Rarity
著者
書誌事項
Rarity
（Population and community biology series, 13）
Chapman & Hall, 1994
- : hbk
- : pbk
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注記
Bibliography: p. [164]-192
Includes indexes
内容説明・目次
- 巻冊次
-
: hbk ISBN 9780412475009
内容説明
Population and community biology have been based largely on studies of abundant and widespread species. Most species are neither. This study draws together information from different disciplines on rarity. It draws general principles, focusing on the definition and measurement of rarity, its spatial and temporal dynamics, and its causes and interactions with conservation. Rare species are of particular concern to conservation because they tend to have a greater probability of extinction. This book should be of interest to conservation biologists, ecologists, environmental scientists and animal behaviourists.
目次
- What is Rarity?
- Abundance and range sizes - measuring rarity
- The non-independance of abundance and range size
- Spatial dynamics
- Temoral dynamics
- Causes of rarity
- Conservation and rarity
- Where next?
- 巻冊次
-
: pbk ISBN 9780412475108
内容説明
To say you are writing about rarity is to invite two kinds of response. Either one provokes a discussion of what rarity is, or some comment on the complex ity of the subject. The objective of this book is to explore the nature of rarity, its complexity if you like, from one particular perspective on what rarity is. Primarily, it is an opportunity to review, to synthesize, and to question. The book is an attempt to draw together a vast body of literature, to extract from it some general principles, and to raise question marks over areas the founda tions of which appear to be either absent or crumbling. A perusal of prefaces suggests that they often dwell as long upon what a book is not about, as upon what it does concern. True to such a tradition, I should state that this is specifically not a book about conservation, although in some quarters anything about rarity is viewed as something about conser vation. Nor does it contain more than a passing reference to the undoubtedly important issues of the role of genetics in rarity. Examples have been drawn from a wide variety of taxa. They are, nonethe less, somewhat depauperate in cases from marine systems. In part this bias results from the unevenness of my familiarity with the literature, in part it perhaps also reflects differences in the questions asked and approaches to the study of communities and assemblages in terrestrial and marine systems.
目次
Introduction. What is rarity? Appropiate measures. The non-interdependence of abundance and range. Complications of spatial scale. The dynamics of small populations and narrow ranges. Correlates of rarity. The patterns of rarity. Where next?
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