garth i murphy (39 risultati)

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

HRD. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

United States Department of the Interior, fish and wildlife service, Washington - 1955, special scientific report-fisheries N°137, plaquette in-4, 42 pages Très bon état - Pour les envois hors de France, la tafication «livre & brochure» pour les frais de port a disparue.Les frais de port annoncés correspondent à une moyenne. Ils seront calculés au plus juste en fonction du poids de votre article.

Paperback. Condizione: New. Print on Demand. This book explores oceanographic patterns and fish populations in the central Pacific Ocean, presenting the results of research conducted over several years. The author, a trained scientist, catalogs the results of thousands of hours of research at sea, observing fish behavior, bird populations, and plankton density across seasons and environments. The study synthesizes data on the abundance, location, and behavior of various tuna species in the central Pacific Ocean. It also provides insight into the larger food chain and ecosystems of the region, thereby contributing to our understanding of marine biology and the relationship between the abundance of different species in a given area and the amount of food available to them. Through this research, the author provides a detailed and evidence-based analysis of the factors influencing the distribution and behavior of tuna and other species in the central Pacific. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.

Paperback. Condizione: New. Print on Demand. Immerse yourself in the intriguing exploration of yellowfin tuna population dynamics and the challenges of assessing their abundance. This book delves into the fundamental problems of inferring population density from sample data, examining the inherent variability in longline catches. The author masterfully analyzes the distribution of yellowfin tuna in space, revealing their schooling behaviors and the impact of aggregation on catch variability. Through empirical examination and statistical transformations, the book establishes a reliable method for estimating the variance of longline catches, providing a crucial foundation for setting fiducial limits. The insights gained from this work significantly contribute to the understanding of yellowfin tuna population dynamics and enhance the accuracy of abundance estimates, guiding sustainable management practices for this valuable marine resource. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.

Paperback. Condizione: New. Print on Demand. This book investigates a group of deep-swimming tuna in the central Pacific Ocean. Scientific fishing expeditions undertaken from January to June 1952 inform the author's findings, which suggest a link between winds and the abundance of yellowfin tuna. This connection is theorised to be due to upwelling, with southeast winds creating favorable conditions for yellowfin tuna north of the Equator, and northeast winds creating similar conditions to the south. Other species were examined, including albacore, bigeye, and skipjack tuna, with the author observing trends in the sizes of the fish relative to their location. The book's findings provide valuable insights into the behavior and distribution of deep-swimming tuna species, making it a valuable resource for researchers, commercial fishers, and anyone interested in the ocean's ecosystems. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.

Paperback. Condizione: New. Print on Demand. This book delves into the fascinating world of tuna fishing in the central Pacific during the 1950s. It provides a detailed account of research expeditions undertaken by the U.S. Fish and Wildlife Service, focusing on the abundance, distribution, and environmental factors influencing the tuna population. The author meticulously analyzes catch data, presenting a unique glimpse into the dynamics of this important fishery, and its significance to the burgeoning American canning industry. The text offers valuable insights into the complex relationship between tuna populations and their environment, particularly exploring the influence of upwelling currents and oceanographic conditions on tuna distribution and abundance. Readers will learn about the various species of tuna targeted, their size, and their geographical variation across the vast expanse of the central Pacific. The book also sheds light on the practices and challenges of longline fishing, including the impact of shark damage on the catch and efforts to improve fishing gear. This comprehensive study serves as a valuable historical document, offering a detailed perspective on the early days of tuna fishing in the central Pacific, and the scientific understanding of this crucial fishery during a period of rapid industrial expansion. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.

Paperback. Condizione: New. Print on Demand. This book presents an interim progress report on an ongoing research project on longline fishing in the central Pacific. It discusses the methods used for longline fishing and presents the results of three cruises undertaken to investigate the distribution and abundance of deep-swimming tunas in the equatorial region. The book includes an analysis of various factors that might affect the efficiency of the gear and provides data on the vertical distribution of the tuna catches. The author concludes that the equatorial stocks of deep-swimming tunas represent a resource capable of supporting an American fishery. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.

Paperback. Condizione: New. Print on Demand. This book presents a comprehensive analysis of the catches of nine Japanese tuna longline expeditions conducted in the western equatorial Pacific between 1950 and 1951. The author examines the abundance of yellowfin, bigeye, and black marlin, exploring how these species are distributed across different latitudes and longitudes and how their presence relates to various factors in their environment, such as type of bait used, vessel efficiency, and water temperature. The book also delves deeper into the size frequencies of the different tuna species, providing insights into their ecological separation by size and habitat selection. By combining data from multiple expeditions, the author is able to identify patterns and trends in the abundance and distribution of these valuable fish species, contributing to our understanding of their biology and the dynamics of the marine ecosystem they inhabit. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.

Paperback. Condizione: New. Print on Demand. This book explores the deep-sea tuna fisheries of the central equatorial Pacific surveyed between 1950 and 1953. The author provides detailed information on fishing operations, geographical distribution of catches, and the size composition of the main tuna species. The in-depth analysis of the tuna population and the environmental factors that affect their distribution will be beneficial to fishery biologists and researchers interested in sustainable fishing practices and the conservation of marine resources. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.

paperback, Condizione: poor, California Academy of Sciences, 1966, 6-3/4"x10", staple-bound wraps, 84pp., lacks cover, quite musty so poor, $.

Leatherbound. Condizione: NEW. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. Reprinted from 1953 edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set and contains approximately 38 pages. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Language: English.

Leatherbound. Condizione: NEW. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. A perfect gift for your loved ones. Reprinted from 1955 edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set and contains approximately 28 pages. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Language: English.

Leatherbound. Condizione: NEW. BOOKS ARE EXEMPT FROM IMPORT DUTIES AND TARIFFS; NO EXTRA CHARGES APPLY. Leatherbound edition. Condition: New. Leather Binding on Spine and Corners with Golden leaf printing on spine. Bound in genuine leather with Satin ribbon page markers and Spine with raised gilt bands. Pages: 56. A perfect gift for your loved ones. Reprinted from 1954 edition. NO changes have been made to the original text. This is NOT a retyped or an ocr'd reprint. Illustrations, Index, if any, are included in black and white. Each page is checked manually before printing. As this print on demand book is reprinted from a very old book, there could be some missing or flawed pages, but we always try to make the book as complete as possible. Fold-outs, if any, are not part of the book. If the original book was published in multiple volumes then this reprint is of only one volume, not the whole set. IF YOU WISH TO ORDER PARTICULAR VOLUME OR ALL THE VOLUMES YOU CAN CONTACT US. Resized as per current standards. Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Language: English Pages: 56.