect to the West. This chapter discusses the nature and scope of Soviet influence in the Central European music world through the examples of East Germany and Poland, and through the prism of the music and persona of Sergei Prokofiev. After his return to the USSR in 1936, Prokofiev, along with Shostakovich, became associated with the very definition of what made music Soviet and thus worthy of emulation. And even more than Shostakovich, Prokofiev and his music functioned as powerful but malleable symbols that could be appropriated by all Soviet actors for their own ends.


Zootaxa ◽  
2008 ◽  
Vol 1845 (1) ◽  
pp. 33 ◽  
Author(s):  
ANTE VUJIĆ ◽  
SNEŠANA RADENKOVIĆ ◽  
DUBRAVKA POLIĆ

The luteitarsis species group of the aphidophagous genus Pipiza Fallén is defined as a monophyletic unit and the European species of this group are revised. Based on material from Serbia found at two lowland localities, P. luteibarba n. sp. is described. This species is closely related to P. luteitarsis Zetterstedt and P. accola Violovitsh. A key for the West Palaearctic species of the Pipiza luteitarsis species group is provided and records of all species from the Balkan Peninsula are presented. The distribution of the new species is discussed and conservation implications considered.


2018 ◽  
Vol 18 (1-2) ◽  
pp. 247-294 ◽  
Author(s):  
Ditte Bandini ◽  
Bernd Oertel ◽  
Sebastian Ploch ◽  
Tahir Ali ◽  
Jukka Vauras ◽  
...  

1940 ◽  
Vol 72 (10) ◽  
pp. 189-190 ◽  
Author(s):  
WM. G. Mathers

The shot hole borer, Anisandrus pyri (Peck), which has been referred to as the American representative of the European species A. dispar (Fab.) and from which according to Swame (1918) it is doubtfully distinct, has long been known in the eastern parts of Canada and the United States. This species has also been present for a number of years in the West where its distribution is apparently confined to the coast districts. As it has become particularly troublesome during recent years in British Columbia, and as published accounts of its occurrence in this province are very meagre, the following notes may be considered timely.


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