A 22 ha, 1S yeas old, diked permanent pasture in the Salmon River estuary in Lincoln County, Oregon, was chosen for a study to determine the potential for natural salt marsh restoration with dike breaching. Two undiked fragments of relatively undisturbed salt marsh, one at each end of the study...
Tidal wetland channels provide rearing habitat for juvenile Chinook salmon as they emigrate from freshwater habitat and prepare to enter the ocean. Widespread diking and drainage of estuarine marshes for agricultural and urban development may have contributed to a decline in salmon abundance in the Pacific Northwest, prompting efforts to...
"Final report to the U.S. Environmental Protection Agency. Funds supporting this study have been provided by Region 10 of the U.S. Environmental Protection Agency, Seattle, WA."
Anadromous coastal cutthroat trout Oncorhynchus clarkii clarkii may be highly dependent on estuaries, passing through them multiple times during their lifetime. However, few studies have investigated estuarine use by coastal cutthroat trout and it is often thought that estuaries serve primarily as migration corridors rather than rearing areas. We used...
A student report for a Civil Engineering 572 class, this document is an extensive description of the Salmon River estuary, including water flow, quality, predictions for the estuary’s future, and numerous charts and graphs.
Fish and wildlife species using the Area were identified. Information on occurrence, abundance, habitats, status, recreational or commercial use, and economic value of these species is presented.
The Siletz Estuary was studied in 1973 to determine seasonal
variations in tidal dynamics, water quality, and sediments.
Tidal ranges and times were measured and compared to predicted
values at two positions within the bay. Tidal ranges and times
were analyzed to determine the dampening and phasing conditions
within the...
Chinook salmon returns to the Columbia River basin have declined due to impacts of a growing human population, despite significant mitigation expenditures. Consequently, fisheries managers have become focused on recovery and long-term viability of at-risk populations. A viable population depends, in part, on the connectivity and quality of diverse habitat...
Oregon's estuaries are important ecosystems for scientific study. Consequently, knowledge of what research has been conducted helps us identify benchmarks and plan new projects. A comprehensive bibliography of published research, technical reports, local documents, and data sets is one means of recording this knowledge. For these reasons, the Guin Library...
Sediment samples were collected from eight sampling sites
along the Yaquina Estuary, Oregon from Yaquina Bay to Elk City near
the head of the estuary. Samples were collected in November 1973,
February 1974, May 1974 and August 1974 from two or three intertidal
levels depending on the magnitude of the...
The Umpqua River estuary was seined and gilinetted during the summer of 1972 to estimate the composition and distribution of fishes. The number of species collected at most sites averaged from four to six per seine haul and was relatively constant throughout the estuary. The number of fish
collected per...
This report discusses anticipated problems associated with the pollution of the Umpqua River estuary in Oregon. The method of studying these problems by oceanographical techniques is outlined. Proposed studies relating to the Umpqua River Basin are examined.
Oceanographic data collected in the Umpqua River Estuary, Oregon, during the period April 26-27, 1961, are tabulated. Temperature, salinity, velocity, and dissolved oxygen were observed at various depths over one tidal cycle at a mid-channel anchor station located near the mouth of the river.
Oceanographic data collected in the Umpqua River Estuary, Oregon, during the period December 14-15, 1960, are tabulated. Temperature, salinity and velocity were: measured from the surface to the bottom at approximately five-foot intervals at four stations in the estuary. Oxygen samples were collected at depth on four occasions.
Oceanographic data collected in the Umpqua River Estuary, Oregon, during the period January 25-26, 1961, are tabulated. Temperature, salinity, velocity, and oxygen were observed at various depths over one tidal cycle at one station. Temperature and salinity observations were made from the ocean to 11.5 miles upstream upon completion of...
Pacific Coast estuaries provide important rearing habitats leading to improved growth and survival for juvenile chinook salmon. However, research has suggested that juvenile salmon have little use for estuarine habitats in the Columbia River. To further understand salmonid recovery needs in estuaries, I compared historical and contemporary life history patterns...
In 1971 the Fish Commission of Oregon conducted a comprehensive study of the recreational use of marine food fish, shellfish, and other miscellaneous invertebrates in 16 Oregon estuaries. From March 1 through October 31, 1971, boat and shore anglers and tideflat users were interviewed for catch, effort, and origin data...
In 1971 the Fish Commission of Oregon conducted a comprehensive study of the recreational use of marine food fish, shellfish, and other miscellaneous invertebrates in 16 Oregon estuaries. From March 1 through October 31, 1971, boat and shore anglers and tideflat users were interviewed for catch, effort, and origin data...
In 1971 the Fish Commission of Oregon conducted a comprehensive study of the recreational use of marine food fish, shellfish, and other miscellaneous invertebrates in 16 Oregon estuaries. From March 1 through October 31, 1971, boat and shore anglers and tideflat users were interviewed for catch, effort, and origin data...
In 1971 the Fish Commission of Oregon conducted a comprehensive study of the recreational use of marine food fish, shellfish, and other miscellaneous invertebrates in 16 Oregon estuaries. From March 1 through October 31, 1971, boat and shore anglers and tideflat users were interviewed for catch, effort, and origin data...
In 1971 the Fish Commission of Oregon conducted a comprehensive study of the recreational use of marine food fish, shellfish, and other miscellaneous invertebrates in 16 Oregon estuaries. From March 1 through October 31, 1971, boat and shore anglers and tideflat users were interviewed for catch, effort, and origin data...
In 1971 the Fish Commission of Oregon conducted a comprehensive study of the recreational use of marine food fish, shellfish, and other miscellaneous invertebrates in 16 Oregon estuaries. From March 1 through October 31, 1971, boat and shore anglers and tideflat users were interviewed for catch, effort, and origin data...
In 1971 the Fish Commission of Oregon conducted a comprehensive study of the recreational use of marine food fish, shellfish, and other miscellaneous invertebrates in 16 Oregon estuaries. From March 1 through October 31, 1971, boat and shore anglers and tideflat users were interviewed for catch, effort, and origin data...
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...
During 1973 data was collected to analyze the seasonal variations of the tidal dynamics, water quality and sediments of the Alsea
Estuary. A summary of historical information with a list of all
known alterations to the estuary was made. A complete physical
description, including the geographical setting and mixing classification...
This report is one of a series prepared by the Oregon Department of Fish and Wildlife (ODFW) which summarizes the physical and biological data for selected Oregon estuaries. The reports are intended to assist coastal planners and resource managers in Oregon in fulfilling the inventory and comprehensive plan requirements of...
This report is one of a series prepared by the Oregon Department of Fish and Wildlife (ODFW) which summarizes the physical and biological data for selected Oregon estuaries. The reports are intended to assist coastal planners and resource managers in Oregon in fulfilling the inventory and comprehensive plan requirements of...
This report is one of a series prepared by the Oregon Department of Fish and Wildlife (ODFW) which summarizes the physical and biological data for selected Oregon estuaries. The reports are intended to assist coastal planners and resource managers in Oregon in fulfilling the inventory and comprehensive plan requirements of...
This report is one of a series prepared by the Oregon Department of Fish and Wildlife (ODFW) which summarizes the physical and biological data for selected Oregon estuaries. The reports are intended to assist coastal planners and resource managers in Oregon in fulfilling the inventory and comprehensive plan requirements of...
Tidal marshlands in the upper estuary ecotone provide essential habitat for
juvenile salmonids. In this environment, salmonids grow rapidly and acclimate to
saltwater. Worldwide, tidal marshes have been diked and drained to provide
agricultural and residential land. Tide gates are one-way doors integrated into
dike systems that prevent saltwater flooding...
Maps from the report "Modeling sea level rise impacts to Oregon’s tidal wetlands : Maps and prioritization tools to help plan for habitat conservation into the future.”
Maps from the report "Modeling sea level rise impacts to Oregon’s tidal wetlands : Maps and prioritization tools to help plan for habitat conservation into the future.”
Maps from the report "Modeling sea level rise impacts to Oregon’s tidal wetlands : Maps and prioritization tools to help plan for habitat conservation into the future.”
The mechanisms of mortality during critical life stages of fish are not well-understood and, for many species, it is not clear if the mechanisms are similar for naturally and artificially propagated individuals. For Chinook salmon (Oncorhynchus tshawytscha), natural fish potentially face negative interactions, such as competition, and survival disadvantages, such...
For the first objective of this thesis, we attempt to understand the role of water flow and directionality in determining steelhead (Oncorhynchus mykiss) and spring/summer and fall Chinook (O. tschawytscha) migration patterns within the Columbia River Estuary and plume by integrating recent advances in biotelemetry and environmental observation and forecasting...
Coastal cutthroat ecology: F-72-R-2 This document contains the initial results of a study initiated in 1965 to determine the magnitude of the cutthroat trout fishery on the Siuslaw River estuary, as well as the contribution of hatchery fish to the catch.
A study of the scales of Umpqua River spring chinook salmon was made from mid-September to December 1, 1951. The study was undertaken to determine the age composition and probable life history of spring Chinooks in this river. The study was made at the Oregon State College Fisheries Research Laboratory...
Epiphytic diatom assemblages in the intertidal zone of Yaquina
Bay and estuary were obtained from the following host macrophytes:
Zostera marina, Fucus evanescens, and species of Enteromorpha,
Polysiphonia, and Ulva. Samples were collected in September 1970
and in January and May 1971 from seven stations approximately evenly
spaced between the...