Quaternary Refugia and Persistence of Biodiversity | Science news careers commentary
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Global climate has fluctuated greatly during the past three million years, leading to the
recent major ice ages. An inescapable consequence for most living organisms is great …

It is commonly believed that trees were absent in Scandinavia during the last glaciation and
first recolonized the Scandinavian Peninsula with the retreat of its ice sheet some 9000 …

Although the tropics harbor greater numbers of species than do temperate zones, it is not
known whether the rates of speciation and extinction also follow a latitudinal gradient. By …

A compilation of paleoclimate records from lake sediments, trees, glaciers, and marine
sediments provides a view of circum-Arctic environmental variability over the last 400 years …

Analyses of fossil mammal faunas from 2945 localities in the United States demonstrate that
the geographic ranges of individual species shifted at different times, in different directions …

Although an African origin of the modern human species is generally accepted, the
evolutionary processes involved in the speciation, geographical spread, and eventual …

About 100 km east of Rome, in the central Apennine Mountains, a critically endangered
population of∼ 50 brown bears live in complete isolation. Mating outside this population is …

Polar bears (PBs) are superbly adapted to the extreme Arctic environment and have become
emblematic of the threat to biodiversity from global climate change. Their divergence from …

Abstract Models for the development of species distribution in Europe typically invoke
restriction in three temperate Mediterranean refugia during glaciations, from where …