Download or read book Economic Values and Impacts of Anadromous Sportfishing in Oregon Coastal Rivers written by Rebecca L. Johnson and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic Values of Anadromous Fishes in Oregon Rivers written by Oregon. Legislative Assembly. Interim Committee to Make a Study of the Economic Values of Anadromous Fishes in the Rivers of the State of Oregon and published by . This book was released on 1952 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book River Ecology and Management written by Robert Naiman and published by Springer Science & Business Media. This book was released on 2001-02-16 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the vast expanses of natural forests and the great populations of salmonids are harvested to support a rapidly expanding human population, the need to understand streams as ecological systems and to manage them effectively becomes increasingly urgent. The unfortunate legacy of such natural resource exploitation is well documented. For several decades the Pacific coastal ecoregion of North America has served as a natural laboratory for scientific and managerial advancements in stream ecology, and much has been learned about how to better integrate ecological processes and characteristics with a human-dominated environment. These in sightful but hard-learned ecological and social lessons are the subject of this book. Integrating land and rivers as interactive components of ecosystems and watersheds has provided the ecological sciences with impor tant theoretical foundations. Even though scientific disciplines have begun to integrate land-based processes with streams and rivers, the institutions and processes charged with managing these systems have not done so successfully. As a result, many of the watersheds of the Pacific coastal ecoregion no longer support natural settings for environmental processes or the valuable natural resources those processes create. An important role for scientists, educators, and decision makers is to make the integration between ecology and con sumptive uses more widely understood, as well as useful for effective management.

Download or read book Economic Values of Anadromous Fishes in Oregon Rivers written by Oregon. Legislative Assembly. Interim Committee to Make a Study of the Economic Values of Anadromous Fishes in the Rivers of the State of Oregon and published by . This book was released on 1952 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Five year Comprehensive Anadromous Fish Habitat Enhancement Plan for Oregon Coastal Rivers written by and published by . This book was released on 1985 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Prepared to provide current information concerning opportunities to improve the present productivity of anadromous salmonid habitat (primarily salmon and steelhead) on Bureau [of Land Management] lands in coastal rivers of Oregon. Habitat rehabilitation and/or enhancement work is done to increase populations of wild fish, which results in greater numbers of fish available for harvest by recreational and commercial fisheries important to Oregon's coastal economy, communities and populace in general. The proposed habitat projects listed in this report constitute a logical plan for orderly fish habitat development work by identified district priorities over a five-year period"--Page 1

Download or read book Influence of Forest and Rangeland Management on Anadromous Fish Habitat in Western North America written by Daniel D. Huppert and published by . This book was released on 1985 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic Values of Sport Fishing for Anadromous Fishes written by and published by . This book was released on 1952 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comprehensive Plan for Production and Management of Oregon s Anadromous Salmon and Trout General considerations written by Oregon. Anadromous Fish Section and published by . This book was released on 1982 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Bioeconomic Analysis of Altering Instream Flows written by Neal S. Johnson and published by . This book was released on 1987 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt: The growing demand for water in the arid regions of the West increases the need for optimal allocation of water among competing uses. An efficient allocation of water between instream and out-of-stream uses has been impeded by institutional constraints and the scarcity of information regarding instream flow benefits. The objectives of this thesis were to provide preliminary economic data on the value of instream water in "producing" recreational fishing and to examine the effect of forestry, agriculture, and livestock practices on temporal streamflow patterns and anadromous fish production. The steelhead trout (Salmo gairdneri) sport fishery within the John Day River basin in north-central Oregon provided the setting for this research. The interdisciplinary methodology employed in estimating the marginal value of water with respect to steelhead production consisted of two tasks. The first task involved valuing a marginal change in the quality of the steelhead recreational fishery. The contingent valuation method (CVM) was selected for this purpose. Both open- and closed-ended willingness-to-pay (WTP) questions were included in a questionnaire administered to John Day River steelhead anglers during the 1986/87 steelhead fishing season. Survey data were analyzed to arrive at individual and aggregate bid functions relating WTP to expected angling success rates. Results indicate that, under current conditions, the average angler is willing to pay approximately $7.20 to catch an additional steelhead. The second task of the instream water valuation methodology was directed at deriving a streamflow/steelhead production relationship. By including variables influencing steelhead production in a Ricker stock-recruitment model, it was possible to develop a model which could be estimated using linear regression techniques. Some difficulty arose, however, with interpretation of the model due to the unavailability of cohort escapement data and the subsequent use of standing crop data. While possibly masking the true magnitude of streamflow's effect on fish production, this drawback was not deemed limiting within the general context of the interdisciplinary methodology. Results of the biological model conformed to a priori expectations. Increases in summer and winter streamflows led to increased steelhead survival, whereas higher spring flows increased mortality levels. Other results indicate that the John Day Dam was responsible for a 31.5 percent decline in the population index for the 1969-1983 period. Combining the economic and biological results into one equation yielded an estimate of the marginal value of summer instream water in "producing" recreational steelhead angling. Similar equations were developed for winter and spring flows. The marginal value of water in producing recreational steelhead fishing within the John Day basin was estimated at $0.56 per acre-foot for summer flows, $0.046 for winter flows, and -$0.075 for spring flows. By including out-of-basin benefits, these values increased to $2.26, $0.19, and -$0.30, respectively. In comparison, water's value in irrigation within the John Day basin has been estimated at between $10 to $24 per acre-foot. However, nonuse values of steelhead, as well as the increased production of other fish species (such as spring chinook salmon) were not included in the instream water values. In addition, no attempt was made at valuing instream water's contribution to boating, camping, or other benefit-producing activities. A secondary objective of this thesis was to briefly examine the possible benefits accruing to other instream and out-of-stream users due to an alteration in streamflow patterns. In addition, the impact of activities by other resource users -- namely forestry, agriculture, and livestock production --on anadromous fish production was reviewed. Improper management practices by these activities can negatively impact the aquatic and riparian ecosystems. While no firm conclusions were drawn, it appears the quality of these ecosystems, as opposed to the amount of streamflow, has the largest marginal impact on anadromous fish populations.

Download or read book Klamath Hydroelectric Project FERC Project No 2080 027 Oregon and California written by and published by . This book was released on 2007 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Goals Objectives and Current Issues in Salmon Management in Oregon written by James Arthur Crutchfield and published by . This book was released on 1988 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Final Environmental Impact Statement for the Inclusion of Five Rivers in California s Wild and Scenic Rivers System in the National Wild and Scenic Rivers System written by United States. Heritage Conservation and Recreation Service and published by . This book was released on 1980 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comprehensive Plan for Production and Management of Oregon s Anadromous Salmon and Trout Coastal Chinook salmon plan written by Oregon. Anadromous Fish Section and published by . This book was released on 1982 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic Evaluation of Projects and Policies Affecting Anadromous Fish written by James D. Hastie and published by . This book was released on 1986 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anadromous fish populations in the Pacific Northwest have undergone substantial change throughout the past century. Historical periods of over-harvest and the construction of numerous dams throughout the region have contributed to declines in the runs of naturally spawning stocks. Management efforts to rebuild fish populations have focused on the restriction of harvest activities and the release of hatchery-reared salmon. A microcomputer simulation model is developed to estimate the economic impacts of management alternatives. In it, fish are passed throughout a network of nodes, according to parameters governing mortality and harvest. These parameters, and the node structure itself, are provided to the model by a user-specified input file. As a result, the model affords flexibility in meeting the modeling needs of differing salmonid stocks. The model's economic assessment capabilities are demonstrated through a case study of Rogue River spring chinook. Results of this exercise include estimates for the impacts of dam construction, hatchery releases, and changes in ocean and river harvest policies on the social value derived from harvest activities. The research also examines the redistribution of economic benefits associated with these policies. The impact of a recently constructed dam upon spring chinook fishermen is estimated at a loss of more than $10,600,000 over thirty years, given no hatchery supplementation. Current hatchery programs have mitigated the loss to fishermen, but whether they also offset their operating costs depends upon the particular harvest values employed. The value of providing an additional wild spawner to the basin is estimated to be roughly $300. Examination of various harvest alternatives indicates that restrictions placed on the commercial ocean fishery would be more successful in increasing the present value of harvests than would similar restrictions in the sport fishery. An important factor in this outcome is the higher value attributed to sport catch by currently accepted methods of valuation. Suggestions are made for improvements to the simulation model and the availability of information for use with it. Foremost among these is the need for improved specification of the marginal social value derived from salmon harvested in commercial and recreational fisheries.

Download or read book Environmental Issues in Pacific Northwest Forest Management written by Committee on Environmental Issues in Pacific Northwest Forest Management and published by National Academies Press. This book was released on 2000-07-28 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: People are demanding more of the goods, services, and amenities provided by the forests of the Pacific Northwest, but the finiteness of the supply has become clear. This issue involves complex questions of biology, economics, social values, community life, and federal intervention. Forests of the Pacific Northwest explains that economic and aesthetic benefits can be sustained through new approaches to management, proposes general goals for forest management, and discusses strategies for achieving them. Recommendations address restoration of damaged areas, management for multiple uses, dispute resolution, and federal authority. The volume explores the market role of Pacific Northwest wood products and looks at the implications if other regions should be expected to make up for reduced timber harvests. The book also reviews the health of the forested ecosystems of the region, evaluating the effects of past forest use patterns and management practices. It discusses the biological importance, social significance, and management of old-growth as well as late-succession forests. This volume will be of interest to public officials, policymakers, the forest products industry, environmental advocates, researchers, and concerned residents.

Download or read book Economic Values for Anadromous Fish Resources of Salmon River Middle Fork Salmon River and Big Creek written by Jerry Mallet and published by . This book was released on 1975 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Columbia River System Operation Review SOR written by and published by . This book was released on 1996 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: