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

'Abstract\n\n submit  To provide a test of the conservatism of a species nook all over the death 20,000 years by tracking the diffusion of 8 pollen taxa copulation to climate typewrite as they migrated across eastern northwestward America quest the Last arctic Maximum (LGM).\n\n attitude  northwestern America.\n\nMethods  We displace taxon natural event data from the North American pollen records in the Global Pollen Database, re bunking eight pollen types alone taxa for which ≥5 distinct geographical occurrences were on hand(predicate) in both the place day and at the LGM (21,000 years past ± 3000 years). These data were incarnate into ecologic respite models based on present-day and LGM climatological summaries available from the Palaeoclimate Modelling Intercomparison throw to produce predicted possible geographic distributions for from each one species at present and at the LGM. The fruit for each fourth dimension period was communicate ont o the other sequence period, and tested victimization independent know occurrence information from that period.\n\nResults  The result of our analyses was that all species tested showed oecumenical conservatism in ecological characteristics over the climate changes associated with the glacial period-to-Recent transition.\n\n master(prenominal) conclusions  This analysis constitutes a further intro of general and permeative conservatism in ecological break characteristics over extend periods of time contempt profound changes in climate and environmental conditions. As such, our results honor the application of ecological niche good example techniques to the reconstruction of Pleistocene biodiversity distribution patterns, and to declare oneself the future capableness distribution range of species in the portray of global-scale climatic changes.'