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Experimental economics researchers have demonstrated how sunspots could affect economic activity. [ 7 ] The name is a whimsical reference to 19th-century economist William Stanley Jevons , who attempted to correlate business cycle patterns with sunspot counts (on the actual sun ) on the grounds that they might cause variations in weather and ...
The American naturalist J. T. Gulick (1832–1923) was the first to use the term "divergent evolution", with its use becoming widespread in modern evolutionary literature. [2] Examples of divergence in nature are the adaptive radiation of the finches of the Galápagos, changes in mobbing behavior of the kittiwake, and the evolution of the ...
Macroevolution is often thought of as the compounded effects of microevolution. map unit (m.u.) See centimorgan. maternal effect Any nongenetic effect of the mother on the phenotype of her offspring, owing to factors such as cytoplasmic inheritance, transmission of congenital disease, and the sharing of nutritional conditions. [1] mating system
Climate change and the associated changing weather patterns occurring worldwide have a direct effect on biology, population ecology, and the population of eruptive insects, such as the mountain pine beetle. This is because temperature is a factor which determines insect development and population success. [87]
Conceptually, the Eltonian niche introduces the idea of a species' response to and effect on the environment. Unlike other niche concepts, it emphasizes that a species not only grows in and responds to an environment based on available resources, predators, and climatic conditions, but also changes the availability and behavior of those factors ...
The storm that pummeled California this week was fueled by an atmospheric river, a plume of moisture that extended across the Pacific to near Hawaii. WHAT IS AN ATMOSPHERIC RIVER? Atmospheric ...
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 ...
In evolutionary biology, punctuated equilibrium (also called punctuated equilibria) is a theory that proposes that once a species appears in the fossil record, the population will become stable, showing little evolutionary change for most of its geological history. [1] This state of little or no morphological change is called stasis.