Effects of Habitat Rehabilitation Activities on Fish Assemblages and Populations in the Kootenai River, Idaho PDF Download
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Author: Carson J. Watkins
Publisher:
ISBN:
Category : Fish communities
Languages : en
Pages : 174
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Book Description
The Kootenai River supports some of the Pacific Northwest's most important cultural and recreational fishery resources. Lotic fishes have been substantially influenced by alteration to the course and function of large rivers throughout the world. Like many large river systems, the Kootenai River has been degraded by extensive water development and land use activities that have disrupted its function and integrity. As such, managers have attempted to rehabilitate degraded lotic habitats to support a variety of fish assemblages. The Kootenai River is one such large river where managers are improving habitat conditions for native fishes. I investigated spatial variation in fish assemblage structure and the influence of habitat on fish assemblages and species-specific occurrence and relative abundance within the context of an ongoing habitat rehabilitation project. In addition, I evaluated the sampling effort required to estimate various levels of species richness to guide future monitoring efforts of fishes in the Kootenai River. Fishes were collected throughout the braided reach of the Kootenai River during the summers of 2012 and 2013 to evaluate patterns in fish assemblage and population structure among rehabilitation and reference sites. In general, I found that fish assemblage structure varied among sites and that native fishes had high spatial association with one another. I identified several environmental variables associated with the occurrence and relative abundance of native species and evaluated the effect of those variables. My research also provided insight on sampling effort requirements to achieve target levels of species richness that will help fishery scientists be efficient during monitoring efforts. My results provide guidance and valuable information on the spatial occurrence of fishes in the Kootenai River and on habitat use patterns that can be used to design future rehabilitation projects to benefit native species. In addition, my evaluation of sampling effort requirements will help managers to develop realistic sampling objectives and optimize protocols for evaluating the effects of habitat rehabilitation on fish assemblages in the Kootenai River.
Author: Carson J. Watkins
Publisher:
ISBN:
Category : Fish communities
Languages : en
Pages : 174
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Book Description
The Kootenai River supports some of the Pacific Northwest's most important cultural and recreational fishery resources. Lotic fishes have been substantially influenced by alteration to the course and function of large rivers throughout the world. Like many large river systems, the Kootenai River has been degraded by extensive water development and land use activities that have disrupted its function and integrity. As such, managers have attempted to rehabilitate degraded lotic habitats to support a variety of fish assemblages. The Kootenai River is one such large river where managers are improving habitat conditions for native fishes. I investigated spatial variation in fish assemblage structure and the influence of habitat on fish assemblages and species-specific occurrence and relative abundance within the context of an ongoing habitat rehabilitation project. In addition, I evaluated the sampling effort required to estimate various levels of species richness to guide future monitoring efforts of fishes in the Kootenai River. Fishes were collected throughout the braided reach of the Kootenai River during the summers of 2012 and 2013 to evaluate patterns in fish assemblage and population structure among rehabilitation and reference sites. In general, I found that fish assemblage structure varied among sites and that native fishes had high spatial association with one another. I identified several environmental variables associated with the occurrence and relative abundance of native species and evaluated the effect of those variables. My research also provided insight on sampling effort requirements to achieve target levels of species richness that will help fishery scientists be efficient during monitoring efforts. My results provide guidance and valuable information on the spatial occurrence of fishes in the Kootenai River and on habitat use patterns that can be used to design future rehabilitation projects to benefit native species. In addition, my evaluation of sampling effort requirements will help managers to develop realistic sampling objectives and optimize protocols for evaluating the effects of habitat rehabilitation on fish assemblages in the Kootenai River.
Author: Philip R. Branigan
Publisher:
ISBN: 9781369455922
Category : Fish habitat improvement
Languages : en
Pages : 84
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Book Description
Fish and microhabitat data were collected at 542 locations in the Kootenai River, Idaho, during 2014 and 2015 to evaluate the effects of habitat rehabilitation on the fish assemblage. Samples were collected from locally-treated and locally-untreated areas of the river to investigate habitat conditions related to the occurrence and relative abundance of fishes. Fishes sampled from backwaters composed 71% of the overall catch and 84% of the catch from locally-untreated areas of the river. Assemblage-level ordinations and population-level regression models suggested that water depth and current velocity were the most important microhabitat variables influencing fish assemblage structure. Specifically, shallow habitats with low current velocities were important for native fishes and likely serve as rearing areas. These microhabitat conditions typically characterize backwater and channel-margin habitats that are vulnerable to anthropogenic perturbation. Conserving these habitats in large, regulated rivers would enable natural channel forming processes for the benefit of native fishes.
Author: United States. Bureau of Sport Fisheries and Wildlife
Publisher:
ISBN:
Category : Fish-culture
Languages : en
Pages : 32
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Book Description
Author: Richard L. Wallace
Publisher:
ISBN: 9781934874356
Category : Fishes
Languages : en
Pages : 216
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Book Description
Author:
Publisher:
ISBN:
Category : Fish habitat improvement
Languages : en
Pages : 342
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Book Description
Author: The Law The Law Library
Publisher: Createspace Independent Publishing Platform
ISBN: 9781729665817
Category :
Languages : en
Pages : 208
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Book Description
Endangered and Threatened Wildlife and Plants - Revised Designation of Critical Habitat for Bull Trout in the Coterminous United States (US Fish and Wildlife Service Regulation) (FWS) (2018 Edition) The Law Library presents the complete text of the Endangered and Threatened Wildlife and Plants - Revised Designation of Critical Habitat for Bull Trout in the Coterminous United States (US Fish and Wildlife Service Regulation) (FWS) (2018 Edition). Updated as of May 29, 2018 We, the U.S. Fish and Wildlife Service, are revising critical habitat for the bull trout (Salvelinus confluentus) under the Endangered Species Act of 1973, as amended (Act). We are designating a total of 31,750.8 km (19,729.0 mi) of streams (which includes 1,213.2 km (754.0 mi) of marine shoreline) and are designating a total of 197,589.2 ha (488,251.7 ac) of reservoirs and lakes. The areas designated as critical habitat are located in the States of Washington, Oregon, Nevada, Idaho, and Montana. This book contains: - The complete text of the Endangered and Threatened Wildlife and Plants - Revised Designation of Critical Habitat for Bull Trout in the Coterminous United States (US Fish and Wildlife Service Regulation) (FWS) (2018 Edition) - A table of contents with the page number of each section
Author: Simon Jennings
Publisher: John Wiley & Sons
ISBN: 1118688104
Category : Science
Languages : en
Pages : 432
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Book Description
This topical and exciting textbook describes fisheries exploitation, biology, conservation and management, and reflects many recent and important changes in fisheries science. These include growing concerns about the environmental impacts of fisheries, the role of ecological interactions in determining population dynamics, and the incorporation of uncertainty and precautionary principles into management advice. The book draws upon examples from tropical, temperate and polar environments, and provides readers with a broad understanding of the biological, economic and social aspects of fisheries ecology and the interplay between them. As well as covering 'classical' fisheries science, the book focuses on contemporary issues such as industrial fishing, poverty and conflict in fishing communities, marine reserves, the effects of fishing on coral reefs and by-catches of mammals, seabirds and reptiles. The book is primarily written for students of fisheries science and marine ecology, but should also appeal to practicing fisheries scientists and those interested in conservation and the impacts of humans on the marine environment. particularly useful are the modelling chapters which explain the difficult maths involved in a user-friendly manner describes fisheries exploitation, conservation and management in tropical, temperate and polar environments broad coverage of 'clasical' fisheries science emphasis on new approaches to fisheries science and the ecosystem effects of fishing examples based on the latest research and drawn from authors' international experience comprehensively referenced throughout extensively illustrated with photographs and line drawings
Author: Ray A. Williamson
Publisher: Springer Science & Business Media
ISBN: 146154145X
Category : Social Science
Languages : en
Pages : 404
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Book Description
Technology transfer has played an increasingly important role in historic preservation during the latter half of the twentieth century, a situation attested to by the undertaking of an important congressional study in 1986 that assessed the role of federal agencies in the field. In this book leading researchers update the earlier findings and contribute state-of-the-art reviews and evaluations of technological progress in their areas of expertise.
Author: John W. Sigler
Publisher: Caxton Press
ISBN: 9780870046117
Category : Nature
Languages : en
Pages : 815
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Book Description
The most recent and comprehensive study of the veriety of fish species that inhabit Idaho's waters. An exhaustive natural survey of all species known to exist in the Gem State, this encyclopedic book provides biologists, naturalists, students and anglers with the most complete reference of its kind. Complete with full color artwork and photography, maps, and taxonomic listings of all Idaho fish species.
Author: G.T.O LeBreton
Publisher: Springer Science & Business Media
ISBN: 1402028334
Category : Science
Languages : en
Pages : 336
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Book Description
Modern North American sturgeons and paddlefish are the result of 100 million years of evolution. Once an integral part of aboriginal culture, their numbers were decimated by overfishing and habitat destruction during the past two centuries. This book details the extensive science aimed at helping these remarkable species recover from the brink of extinction, and describes the historical, biological, and ecological importance of North American sturgeon and paddlefish. The text is enhanced by photographs and detailed line drawings. This comprehensive volume will be an invaluable resource for researchers, educators, and consultants, in academic and government settings, who work to further scientific understanding of these fishes. No other single compilation has documented current information in such detail.
