Latitudinal gradients in intraspecific ecological diversity
نویسندگان
چکیده
منابع مشابه
Latitudinal gradients in intraspecific ecological diversity.
The increase in the number of species with decreasing latitude is a striking pattern of global biodiversity. An important feature of studies of this pattern up to now has been the focus on species as the fundamental unit of interest, neglecting potential within-species ecological diversity. Here, we took a new perspective on this topic by measuring the degree to which individuals within populat...
متن کاملExplaining latitudinal diversity gradients.
DIFFERENCES IN MEASURED RATES OF SPECIation and extinction among living species are commonly used to explain latitudinal diversity gradients. The logic is straightforward: the higher the net diversification rate (the difference between the speciation and extinction rate), the greater the number of species. In this vein, J. T. Weir and D. Schluter conclude from their recent study of birds and ma...
متن کاملLatitudinal gradients in species diversity
The increase in species richness or biodiversity that occurs from the poles to the tropics, often referred to as the latitudinal gradient in species diversity, is one of the most widely recognized patterns in ecology. Put another way, localities at lower latitudes generally have more species than localities at higher latitudes. Explaining the latitudinal diversity gradient is one of the great c...
متن کاملIncumbency, diversity, and latitudinal gradients
s with Programs 38(7):169. Krug, A. Z., D. Jablonski, and J. W. Valentine. 2008. Species-genus ratios reflect a global history of diversification and range expansion in marine bivalves. Proceedings of the Royal Society of London B (published online 13 February 2008). Laptikhovsky, V. 2006. Latitudinal and bathymetric trends in egg size variation: a new look at Thorson’s and Rass’s rules. Marine...
متن کاملInverse latitudinal gradients in species diversity
Introduction No single pattern of biodiversity has attracted ecologists more than the observed increase in species richness from the poles to the tropics (Pianka, 1966; Rohde, 1992; Rosenzweig & Sandlin, 1997; Gaston & Blackburn, 2000; Willig, Kaufman & Stevens, 2003; Hillebrand, 2004). An obstacle in the search for the primary cause of this latitudinal gradient is the ever-increasing number of...
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ژورنال
عنوان ژورنال: Biology Letters
سال: 2013
ISSN: 1744-9561,1744-957X
DOI: 10.1098/rsbl.2013.0778