. Ecological animal geography; an authorized, rewritten edition based on Tiergeographie auf ockologischer grundlage . 0 70000 60000 50000 40000 30000 20000 10000 0 Fig. 11.—Receipts of skins of Lepus americanus (above) and Lynx canadensis (below) by the Hudson Bay Company from 1845 to 1905. After Seton. thrive better, still others will be enabled to enter. The lakes of Finland and south Sweden were once part of the Littorian Sea; their separation was followed by freshening, and the entire marine fauna was reduced to a single fish (Cottus quadricornis) and a number of crustaceans (Mysis relicta
. Ecological animal geography; an authorized, rewritten edition based on Tiergeographie auf ockologischer grundlage . 0 70000 60000 50000 40000 30000 20000 10000 0 Fig. 11.—Receipts of skins of Lepus americanus (above) and Lynx canadensis (below) by the Hudson Bay Company from 1845 to 1905. After Seton. thrive better, still others will be enabled to enter. The lakes of Finland and south Sweden were once part of the Littorian Sea; their separation was followed by freshening, and the entire marine fauna was reduced to a single fish (Cottus quadricornis) and a number of crustaceans (Mysis relicta, Idothea entomon, Pontoporeia affinis, and Limnocalanus macrurus). Similarly, climatic changes at the close of the glacial period have completely changed the mid-European biocoenoses. On account of this selective influence of the environment upon animal life, the ecologic communities in widely separated parts of the world may be similar, if similar processes and conditions are con- cerned. Thus corresponding biotopes with similar biocoenoses arise in different parts of the biosphere, quite independent of each other. They are, however, analogous formations. The members of the biocoenoses, the families, genera, and species, are often entirely different. The most
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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectanimalecology
