By Victor Fet, Alexi Popov
Dr. Victor Fet is a Professor of Biology at Marshall collage, West Virginia, united states. He used to be a co-editor of Biogeography and Ecology of Turkmenistan (Kluwer educational Publishers, 1994) and authored dozens of study guides on animal biogeography, systematics and evolution. he's additionally one of many world’s best specialists on scorpions and one of many authors of the Catalog of Scorpions of the area (New York, 2000).
Dr. Alexi Popov is the Director of the nationwide Museum of typical background, Sofia, Bulgaria. He authored and co-authored ninety four study courses on insect faunistics, taxonomy, ecology, and conservation. He served as a Secretary and/or the Member of the Editorial Board of Historia naturalis bulgarica, Acta entomologica bulgarica, and magazine of Neuropterology. within the undertaking "Fauna Europaea", Dr. Popov leads the workforce of 30 entomologists engaged on the bugs of Bulgaria.
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Extra resources for Biogeography and Ecology of Bulgaria
The first axis separates the LHAs from mountainous areas from these from lowlands. High mountain LHAs score on the positive half of this axis, while the LHAs from open, dry habitats occupy the opposite end of this axis. Well-pronounced positive correlations with this axis show such mesophilous species from the Nemoral and Boreal faunal complexes as TERRESTRIAL MAMMALS IN BULGARIA 21 Fig. 6 RDA ordination diagrams (Axis 1 vs. Axis 2). Scatter diagram of LHAs; each LHA is denoted by the letter of the sampling area, followed by the scores of local vegetation and local humidity (for details see text).
Aurascens, Pipistrellus pipistrellus/P. pygmaeus) are considered together. In total, this analysis includes 93 species of mammals. Assemblage data. The more detailed quantitative analysis of distributional patterns of mammals in Bulgaria was based on studies of the specific small epigean mammal assemblages. Small mammals are especially suitable for this kind of analysis since the climate-species relationship is particularly important in shaping the distribution of small endotherms. Moreover, this group of animals provides a possibility to sample quantitatively and simultaneously a large number of species.
These analyses show that the structure of local assemblages is affected primarily by environmental factors external to the assemblage, while the role of internal factors, such as competition, could be suggested only in one case. The analyses at the level of local associations reveal some details in the patterns of diversity and species richness. They show that these two aspects of the diversity of local small mammal assemblages are affected, although at a low level, by the environmental factors related to altitudinal gradient.
Biogeography and Ecology of Bulgaria by Victor Fet, Alexi Popov