Petar Beron

Petar Beron
National Museum of Natural History - Bulgarian Academy of Sciences · National Museum of Natural History

Dr

About

43
Publications
18,433
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1,017
Citations
Citations since 2016
23 Research Items
520 Citations
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
2016201720182019202020212022020406080100
Introduction
Skills and Expertise
Additional affiliations
July 1963 - present
July 1963 - March 2010
National Museum of Natural History - Bulgarian Academy of Sciences
Position
  • Managing Director

Publications

Publications (43)
Book
Full-text available
The present book contains generalization of the series of Catalogues of the cave fauna of Bulgaria, published by V. Guéorguiev and P. Beron since 1962, and new data and corrections, obtained after my summarizing book (Beron, 1994). It contains data about 864 animal species, including 153 species not recorded in the previous “Essais”. Data concernin...
Book
Full-text available
Situated in the Mediterranean and rich in limestone (karstified rocks account for 33 % of it’s surface), Greece is home of rich and varied cave fauna. It has been studied since the middle of 19th Century, but most actively after WW 2. The list of Kanellis (1946) of Greek cave fauna contains 65 species. In the present monograph they are already 632,...
Book
Full-text available
Book
Full-text available
The Isopoda, Myriapoda and Arachnida of the High Altitude in the Old World.
Article
Full-text available
A checklist of Isopoda Oniscidea (Crustacea) from Bulgaria (16 families, 33 genera, 81 sp.) is provided, together with an analysis of the cave species and of the inhabitants in the neighbouring territories.
Article
Full-text available
The present list contains data on type material of 109 mite species (Acaridida and Prostigmata) from Bulgaria (species, described by I. Vassilev, M. Kolebinova, P. Beron) and many foreign countries: Greece, Suriname, the Netherlands, New Guinea, Cuba, Mexico, Chile, USA, Canada, Madagascar, Gaboon, Liberia, Nigeria, Uganda, Mozambique, Tanzania, Za...
Chapter
The distribution of some orders of Arachnida is determined by the preferred temperature of their environment (i.e., thermopreferendum). Thermophilic orders (i.e., those that live at high temperatures) include: Schizomida, Amblypygi, Thelyphonida (Uropygi), Opilioacarida, most of the scorpions, Solifugae, Opilions Laniatores, and Cyphophthalmi. Ther...
Chapter
Special attention is payed to the comparison between the arachnofaunas of close areas: Mediterranean and Central European; Mexico and the USA; Central America and the Caribbean Islands; South Africa, Madagascar, Seychelles, and Mascarene; and special areas like Patagonia and New Guinea, Australia, New Zealand, New Caledonia, and Lord Howe Island.
Chapter
Full-text available
But what is biogeographical region? There are different definitions, one of which is written by Wallace (1894): “…those primary divisions of the earth’s surface of approximately continental extent, which are characterized by distinct assemblages of animal types.” Review and analysis of many zoogeographical schemes for easier checking how the orders...
Chapter
Full-text available
Most of the “classic” zoogeographical regions are with very low-level endemicity that concerns the Arachnida. Even in Kingdom Notogea, there are no endemic orders or suborders. The distribution of several orders (Ricinulei, Amblypygi, Thelyphonida (Uropygi), Schizomida, Solifugae, Scorpiones, Opiliones of the suborders Cyphophthalmi and Laniatores)...
Chapter
Full-text available
Almost all orders of Arachnida are represented in caves, except for Solifugae. In some orders (Pseudoscorpiones) there are many troglobitic blind species. Such species are found also among spiders, scorpions, opilions, and others. Further species are prospected in different groups and regions of the World, and the ways in which Arachnida have invad...
Chapter
Full-text available
In many older authors (Aristotle and others), we can find information about spiders, scorpions, and other Arachnida. The scientific studies however started with the paper of Clerck (1757), the only one recognized as valid before the system of Linnaeus (1758).
Chapter
Full-text available
Concerning the fossil orders, Dunlop (1996a, b) presents a revised concept of the formerly accepted (Weygoldt and Paulus 1979; Shultz 1990) five fossil orders of Arachnida. The subclasses of Petrunkevitch (1949) have been rejected, Anthracomartida – synonymized with Trigonotarbida. It was concluded that the position of Phalangiotarbida and Haptopod...
Chapter
The study of extreme habitats and the animals adapted to them (e.g., high mountain fauna) is interesting in many ways. It gives us the opportunity to reveal many ecophysiological mechanisms for adaptation to extreme environments. The recent detailed studies from large and difficult to explore mountains have provided specialists with the opportunity...
Chapter
As factors of distribution of Arachnida are outlined paleogeography and paleodistribution, age of groups, barriers, bridges, ability to overcome them, phoresy, dispersal, climate, orography and many other fundamental concepts.
Chapter
The arachnofauna of various parts of the Earth is analyzed and the particularities, endemics, relicts, and the presumed ways of formation of the fauna are outlined. Also the northern limits of the groups in the Holarctic are indicated, and the connections in the geological time are analyzed.
Chapter
Full-text available
Heymons (1901), the author of the term Chelicerata, united Merostomata (Eurypterids and Xiphosurans) with Arachnida in one monophyletic group. Dunlop and Selden (1997) restricted this term to Lemoneites, Xiphosura, Chasmataspida, Eurypterida, and Arachnida. There were many attempts to create a “natural” system of the monophyletic (Wheeler et al. 19...
Chapter
Review of all orders with maps of their geographical distribution.
Article
Comparison is made between the Arachnofaunas of Western Palearctic (Europe, SW Asia and North Africa to 20oN) and Afrotropical (from 20oN to the line Zambezi – Kunene) areas.This border (actually transition zone) divides two Kingdoms – Holarctic and Paleotropic. What concerns Arachnida so far such comparison has never been made (for all the orders)...
Article
Full-text available
For the kingdom Animalia, 1,552,319 species have been described in 40 phyla in a new evolutionary classification. Among these, the phylum Arthropoda alone represents 1,242,040 species, or about 80% of the total. The most successful group, the Insecta (1,020,007 species), accounts for about 66% of all animals. The most successful insect order, Coleo...
Article
Full-text available
The biospeleological studies in the Rhodopes started in 1924 and until 1959 concerned only the western part of the mountain. Altogether over 600 caves and potholes are hitherto known from the Bulgarian part of the Western Rhodopes. We report 276 species of invertebrates collected from 120 caves (Bulgaria – 109, Greece – 5, unknown location – 6). In...
Chapter
Full-text available
Karstic landscape cover about 22.7% of the Bulgarian territory, with more than 5000 caves and potholes. Regular exploration of the cave fauna of Bulgaria started in 1922, and by the end of 2005 more than 800 animal species have been reported from 780 caves. Troglobite and stygobite species are 167, most of them Bulgarian endemics. The most importan...
Article
Full-text available
The karstic area between the rivers Timok and Vit has about 500 caves and pot-holes, more than 300 of them being the subject of the present study. In this area (called here Western Stara Planina) we have noted 63 species and subspecies of terrestrial troglobites and 17 species and subspecies of aquatic troglobites. The two Regions into which we spl...
Article
Full-text available
W Bulgarii, obrączkowanie nietoperzy rozpocząl 5.X.1940 Dr Buresch, ktory w okresie 1940-1943 zaobrączkowal 147 okazow, nalezących do 5 gatunkow. II okres obrączkowania przypadal na lata 1948-1949 (158 okazow z 4 gatunkow). Systematyczne prace w tym kierunku rozpoczeto od roku 1955. Do 31.XII.1961 zaobrączkowano 2991 osobnikow nalezących do 13 gatu...
Article
Full-text available
The author considers the elements of terrestrial magnetism to be, that the force with which the magnetic needle maintains its position is not everywhere the same, and that its declination and inclination vary from one region to another. These elements, he states, undergo very different modifications, which may be reduced to the following:― 1. Varia...

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Project (1)
Archived project
Project is finished because the book has been published by Spinger in 2018. P. Beron Monograph on the distribution of all orders of Arachnida in the World