On the validity of bergmann's rule
Web30 de jan. de 1995 · Jablonski D (1997) Body-size evolution in Cretaceous molluscs and the status of Cope's rule, Nature, 10.1038/385250a0, 385:6613, (250-252), Online publication date: 1-Jan-1997. Gaston K and Blackburn T (1997) The spatial distribution of threatened species: macro-scales and New World birds , Proceedings of the Royal Society of London. WebOn the validity of Bergmann's rule. On the validity of Bergmann's rule. Shai Meiri. 2003, Journal of Biogeography. Aim We reviewed the occurrence of Bergmann's rule in birds (ninety-four species) and mammals (149 species), using only studies where statistical significance of the results was tested.
On the validity of bergmann's rule
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Web5 de set. de 2013 · Whether or not climate plays a causal role in mammal body-size evolution is one of the longest-standing debates in ecology. Bergmann's Rule, the longest-standing modeladdressing this topic, posits that geographic body-mass patterns are driven by temperature, whereas subsequent research has suggested that other ecological … WebBergmann's rule is an ecogeographic principle. It states that, within a widely distributed group of animals, the larger ones are found in colder environments, and the smaller ones …
Web28 de jun. de 2008 · Aim The aim of this study is to test whether Bergmann's rule, a general intraspecific tendency towards larger body size in cooler areas and at higher latitudes, holds for birds throughout the world.. Location This study includes information on species of birds from throughout the world.. Methods I gathered data on body size … WebBergmann's rule is an ecogeographical rule that states that within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, while populations and species of smaller size are found in warmer regions.Bergmann's rule only describes the overall size of the animals, but does not include body parts like Allen's …
WebBergmann's rule states that, within species of mammals, individuals tend to be larger in cooler environments. However, the validity of the rule has been debated. We examined … Web14 de fev. de 2007 · Geographic body size variation was analysed in males and females of 19 populations of the South American grasshopper Dichroplus vittatus Bruner spanning 20 degrees of latitude and 2700 m of altitude. Using mean and maximum body length of each sex and factors obtained from principal components analyses of six morphometric linear …
Web1 de mar. de 2003 · On the validity of Bergmann's rule. Shai Meiri, T. Dayan. Published 1 March 2003. Environmental Science, Biology, Chemistry. Journal of Biogeography. Aim …
Web17 de mar. de 2014 · According to Bergmann's and Allen's rules,... The validity of ecogeographical rules is context‐dependent: testing for Bergmann's and Allen's rules by latitude and elevation in a widespread Andean duck - Gutiérrez‐Pinto - 2014 - Biological Journal of the Linnean Society - Wiley Online Library ipp shoe catalogWebAim We reviewed the occurrence of Bergmann's rule in birds (ninety-four species) and mammals (149 species), using only studies where statistical significance of the results … ipp serviceWebA famous ecogeographical rule is the Bergmann's rule, which postulates that body size increases in colder temperatures within homeothermic species and that the latitude is a … orbitz hotels dc loews madisonWeb1 de abr. de 2014 · We found a negative relationship between body size and temperature across latitude consistent with Bergmann's rule, whereas there was a positive relationship between these variables along replicate elevational gradients at different latitudes. Limb-size variation did not support Allen's rule along latitude, nor along elevation. ipp shoe truckWeb(1956, 1963) restricted Bergmann’s rule to variation within species and suggested that ecogeographic rules only have validity at the intraspecific level. The common … orbitz hawaiin vacationsWebPDF On May 1, 1998, CB Marcondes and others published The usefulness of Bergmann's rule for the distinction of members of Lutzomyia intermedia species complex ... The possible non-validity of. ipp sentence researchWebWe tested the validity of Bergmann's rule and Rosenzweig's hypothesis through an analysis of the geographical variation of the skull size of Otaria flavescens along the entire distribution range of the species (except Brazil). We quantified the sizes of 606 adult South American sea lion skulls measu … ipp serie historica