Martin a buzas (26 risultati)

Pamphlet. Condizione: Very Good. Vol 84, pp. 217-238, Maps, Illus, Extracted from orig vol, begins with title page, stapled & trimmed, thus is llike a pamphlet, VG.

Soft Cover. Condizione: Very Good. Softcovers, in very good condition.

Soft cover. Condizione: Very Good. No Jacket. 89 pp. Original brown covers. Some wearing to bottom edges. Small piece missing from top of pg. 3. Illust. w/ four b/w plates. Includes tables and figures.

Soft Cover. Condizione: Very Good. ORIGINAL PUBLICATION; Softcovers; in very good condition.

Soft cover. Condizione: Near Fine. Not ex-library. Smithsonian Contributions to Paleobiology, number 36. With 28 plates.

1986, Journals, Geology, Smithsonian Contributions to Paleobilogy, Number 60, Smithsonian Institution, 33 p., good + paperback.

Paperback. Condizione: Very Good. Very good. Softbound 4to. Smithsonian Contributions to Paleobiology, Number 36. 154pp. Index. B/w photos, maps. > Language: English | > Size: 4to | > Media/Binding: Soft cover |.

Original Wrappers. Condizione: Good. First Edition; First Edition. 73 pages. With plates, tables, diagrams & illustrations. With library stamps & labels. Slight wear to spine, covers & corners.; Ex-Library.

Paperback. Condizione: Very Good. Washington: Smithsonian Institution Press, 1986. Contributions to the Marine Sciences, No. 28. Maps, 634 pages. Large Paperback. Very Good.

Original Wrappers. Condizione: Good. First Edition; First Edition. 411 pages. Slight creasing to top right hand corner pages. With library stamps & labels. Spine, covers & corners somewhat worn. Slight creasing to top right hand corner back cover. Slight damage to top spine.; Ex-Library.

Original Wrappers. Condizione: Good. First Edition; First Edition. 382 pages. With maps. With library stamps & labels. Slight wear to spine, covers & corners.; Ex-Library.

Paperback. Condizione: VG. Spine not creased. Includes appendices, references, index. 563pp. Book.

4to, paperback, iv + 139pp. Good condition. General wear, sunned spine and edges, small 1/2in chip to surface at upper right front edge. Pictures available on request.

Softcover. Condizione: Very Good. Ex-Library with the usual markings. This item is soft-bound in brown wrappers with black printing on the covers and manuscript lettering on the spine. The binding is solid. The contnets are bright and clean with illustrations, with many of the pages unopened.

Washington 1981 first edition. Smithsonian. Two 4to wraps volumes. 898p. Light depository non-circulating library markings, no spine numbers, numbers on front cover; text clean. binding secure. Two volume set.

Hard Cover. Condizione: Good. No Jacket. This is a two volume set. Ex-library with the usual features. The interiors are clean and tight. Bindings and covers are good. These are soft cover books that have been rebound in hard cover library bindings. 898 pages. Ex-Library.

Condizione: Very Good. 139 pp., softcover, very good. - If you are reading this, this item is actually (physically) in our stock and ready for shipment once ordered. We are not bookjackers. Buyer is responsible for any additional duties, taxes, or fees required by recipient's country.

Hardcover. Condizione: New. Contents: Preface. 1. Introduction. 2. Density: mean and variance. 3. Normal and sampling distributions for fieldwork. 4. Confidence limits and intervals for density. 5. How many field samples? 6. Spatial distribution: the power curve. 7. Field sampling schemes. 8. Species proportions: relative abundances. 9. Species distributions. 10. Regression: occurrences and density. 11. Species occurrences. 12. Species diversity: the number of species. 13. Diversity indices. 14. SHE analysis. Appendices. References. Index. "The degradation of environments and the fate of their natural populations have become topics of great concern as scientists struggle to inventory as many endangered organisms as possible. But because of the number of organisms involved, biologists-often with limited background in statistical analysis-must frequently depend upon sampling to complete their task of estimating population parameters. "Surveying Natural Populations is a user-friendly primer to the essential survey methodologies of quantitative field ecology, or paleoecology, integrating the intuitive approach of the field researcher with the rational analytical tools of the statistician. The chapters guide the uninitiated step by step through such topics as estimating population densities, determining adequate sample sizes, estimating the relative abundance of species, and measuring and modeling diversity. Employing a single data set for clarity, the book demonstrates the application of a wide spectrum of statistical techniques to this model. A wealth of other examples from the 563 pp. …

Condizione: As New. Unread book in perfect condition.

Condizione: As New. Unread book in perfect condition.

Condizione: New.

Hardback. Condizione: New. second edition. Surveying Natural Populations is a user-friendly primer to the essential methodologies of quantitative field ecology or paleoecology. Combining the intuitive methods of the field researcher with the mathematical precision of the statistician, the volume determines, through real biodiversity and ecological examples, the necessary measures for a complete community assessment while clarifying the confusions between biological and statistical terminology. Focusing on underlying mathematical concepts, it describes how to complete incrementally a quantitative sampling of any recent or fossil population. The first half of Surveying Natural Populations explains the fundamentals of ecological assessment. Employing a single data set throughout, initial chapters navigate such topics as estimating densities, relative abundance, occurrences, the determination of adequate sample sizes and field sampling schemes. The second half covers the newest advances in biodiversity measurement. Through the use of information mathematics and decomposition, the authors mathematically examine the relationship among a number of proposed diversity indices and discard inappropriate measures.What remains is a simple, all-encompassing system called SHE analysis, in which species density, richness, information, and evenness are all shown to be related explicitly. This biodiversity data is then integrated into a simple graphic, a plot called a biodiversitygram, which provides the researcher with a cohesive descriptive and inferential tool to assess any community's biodiversity.…

Condizione: New.

Hardback. Condizione: New. second edition. Surveying Natural Populations is a user-friendly primer to the essential methodologies of quantitative field ecology or paleoecology. Combining the intuitive methods of the field researcher with the mathematical precision of the statistician, the volume determines, through real biodiversity and ecological examples, the necessary measures for a complete community assessment while clarifying the confusions between biological and statistical terminology. Focusing on underlying mathematical concepts, it describes how to complete incrementally a quantitative sampling of any recent or fossil population. The first half of Surveying Natural Populations explains the fundamentals of ecological assessment. Employing a single data set throughout, initial chapters navigate such topics as estimating densities, relative abundance, occurrences, the determination of adequate sample sizes and field sampling schemes. The second half covers the newest advances in biodiversity measurement. Through the use of information mathematics and decomposition, the authors mathematically examine the relationship among a number of proposed diversity indices and discard inappropriate measures.What remains is a simple, all-encompassing system called SHE analysis, in which species density, richness, information, and evenness are all shown to be related explicitly. This biodiversity data is then integrated into a simple graphic, a plot called a biodiversitygram, which provides the researcher with a cohesive descriptive and inferential tool to assess any community's biodiversity.…

Condizione: BUONO USATO. Smithsonian Miscellaneous Collections INGLESE Volume 149 n.1 della collana, inglese, pagine ancora intonse ed in buonissimo stato di conservazione, color avorio, arricchite da fig.e grafici in nero nei testi e 4 tavole f.t., copertina editoriale flessibile, con piccola scritta a penna al piatto anteriore, leggere ombrature ed alone scuro ai bordi anteriori, segni di usura per scaffalatura. Numero pagine 88.…

Washington 1980-1987 (code M-27).