Sustainable Fisheries Management
Title | Sustainable Fisheries Management PDF eBook |
Author | E. Eric Knudsen |
Publisher | CRC Press |
Pages | 706 |
Release | 2020-02-10 |
Genre | Nature |
ISBN | 0429526369 |
What has happened to the salmon resource in the Pacific Northwest? Who is responsible and what can be done to reverse the decline in salmon populations? The responsibly falls on everyone involved - fishermen, resource managers and concerned citizens alike - to take the steps necessary to ensure that salmon populations make a full recovery. T
The Behavior and Ecology of Pacific Salmon and Trout
Title | The Behavior and Ecology of Pacific Salmon and Trout PDF eBook |
Author | Thomas P. Quinn |
Publisher | UBC Press |
Pages | 392 |
Release | 2011-11-01 |
Genre | Nature |
ISBN | 0774842431 |
The Behavior and Ecology of Pacific Salmon and Trout explains the patterns of mate choice, the competition for nest sites, and the fate of the salmon after their death. It describes the lives of offspring during the months they spend incubating in gravel, growing in fresh water, and migrating out to sea to mature. This thorough, up-to-date survey should be on the shelf of everyone with a professional or personal interest in Pacific salmon and trout. Written in a technically accurate but engaging style, it will appeal to a wide range of readers, including students, anglers, biologists, conservationists, legislators, and armchair naturalists.
The Ocean Ecology of Pacific Salmon and Trout
Title | The Ocean Ecology of Pacific Salmon and Trout PDF eBook |
Author | |
Publisher | |
Pages | |
Release | 2018 |
Genre | |
ISBN | 9781934874455 |
Pacific Salmon Management
Title | Pacific Salmon Management PDF eBook |
Author | |
Publisher | |
Pages | 20 |
Release | 1991 |
Genre | Fishery management |
ISBN |
Pacific Salmon Life Histories
Title | Pacific Salmon Life Histories PDF eBook |
Author | Cornelis Groot |
Publisher | UBC Press |
Pages | 602 |
Release | 1991 |
Genre | Nature |
ISBN | 9780774803595 |
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 migrate immediately to salt water or spend one or more years in a river or lake before migrating. Migrations in the ocean are extensive during the feeding and growing phase, covering thousands of kilometres. After one or more years the maturing adults find their way back to their home river, returning to their ancestral breeding grounds to spawn. They die after spawning and the eggs in the gravel signify a new cycle. Upon this theme Pacific salmon have developed many variations, both between as well as within species. Pacific Salmon Life Histories provides detailed descriptions of the different life phases through which each of the seven species passes. Each chapter is written by a scientist who has spent years studying and observing a particular species of salmon. Some of the topics covered are geographic distribution, transplants, freshwater life, ocean life, development, growth, feeding, diet, migration, and spawning behaviour. The text is richly supplemented by numerous maps, illustrations, colour plates, and tables and there is a detailed general index, as well as a useful geographical index.
The Pacific Salmon Fisheries
Title | The Pacific Salmon Fisheries PDF eBook |
Author | James A. Crutchfield |
Publisher | Routledge |
Pages | 233 |
Release | 2013-10-18 |
Genre | Nature |
ISBN | 113598462X |
This study attributes the chronic economic distress of the valuable Pacific salmon industry not only to decline in catch but also to the economic problems of open access ocean fisheries. It analyzes salmon public management programs and proposes alternatives. Originally published in 1969
Pacific Salmon Fisheries
Title | Pacific Salmon Fisheries PDF eBook |
Author | John Nathan Cobb |
Publisher | |
Pages | 316 |
Release | 1921 |
Genre | Fish-culture |
ISBN |