Latitudinal gradient hypothesis
WebThis supports our alternative pattern hypothesis that sexually dimorphic traits are exaggerated at lower latitudes relative to higher latitudes. Female P. latipinna prefer … WebFinally, the finding that the steepest latitudinal gradients occur in the geologically youngest clades of bivalves (50, 53) is also consistent with a dynamic involving preferential …
Latitudinal gradient hypothesis
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http://www.evolutionary-ecology.com/issues/v03n04/eear1242.pdf WebBackground. Stevens (1989) named the rule after Eduardo H. Rapoport, who had earlier provided evidence for the phenomenon for subspecies of mammals (Rapoport 1975, 1982).Stevens used the rule to "explain" greater species diversity in the tropics in the sense that latitudinal gradients in species diversity and the rule have identical exceptional …
Web6 jan. 2011 · become a major research focus, and the latitudinal gradient hypothesis a point of contention.1e 6 While gradients have been demonstrated in Australasia,78Japan,9 Europe10 and North America,11 other studies12 13 have found no associ-ation between prevalence and latitude. Also, studies in Mediterranean Europe have found higher-than- Web31 dec. 2013 · Many ecological and evolutionary mechanisms have been hypothesized to cause the gradient, but it is unlikely that a single mechanism dominates. Recent …
WebAbstract The latitudinal gradient of decreasing richness from tropical to extratropical areas is ecology's longest recognized pattern. Nonetheless, notable exceptions to the … WebThe latitudinal diversity gradient (LDG) is one of the most striking ecological patterns on our planet. Determining the evolutionary causes of this pattern remains a challenging …
The latitudinal diversity gradient is a noticeable pattern among modern organisms that has been described qualitatively and quantitatively. It has been studied at various taxonomic levels, through different time periods and across many geographic regions (Crame 2001). The latitudinal diversity gradient has … Meer weergeven Species richness, or biodiversity, increases from the poles to the tropics for a wide variety of terrestrial and marine organisms, often referred to as the latitudinal diversity gradient. The latitudinal diversity gradient is one of the … Meer weergeven Although many of the hypotheses exploring the latitudinal diversity gradient are closely related and interdependent, most of the … Meer weergeven • Asynchrony of Seasons Hypothesis • Biodiversity • Biomass (ecology) • Biomes • Effective evolutionary time Meer weergeven There are many other hypotheses related to the latitudinal diversity gradient, but the above hypotheses are a good overview of the major … Meer weergeven
WebA latitudinal gradient in biodiversity has existed since before the time of the dinosaurs, yet how and why this gradient arose remains unresolved. Here we review two major … magic man companies houseWebOur examination of MacArthur’s (1972) hypothesis of a latitudinal gradient in niche breadth suggests that it rests on a series of assumptions for which support is at best equivocal. magic man games rhinelanderWeb5 feb. 2008 · hypothesis is some biogeographers suggest that the terrestrial tropics are not, in fact, the largest biome, and thus this hypothesis is not a valid explanation for the … nyship retiree healthWebThis paper tests whether tropical species’ ranges do extend into extra-tropical areas, and expands the definition of a tropical species to include species from genera with tropical … magic man green bay packersWeb3 mrt. 1998 · These data on the spatial distribution of species on the two shelves allow us to test proposed explanations for the latitudinal species diversity gradient. One … magic man by robert winters and fallWebOur examination of MacArthur’s (1972) hypothesis of a latitudinal gradient in niche breadth suggests that it rests on a series of assumptions for which support is at best … nyship retiree benefitsWebIntroducing the LDG - Understanding Evolution. The pattern of having lots of species at the equator with diversity dwindling off towards the poles is known as the Latitudinal … magic man guitar cover with tabs