Download or read book Ecological Methods written by T.R. Southwood and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Ecological Methods written by Sir Richard Southwood and published by . This book was released on 1971 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to the study of animal populations. The sampling programme and the measurement and description of dispersion. Absolute population estimates using marking techniques. Absolute population estimates by sampling a unit of habita - air, plant, plant products and vertebrate hosts. Absolute population estimates by sampling a unit of habita - soil and litter. Absolute population estimates by sampling a unit of habitar-fresh-water habitats. Relative methods of population measurement and the derivation of absolute estimates. Estimates based on products and effects in insects. Observational and experimental methods for the estimation of natality, mortality and dispersal. The construction, description and analysis of age-specific life-tabbles. Age-grouping of insects and time-specific life-tables. Experimental component analysis of population processes. The measurement of association between species and the description of a fauna. The estimation of productivity and the construction of an energy budget.

Download or read book Ecological Methods written by T. R. E. Southwood and published by . This book was released on 1975 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods written by T. R. E. Southwood and published by . This book was released on 1975 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods written by Peter A. Henderson and published by John Wiley & Sons. This book was released on 2016-02-03 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: 4th edition of this classic Ecology text Computational methods have largely been replaced by descriptions of the available software Includes procedure information for R software and other freely available software systems Now includes web references for equipment, software and detailed methodologies

Download or read book Ecological Methods written by Thomas R. Southwood and published by . This book was released on 1975 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods written by T. R. E. Southwood and published by . This book was released on 1971 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods written by T. R. E. Southwood and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods with Particular Reference to the Study of Insect Populations written by T. R. F. Southwood and published by . This book was released on 1978 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods written by and published by . This book was released on 1966 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods with Particular Reference to the Study of Insect Populations written by Barbara Priestley and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods written by and published by . This book was released on 1968 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods With Perticular Reference to the Study of Insect Populations written by Southwood T R E. and published by . This book was released on 1978 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods written by Southwood and published by . This book was released on 1973-01-01 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods written by Southwood T. R. E. and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ecological Methods written by T.E. Southwood and published by Springer. This book was released on 1998-12-01 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: This extensive third revision of Southwood's influential Ecological Methods retains the general objectives and style of the previous editions and extends its coverage to include more up-to-date methods, such as computational techniques, distance sampling, aquatic methods and GIS. In combining both theory and pratical methods this book provides unique coverage of an area of importance to students and researchers of ecology alike.

Download or read book Ecology of Insect Populations in Theory and Practice written by L. R. Clark and published by Springer. This book was released on 1974-10-31 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Population and environment; Numerical change in insect populations; Current theories to explain insect numbers; The study of natural populations; The further development of research on insect populations.