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The Commonness, And Rarity, of Species

The Commonness, And Rarity, of Species F. w. PRESTON Preston Laboratories, Butler, Pennsylvania SECTION I. GENERAL will never obtain, and much of the present paper will center on this difficulty. Con- The purpose of this paper is to deduce, dition ( 1) wiii not usually obtain in the from a number of examples and from broadest sense, and needs a moment's theoretical considerations, some plausible consideration. general law as to how abundance or com- A geologist sampling an ore-body, monness is distributed among species. Ex- whose boundaries have been delimited perimentally, this could be done by mak- accurately by previous exploration, has a ing a complete census of every species, known "universe" and merely needs in- but, with rare exceptions, this procedure formation on composition. His universe is quite impractical. We therefore at- is permanent. But in ecological work, tempt to deduce the "universe" from a the "universe" changes rapidly. The sample. moths flying tonight are not those that Commonness, as understood by ecolo- flew a month ago, or wiii fly a month gists, has several rather different mean- hence. Those flying this year are a ings: we are here concerned with ( 1) vastly different association from those the total number of living individuals http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Ecology Wiley

The Commonness, And Rarity, of Species

Ecology , Volume 29 (3) – Jan 1, 1948

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References (5)

Publisher
Wiley
Copyright
© Society for Community Research and Action
ISSN
0012-9658
eISSN
1939-9170
DOI
10.2307/1930989
Publisher site
See Article on Publisher Site

Abstract

F. w. PRESTON Preston Laboratories, Butler, Pennsylvania SECTION I. GENERAL will never obtain, and much of the present paper will center on this difficulty. Con- The purpose of this paper is to deduce, dition ( 1) wiii not usually obtain in the from a number of examples and from broadest sense, and needs a moment's theoretical considerations, some plausible consideration. general law as to how abundance or com- A geologist sampling an ore-body, monness is distributed among species. Ex- whose boundaries have been delimited perimentally, this could be done by mak- accurately by previous exploration, has a ing a complete census of every species, known "universe" and merely needs in- but, with rare exceptions, this procedure formation on composition. His universe is quite impractical. We therefore at- is permanent. But in ecological work, tempt to deduce the "universe" from a the "universe" changes rapidly. The sample. moths flying tonight are not those that Commonness, as understood by ecolo- flew a month ago, or wiii fly a month gists, has several rather different mean- hence. Those flying this year are a ings: we are here concerned with ( 1) vastly different association from those the total number of living individuals

Journal

EcologyWiley

Published: Jan 1, 1948

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