Cryptic refugia
WebFeb 7, 2003 · In fact, several reports have suggested the existence of cryptic refugia in northern Europe, citing fossil evidence from macroscopic plants and vertebrates, as well as phylogeographic studies of land snails, sedges and ferns, and freshwater fish (4–11). Although these data contradict the dominant paradigm of both palynology and … WebAbstract Viewed from a geological perspective, present-day animal and plant communities in many parts of the world have a remarkably short history. The environmental revolution at the end of the Pleistocene, a mere 10 000 years ago, triggered major shifts in the ranges of species and hence composition of communities. Present-day communities in the boreal …
Cryptic refugia
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WebNov 1, 2001 · Just as a long-standing belief in the importance of southern refugia has been substantiated in recent years by direct evidence from modern and fossil populations, so it is timely to now explore the nature and distribution of cryptic northern refugia, and their role in shaping today's biota. The study of modern populations. Acknowledgements WebDec 1, 2014 · Recent studies however have revealed the existence of extra-Mediterranean refugia, including the existence of cryptic north-west European refugia during the Last Glacial Maxima (24–14.6 kyr BP).
WebDec 1, 2013 · According to the classic southern refugia (Box 1) paradigm, during glacial extremes, small temperate and boreal tree populations persisted in southern Europe (south of the Alps), while restricted boreal populations might have also survived farther north 1, 2, 3.This has been challenged by the notion of northern cryptic glacial refugia of boreal … Webunknown cryptic refugia. Paleo-records for trees, pollen, and mammals supported the notion of cryptic refugia (1, 8), and more recently, phylogeographic studies of terres-trial plants and vertebrates, plus marine mac-roalgae, have provided strong support for their role in shaping the observed distribu-tions (3). The idea that geothermal regions ...
WebThe theory of classical and cryptic Pleistocene refugia is based mainly on historical changes in temperature, and the refugia are usually defined within a latitudinal gradient. However, the gradient of oceanic-continental climate (i.e. longitudinal) was also significantly variable during glacial cycles with important biotic consequences. WebThey also suggest that some species at risk from climate change might persist, even with 4°C of macroclimate warming, in cryptic refugia buffered by microclimate, pointing to …
WebNov 1, 2001 · hypothesized cryptic refugia. T able 1. Evidence for norther n refugia a. Refugium Sites T axa Age Refs. Norwegian coast Skjonghelleren Cave Red squirrel . Sciurus vulgaris. 10 360 ± 170 yr BP 28.
Web2000), have postulated that one or two previously unknown refugia were present in the Bering Sea region, likely in the Aleutian Islands. However, there is presently no geological or fossil evidence to corroborate these cryptic Bering Sea refugia. Species that have all or most of their breeding distributions in Beringia would income generation for charitiesWebNov 1, 2003 · cryptic refugia in the future may come from macrofossils, which unlike m olecular techniques, are able to indicate the existe nce, location and durat ion of refugia … income generating theoryWebThe locations of glacial refugia were assessed using STRUCTURE analysis, and potential habitats under current and past climate conditions were predicted using SDM. The … incentive\u0027s t8WebNov 11, 2024 · Coastal upwelling generates cryptic temperature refugia Scientific Reports article Article Open Access Published: 11 November 2024 Coastal upwelling generates cryptic temperature refugia... income generating scheme meaningWebApr 15, 2024 · I arrived in Tbilisi, Georgia, near Russias southern border, in late February just a few days after Russian forces invaded Ukraine. I had been reporting on crypto … incentive\u0027s t7WebApr 11, 2024 · However, cryptic refugia probably persisted throughout the LGM and earlier within Eastern Beringia , and the diversity at the investigated site is evidence for a refugium. Despite all trees being naturally established, widely spaced with crowns extending from ground level to treetop, a variety of heights, branch-angle and branch-length ... income generating projects for universitiesWebMar 7, 2010 · Equivalent cryptic southern refugia, to the south of the more conventional high-latitude polar refugia, exist in montane areas during periods of warm climate, such as the current interglacial. There is also a continental/oceanic longitudinal gradient, which should be included in a more complete consideration of the interaction between species ... income generating project ideas in school