What is the Bioclimatology?


Go to: The Phytosociological Research Center

Bioclimatology: Ecological science dealing with the relations between the climate and the distribution of the living species on the Earth. (...) For several years, we have been trying to achieve a relevant worldwide bioclimatic classification. Our purpose is to accomplish a bioclimatic typology, always quantifiable, which should show a close relation between the plant formations, vegetation series and climatic numerical values, expressed by parameters and easily calculated bioclimatic indexes. (...) Once the limits or boundaries of the vegetation series and macroseries have been determined and charted, the threshold of the climate values, which discriminate them, can be statistically calculated. Thus, the areas of the bioclimatic units (bioclimates, thermotypes and ombrotypes) have been progressively delimited and adjusted. (...)

 In the new "Worldwide Bioclimatic Classification System" proposed, five macrobioclimates, twenty-seven bioclimates and five bioclimatic variants are recognized. (...) The five macrobioclimates are: Tropical, Mediterranean, Temperate, Boreal and Polar. Each of them, and every one of their subordinate units or bioclimates, is represented by a characteristic group of plant formations, biocenosis and plant communities. Within almost every bioclimate, a number of variations in the seasonal rainfall patterns of rain allows us to recognize the bioclimatic variants. Additionally, within every bioclimate, variations in the thermic and ombrothermic values make it possible to distinguish the bioclimatic belts: thermotypes and ombrotypes. If macrobioclimates, bioclimates, bioclimatic variants as well as bioclimatic belts (thermo- and ombrotypes) are taken into account, about three hundred isobioclimates find territorial representation on the Earth.