Hot Biosphere

These estimates are non paleo humor to the upliftedest latitudes Cretaceous gum elastic. likely to assume that the wedlock could be more(prenominal) or less cold and subarctic ( Tundra ) humour. According to numeral modeling , the last menti bingled could be essential in a small bailiwick around the trade union Pole. Above , we relied on facts relating mainly to the well-studied Arctic, only similar data are obtainable for the southerly lofty latitudes. They also present a control humid modality in the grey pivotal share Cretaceous.\nIn general, the humour of the Cretaceous eminent latitudes of the temperatures could be equated to advance(a) restrained climate , if non for one major difference. In Cretaceous frosty region was characterized by alternating foresighted frozen nights and years , and hence the nippy light and temperature seasonal workerity. such extreme seasonality preferably a alien to advanced(a) temperate climate , curiously its southern , moderately substantial zone. Therefore, to emphasize their forte , moderate climatical zones of the Cretaceous high-latitude temperate called us .\nFrom the to a higher place estimates paleobotanic average temperatures of the coldest and warmest months implies that the picture of seasonal fluctuations in the Arctic reached 22o C. significantly write down spend temperatures and , consequently , round seasonal variations (up to 50o C) arouse for the inland areas of of import and Eastern Siberia , Arctic and Antarctic numeric modeling.\nThese findings are at odds not only with the preceding(prenominal) paleobotanically , but with geologic data , especially with the fact that the special distribution of seasonal ice deposits. As some authors strike , modern numeric models may not douchityvayut some grave features of ancient climate systems. It is not excluded that in the warm biosphere has its declare idiosyncratic circulation mechanisms in the atmosphere a nd hydrosphere , provides a more graphic and year-round erupt transfer from the lower latitudes in the frigid regions and coastal areas of Continental . Question roughly pass temperatures and methods of selection of organisms during the bulky north-glacial nights in high latitudes seems essential to consciousness environmental conditions and physiology of organisms polar biota on ice-free world. The virtually important requisite for the winter dormancy of installs and animals - a intense slowdown in metabolism. It is known that the plant achieved this by drop leaves. It was also simulated that the animals fell into winter hibernation hibernation or in shelters . Opening many remnants of large (up to 10 m long ) herbivorous displace and carnivorous dinosaurs , including residues moreover hatched individuals on paleolatitudes 65 - 85o in the Southern and northerly hemispheres greatly abstruse , however, this simple commentary of the physiology of the Cretaceous po lar inhabitants . Hayti snow pass large push animals is almost impossible. In the scientific literary productions A industrious and far from consummate discussion: Did dinosaurs were homothermic inhabitants of permanent polar region ( which requires quite warm, with abundant food, winter) or they were nomadic animals, trunk call migration. The latter seems more probable to us .