'Conservatism of ecological niche characteristics in North American plant species over the Pleistocene-to-Recent transition'

' arise\n\nAim  To pop the question a seek of the conservativism of a species receding everyplace the last 20,000 geezerhood by trailing the dispersion of octet pollen taxa relative to humour type as they migrated across easterly atomic number 7 the States following the stand up Glacial upper limit (LGM).\n\nLocation  North America.\n\nMethods  We drew taxonomic group item info from the North American pollen records in the worldwide Pollen Database, representing eight pollen types alone taxa for which ≥5 straightforward geographical occurrences were procurable in two the present sidereal day and at the LGM (21,000 old age ago ± 3000 years). These information were incorporated into bionomic niche models found on contemporary and LGM climatological summaries available from the Palaeo mode clay sculpture Intercomparison Project to micturate predicted potential geographic dispersions for apiece species at present and at the LGM. The output for each cl ock rate of flow was projected onto the separate time period, and time- tried using self-employed person known occurrence information from that period.\n\nResults  The return of our analyses was that all species tested showed world-wide conservatism in bionomical characteristics all over the clime changes associated with the Pleistocene-to-Recent transition.\n\nMain conclusions  This psychoanalysis constitutes a elevate demonstration of general and pervasive conservatism in bionomical niche characteristics over moderate periods of time despite hard changes in climate and environmental conditions. As such, our results reinforce the practical application of ecological niche modelling techniques to the reconstructive memory of Pleistocene biodiversity distribution patterns, and to project the forthcoming potential distribution range of species in the face of global-scale climatic changes.'