dorsal/arxiv
View SchemaThe Species Abundances Distribution in a new perspective
| Authors | M. Ravasz, A. Balog, V. Marko, Z. Neda |
|---|---|
| Categories | |
| ArXiv ID | q-bio/0502029 |
| URL | https://arxiv.org/abs/q-bio/0502029 |
Abstract
Studies on distribution, abundance and diversity of species revealed fascinating universalities in macroecology. Many of these patterns, like the species-area and range-abundance relationship or the year-to-year fluctuations in population sizes are expressed as power-law distributions, and indicate thus scale-invariance. The species abundance distribution (SAD) apparently shows this scale-free nature only for rare species, and its mathematical form is much debated. In the present work we propose a new mathematical expression for SAD which describes reasonable well most of the presently available large-scale experimental data and the results of the neutral models. This distribution function leads to an interesting relation between the total number of individuals, total number of species and the size of the most abundant species of the meta-community. This novel scaling relation is confirmed by computer simulations on neutral models.
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"abstract": "Studies on distribution, abundance and diversity of species revealed\nfascinating universalities in macroecology. Many of these patterns, like the\nspecies-area and range-abundance relationship or the year-to-year fluctuations\nin population sizes are expressed as power-law distributions, and indicate thus\nscale-invariance. The species abundance distribution (SAD) apparently shows\nthis scale-free nature only for rare species, and its mathematical form is much\ndebated. In the present work we propose a new mathematical expression for SAD\nwhich describes reasonable well most of the presently available large-scale\nexperimental data and the results of the neutral models. This distribution\nfunction leads to an interesting relation between the total number of\nindividuals, total number of species and the size of the most abundant species\nof the meta-community. This novel scaling relation is confirmed by computer\nsimulations on neutral models.",
"arxiv_id": "q-bio/0502029",
"authors": [
"M. Ravasz",
"A. Balog",
"V. Marko",
"Z. Neda"
],
"categories": [
"q-bio.PE",
"q-bio.QM"
],
"title": "The Species Abundances Distribution in a new perspective",
"url": "https://arxiv.org/abs/q-bio/0502029"
},
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