Fall Chinook Salmon Spawning in the Columbia River Near Hanford, 1947-- 1969.

Watson, Donald

doi:10.2172/4097497

Cited by 27 publications

(29 citation statements)

References 0 publications

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“…Watson (1970) found that Columbia River fall chinook salmon redds were detectable up to 6 weeks after their construction. The most accurate redd counts are made while the female is still protecting the redd.…”

Section: Direct Underwater Observation Redd Counting6mentioning

confidence: 97%

Methods for evaluating stream, riparian, and biotic conditions

Platts¹,

Megahan²,

Minshall³

1983

470

361

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IntermountainForest and Range rirnent Station m, UT 84401 General TechnicaiReport May 1983 This file was created by scanning the printed publication. Errors identified by the software have been corrected; however, some errors may remain. Eliminate the last parenthesis Equation 17The first and i&t brackets in the denominator are backwards Line 52, 1st Column 28.3 instead of 20.3 - Most stream habitat evaluation techniques currently in use today have not been tested to determine their validity in describing conditions and have been designed to optimize time rather than accuracy. The purpose of this report is to further standardize the way physical and biological attributes are measured and quantified and to shed light on the strengths and weaknesses of those attributes. This report discusses some of the environmental parameters that best measure and describe conditions existing in aquatic ecosystems. The precision and an estimation of the accuracy that can be expected when measuring many of these conditions are given.We are grateful to the Library Executor of the late Sir Ronald A. Fisher, to Dr. Frank Yates, and the Longman Group Ltd., London, for permission to reprint our table -19 from their book Statistical Tables for Biologicaf, Agriculture, and Medical Research (6th ed., 1974) The past decade has seen an increase in the number of studies evaluating the status and potential of streams as habitats for aquatic organisms. Stream inventories, monitoring, habitat research studies, assessments, channel and flow condition evaluations, and classification are used to evaluate this potential. The success or failure of these stream studies depends on the suitability, comprehensiveness, precision, and accuracy of measurements used to obtain the data upon which final interpretations are based. These interpretations have been used by planners and decisionmakers on the assumption that they were derived from measurements that truly described stream habitat conditions and the resulting biotic community.Within the past decade measurements of stream habitat conditions, such as velocity, depth, and cover, have been incorporated into models designed to indicate fish standing crops and to assist in evaluating impacts from land management activities. Binns (1979) developed a Habitat Quality Index to predict trout standing crops in Wyoming streams. The USDI Fish and Wildlife Service (Cooperative In-stream Flow Group) uses a cluster of aquatic habitat descriptors in a predictive model to quantify the effects of change in streamflow on fish survival. Their Aquatic Habitat Evaluation Team also has developed an Aquatic Habitat Evaluation Procedures model (HEP) and Habitat Suitability Index model (HSI) for obtaining data and interpretation for use in decisionmaking. Wesche (1974) developed a cover rating mode1 that is used on Wyoming streams to determine aquatic habitat conditions and fish standing crops. Cooper (1976) employed an aquatic habitat survey model to measure stream channel conditions for information needed for land us...

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Section: Direct Underwater Observation Redd Counting6mentioning

confidence: 97%

Methods for evaluating stream, riparian, and biotic conditions

Platts¹,

Megahan²,

Minshall³

1983

470

361

View full text Add to dashboard Cite

show abstract

“…The relative contributionof upper river bright stocks to fall chinook salmon runs in the Columbia River increasedFrom about 24% of the total in the early 1980s to 50% to 60% of the total by 1988 (Daubleand Watson 1990 (Watson 1970. Dauble and Watson (1990) …”

Section: Anadromousspeciesmentioning

confidence: 99%

Literature and data review for the surface-water pathway: Columbia River and adjacent coastal areas

Walters¹,

Dirkes²,

Napier³

1992

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“…The relative contribution of up-river bright stocks to fall Chinook salmon runs in the Columbia River increased from about 24 percent of the total in the early 1980s, to 50 to 60 percent of the total by 1988 (Dauble and Watson 1990). Inundation of other mainstream Columbia spawning grounds by dams has increased the relative importance of the Hanford Reach to fall Chinook salmon production in the Columbia and Snake rivers (Watson 1970(Watson , 1973Dauble and Watson 1997). Operation of Priest Rapids Dam can result in frequent river level fluctuations exposing shoreline and cobble bars during low-flow periods.…”

Section: 87mentioning

confidence: 99%