Abstract
An unusual approach about richness and rarity of leaf-litter ant species is presented here from a dry forest reminiscent in Pantanal province (Chacoan subregion) suggesting the boundaries that defining local and regional scales for this particular ant community. We analysed the frequency of distribution of 170 ant species collected on 262 Winkler’s samples along Serra da Bodoquena National Park, Mato Grosso do Sul state, Brazil and described some ecological mechanisms that made the species richness estimates be highly influenced by species with low frequencies of records in an extent regional of a pristine dry forest. Bayesian inference was conducted to provide if the probability of latitudinal gradient was correlated with the species richness to define alpha diversity.
Highlights
Why this distribution of species abundances is so regularly observed among different taxonomic sets in geographically diverse systems is a question that has received considerable theoretical and empirical investigation [1,2,3,4,5].There is an abiding interest in the number of species in local communities, because species are fundamental biodiversity units [1,6]
What challenges our ability to interpret natural phenomena is that when we investigate what apparently is not correlated to any of the physical, climatic and taxocenotic characteristics involving the patterns of species distribution? In which situations and how often this lack of standards can occur on a local and regional scale?
The relationship between sample size and estimated species richness resulted in part because the number of rare species did not necessarily decrease with the increases of the sample size in this spectrum of samples
Summary
Why this distribution of species abundances is so regularly observed among different taxonomic sets in geographically diverse systems is a question that has received considerable theoretical and empirical investigation [1,2,3,4,5].There is an abiding interest in the number of species in local communities, because species are fundamental biodiversity units [1,6]. Why this distribution of species abundances is so regularly observed among different taxonomic sets in geographically diverse systems is a question that has received considerable theoretical and empirical investigation [1,2,3,4,5]. A major research agenda in ecology is to explain the geographic patterns of the species richness [7]. Others examine the species distribution changes related with elevation [9,10,11], asking whether and why there is a mid-elevation peak in diversity. What challenges our ability to interpret natural phenomena is that when we investigate what apparently is not correlated to any of the physical, climatic and taxocenotic characteristics involving the patterns of species distribution? What challenges our ability to interpret natural phenomena is that when we investigate what apparently is not correlated to any of the physical, climatic and taxocenotic characteristics involving the patterns of species distribution? In which situations and how often this lack of standards can occur on a local and regional scale?
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