Kategoria BISAC: Nature >> Animals - Fish

Covering such important concepts as optimal gene diversity and the unfavourable influence of fishery and hatchery reproduction on the genetic structure of salmon populations, the authors have drawn together a huge wealth of...

Based on the research expertise of leading scientists, Commercial Fishing: the Wider Ecological Impacts provides a lively, timely and accessible account of fishing activities and their impacts on marine habitats, biodiversity and species of conservation concern. It covers fishing methods that range from trawling in the Antarctic to fishing with dynamite in the tropics.

Percid Fishes covers aspects such as systematics, morphology, biology, ecology, diseases and parasites and the economic importance of percid fisheries. Special emphasis is placed within the book on the complex relationship between this family of fishes and their environment and how they respond to...

The book's comprehensive contents include thorough coverage of the types and distribution of these fishes, their diversity and the environmental conditions and communities in which...

Expanded and updated to include an additional 44 species, this is a handy guide to those fishes that are likely to be observed by anybody visiting or diving on the coral reefs of the Caribbean, the Indian Ocean, and the Pacific to a depth of sixty meters. Accessible to amateur marine life enthusiasts, this book is the first comprehensive guide of its kind. It enables the reader to quickly identify 2,118 species of fish and includes over 2,500 color illustrations depicting the major forms of each species--male, female, immature, or geographical varieties. The text proceeds according to...

This interdisciplinary collection of essays examines the history of forestry in the United States, exploring the impact of the discipline on natural and human landscapes since the mid-nineteenth century. Through important articles that have helped define the field, it assesses the development of the forestry profession and the U.S. Forest Service, analyzes the political and scientific controversies that have marked forestry's evolution, and discloses the transformations in America's...

Pacific salmon are an important biological and economic resource of countries of the North Pacific rim. They are also a unique group of fish possessing unusually complex life histories. There are seven species of Pacific salmon, five occurring on both the North American and Asian continents (sockeye, pink, chum, chinook, and coho) and two (masu and amago) only in Asia.

The life cycle of the Pacific salmon begins in the autumn when the adult female deposits eggs that are fertilized in gravel beds in rivers or lakes. The young emerge from the gravel the following spring and will either...

Fishing is one of the most popular sports in Oklahoma, a state that boasts over 1,000 square miles of water. Now Fishes of Oklahoma, the only comprehensive handbook available for identifying fishes across the state of Oklahoma, is available to scientists and to anglers interested in knowing more about the fish they catch. Precise keys and clear black-and-white photos or drawings of every species allow for the ready identification of all Oklahoma fishes. Within each species account is a map showing where the fish can be found in the state, as well as information on its habitat and...