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the virtual impossibility of extracting the many different species from a habitat with equal efficiency by a single method (e.g. Nef, 1960). 1.1 Population estimates Population estimates can be classified into a number of different types; the most convenient classification is that adopted by Morris (1955), although he used the terms somewhat differently in a later paper (1960). 1.1.1 Absolute and related estimates The animal numbers may be expressed as a density per unit area of the ground of the habitat. Such estimates are given by nearest neighbour and related techniques (Chapter 2), marking and recapture (Chapter 3), by sampling a known fraction of the habitat (Chapter 4-6) and by removal sampling and random walk techniques (Chapter 7). Absolute population The number of animals per unit area (e.g. hectare, acre). It is almost impossible to construct a budget or to study mortality factors without the conversion of population estimates to absolute figures, for not only do insects often move from the plant to the soil at different developmental stages, but the amount of plant material is itself always changing. The importance of obtaining absolute estimates cannot be overemphasized.
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- PublisherSpringer
- Publication date1987
- ISBN 10 0412307103
- ISBN 13 9780412307102
- BindingPaperback
- LanguageEnglish
- Edition number2
- Number of pages548
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Ecological Methods: With Particular Reference to the Study of Insect Populations
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Ecological Methods: With Particular Reference to the Study of Insect Populations
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23 x 16. Second edition reprinted. 524 Seiten. OKart. Ordnungsgemäß aus einer Universitäts-Bibliothek ausgesondert (Stempel, Rückenschild). Einbandecken berieben, sonst gut erhaltenes Exemplar. Sprache: Englisch Gewicht in Gramm: 800. Seller Inventory # 145850
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Ecological Methods: With Particular Reference to the Study of Insect Populations
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Condition: Very good. Dust Jacket Condition: No Dustjacket. 8vo pp. 524.paperback edition."the virtual impossibility of extracting the many different species from a habitat with equal efficiency by a single method (e.g. Nef, 1960). 1.1 Population estimates Population estimates can be classified into a number of different types; the most convenient classification is that adopted by Morris (1955), although he used the terms somewhat differently? book. Seller Inventory # 209831
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Ecological Methods: With Particular Reference to the Study of Insect Populations
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Ecological Methods: With Particular Reference to the Study of Insect Populations
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Chapman and Hall, London, 1991
ISBN 10: 0412307103
ISBN 13: 9780412307102
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Ecological Methods
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ISBN 10: 0412307103
ISBN 13: 9780412307102
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Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -the virtual impossibility of extracting the many different species from a habitat with equal efficiency by a single method (e.g. Nef, 1960). 1.1 Population estimates Population estimates can be classified into a number of different types; the most convenient classification is that adopted by Morris (1955), although he used the terms somewhat differently in a later paper (1960). 1.1.1 Absolute and related estimates The animal numbers may be expressed as a density per unit area of the ground of the habitat. Such estimates are given by nearest neighbour and related techniques (Chapter 2), marking and recapture (Chapter 3), by sampling a known fraction of the habitat (Chapter 4-6) and by removal sampling and random walk techniques (Chapter 7). Absolute population The number of animals per unit area (e.g. hectare, acre). It is almost impossible to construct a budget or to study mortality factors without the conversion of population estimates to absolute figures, for not only do insects often move from the plant to the soil at different developmental stages, but the amount of plant material is itself always changing. The importance of obtaining absolute estimates cannot be overemphasized. 552 pp. Englisch. Seller Inventory # 9780412307102
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