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Spatiotemporal patterns are patterns that occur in a wide range of natural phenoma and are characterized by a spatial and temporal patterning. The general rules of pattern formation hold. In contrast to "static", pure spatial patterns, the full complexity of spatiotemporal patterns can only be recognized over time.
One example of developmental plasticity that is reversible is the shift in mouth form of roundworm, Pristionchus pacificus, when exposed to a changes in food type and availability. [12] A second example of reversible developmental plasticity is the length of Galapagos marine iguanas, Amblyrhynchus cristatus, in response to El Niño weather ...
Allochronic speciation (also known as allochronic isolation, or temporal isolation) is a form of speciation (specifically ecological speciation) arising from reproductive isolation that occurs due to a change in breeding time that reduces or eliminates gene flow between two populations of a species.
The calibration was initially done on the basis of spatial variations in temperature and it was assumed that this corresponded to temporal variations. [29] More recently, borehole thermometry has shown that for glacial-interglacial variations, a = 0.33 ‰/°C, [ 30 ] implying that glacial-interglacial temperature changes were twice as large as ...
Climate variability is the term to describe variations in the mean state and other characteristics of climate (such as chances or possibility of extreme weather, etc.) "on all spatial and temporal scales beyond that of individual weather events." Some of the variability does not appear to be caused by known systems and occurs at seemingly ...
Time geography or time-space geography is an evolving transdisciplinary perspective on spatial and temporal processes and events such as social interaction, ecological interaction, social and environmental change, and biographies of individuals. [1]
Temporal variation may originate from movement of the source, or changes in the object itself. Common targets include novae , supernovae , pulsating stars , flare stars , blazars and active galactic nuclei .
In 1999, evidence for time variability of the fine-structure constant based on observation of quasars was announced [9] but a much more precise study based on CH molecules did not find any variation. [10] [11] An upper bound of 10 −17 per year for the time variation, based on laboratory measurements, was published in 2008. [12]