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Author: W. R. Pollard Publisher: Madeira Park, B.C. : Harbour Pub. ISBN: Category : Nature Languages : en Pages : 48
Book Description
A must for biologists, resource assessment workers, forestry workers, salmon enhancement groups, naturalists, fisheries students and members of the public interested in fisheries projects.
Author: W. R. Pollard Publisher: Madeira Park, B.C. : Harbour Pub. ISBN: Category : Nature Languages : en Pages : 48
Book Description
A must for biologists, resource assessment workers, forestry workers, salmon enhancement groups, naturalists, fisheries students and members of the public interested in fisheries projects.
Author: Robert J. McConnell Publisher: Forgotten Books ISBN: 9780243900183 Category : Science Languages : en Pages : 22
Book Description
Excerpt from Key to Field Identification of Anadromous Juvenile Salmonids in the Pacific Northwest Five species of Pacific salmon (pink, chum, sockeye, chinook, and coho); four species of trout (cutthroat, brown, Dolly Varden, and rainbow or steelhead); and other juvenile and adult fish 1 that may be mistaken for salmon or trout in fresh water are described in this key. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Sean Godwin Publisher: ISBN: 9781774511343 Category : Languages : en Pages : 0
Book Description
Pacific salmon have immense cultural, ecological and economic importance to the west coast of North America. Two salmon researchers have worked extensively in the field with this iconic group of fish and have developed the first comprehensive field identification guide for the seven Pacific salmon species--sockeye, coho, Chinook, pink, chum, steelhead and coastal cutthroat--across five life stages, with detailed illustrations by Joseph Tomelleri and photographs by Tavish Campbell.
Author: J. D. McPhail Publisher: University of Alberta ISBN: 0888644671 Category : Nature Languages : en Pages : 697
Book Description
The threat of deteriorating habitats and a loss of biodiversity make this reference work on the freshwater fishes of British Columbia more necessary than ever before. Eighty-one comprehensive species accounts aid accurate identification and consist of an illustration, the scientific and common names of the fish, its distinguishing characteristics, taxonomic comments, geographic distribution, a life-history summary, a habitat-use summary, and conservation comments. The book is a critical resource for biologists, naturalists, management and conservation officers, anglers, and members of the public who are concerned about our natural heritage. Foreword by Joseph S. Nelson.
Author: Richard Carstensen Publisher: Graphic Arts Books ISBN: 0882409298 Category : Nature Languages : en Pages : 429
Book Description
“Unlike the standard nature guides that explain how to recognize common animals, Nature stresses the web of interrelationships that link the regional flora and fauna. This affectionate examination of some of North America’s most spectacular surviving old-growth forests will delight backpackers and armchair naturalists.” —Los Angeles Times Book Review Everything you ever wanted to know about the flora and fauna of Southeast Alaska is contained in the third edition of this lively field guide to the natural world, from bears to banana slugs, mountains to murrelets. The authors, who are both Alaskan residents and biologists, combine scientific research with personal experiences to make a definitive field guide for residents of or visitors to Southeast Alaska. The unique features of the book include: In-depth information about how wildlife coexists with the environment Detailed discussions of mammals, birds, fish, invertebrates, fungi, and plants Detailed map of wilderness areas in Southeast Alaska More than 200 black-and-white illustrations A bibliography, list of common and scientific names, and an index New to this edition: More than 100 new illustrations, many never before published, as well as new maps and photos Major expansion of sections on geology, old-growth forests, marine mammals, and amphibians Fifty-two new sidebars—written in the first person to give the text a more personal touch—that describe recent findings or experiences. Sweeping updates and elaborations to chapter narratives—often thanks to technology unknown in 1992. In-depth guide to Southeast Alaska’s flora and fauna; more than an identification manual, Nature explores how the species and habitats encountered in the woods and waters of Southeast Alaska fit into the bigger picture.
Author: Nichole K. Sather Publisher: ISBN: Category : Pacific salmon Languages : en Pages : 256
Book Description
The decline of many Pacific salmon stocks has stimulated interest in the early life history and habitat requirements of juvenile salmon. Although estuarine habitat associations of juvenile salmon have been investigated in many coastal areas of the eastern Pacific Ocean, until recently, little was known about juvenile salmonid ecology within the Straits of Juan de Fuca. During the Spring/Summer outmigration period in 2006 and 2007, I examined the early life history of the five species of anadromous salmon in the Dungeness River estuary on the north Olympic Peninsula, Washington. I sampled multiple spatial scales within several habitat types to characterize salmon distribution and habitat use. My results presented in this thesis are segregated into two components: 1) tidal marsh ecology of juvenile salmonids in the Dungeness River estuary, and 2) the landscape-scale distribution of juvenile salmonids within the Dungeness River estuary. I examined the population of juvenile salmonids within blind tidal sloughs near the vicinity of the Dungeness River delta. Salmonids were present within the tidal marshes throughout the entire outmigration period (e.g., March through July). Juvenile Chinook salmon (Oncorhynchus tshawytscha) were the most abundant salmonid species within the marshes. Based on the temporal distribution and size structure of juvenile Chinook salmon in the estuary I identified at least four life history types: 1) a fry strategy included a large pulse of fish emigrating from the river at a small size (e.g., 35-45mm FL) during late winter and early spring months; 2) the second group of fish was the least abundant group emigrating from the river from April through mid May at sizes ranging from 50-75mm FL; 3) the third group of migrants entered the estuary between from late spring through the summer months at larger sizes than the initial groups (e.g., 60-90mm FL); and 4) the final group of Chinook salmon included a stream-type yearling strategy. In addition to the four life history strategies identified for Chinook salmon, I detected at least three groups of chum salmon migrating into the estuary. These groups were distinguished by their size and timing of migration and are further described according to different rearing strategies. The distribution of juvenile salmonids was most strongly influenced by the degree of connectivity (i.e., distance) between the tidal marshes and the mouth of the Dungeness River. Habitat complexity and opportunity also governed the distribution of juvenile salmonids within the tidal marshes. I also sampled three regions of the estuary with a beach seine to investigate the nearshore distribution of juvenile salmonids within the Dungeness River estuary: the delta face, inner Bay, and outer Bay. Among the three regions, species composition was highly variable between 2006 and 2007. The most common salmonids encountered within the beach seine sites included Chinook salmon, chum salmon (O. kisutch), and pink salmon (O. gorbuscha). The relative abundance of salmonids was highest near the delta face and lowest within the outer bay area. The landscape-scale distribution and habitat use of juvenile salmonids within the Dungeness River estuary is largely influenced by ecosystem connectivity, but is also linked to biotic characteristics of the fish (e.g., life history type and fish size). Although the Dungeness includes hydrogeomorphic characteristics (e.g., steep river gradient, composition of sand spits in the estuary) unique to other Pacific Northwest watersheds, this system produces a variety of life history types comparable to other estuaries. Understanding the mechanisms that drive the distribution of juvenile salmonids within the Dungeness will supply local resource managers with a baseline with which to establish ecosystem restoration goals.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Numerous research tools and technologies are currently being used to evaluate fish passage and survival to determine the impacts of the Federal Columbia River Power System (FCRPS) on endangered and threatened juvenile salmonids, including PIT tags, balloon tags, hydroacoustic evaluations, radio telemetry, and acoustic telemetry. Each has advantages and disadvantages, but options are restricted in some situations because of limited capabilities of a specific technology, lack of detection capability downstream, or availability of adequate numbers of fish. However, there remains concern about the comparative effects of the tag or the tagging procedure on fish performance. The recently developed Juvenile Salmonid Acoustic Telemetry System (JSATS) acoustic transmitter is the smallest active acoustic tag currently available. The goal of this study was to determine whether fish tagged with the JSATS acoustic-telemetry tag can provide unbiased estimates of passage behavior and survival within the performance life of the tag. We conducted both field and laboratory studies to assess tag effects. For the field evaluation we released a total of 996 acoustic-tagged fish in conjunction with 21,026 PIT-tagged fish into the tailrace of Lower Granite Dam on 6 and 13 May. Travel times between release and downstream dams were not significantly different for the majority of the reaches between acoustic-tagged and PIT-tagged fish. In addition to the field evaluation, a series of laboratory experiments were conducted to determine if growth and survival of juvenile Chinook salmon surgically implanted with acoustic transmitters is different than untagged or PIT tagged juvenile Chinook salmon. Only yearling fish with integrated and non-integrated transmitters experienced mortalities, and these were low (
Author: W. R. Pollard
Author: W. R. Pollard
Author: Robert J. MacConnell
Author: Robert J. McConnell
Author: Canada. Department of Fisheries and Oceans
Author: Sean Godwin
Author: J. D. McPhail
Author: Richard Carstensen
Author: Nancy J. Kralik
Author: Nichole K. Sather
Author: