Zobrazeno 1 - 10 of 21 pro vyhledávání: '"Philip J. Howell"'
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Akademický článek
Seasonal movement and distribution of fluvial adult bull trout in selected watersheds in the mid-Columbia River and Snake River basins.
Autor: Steven J Starcevich, Philip J Howell, Steven E Jacobs, Paul M Sankovich
Publikováno v: PLoS ONE, Vol 7, Iss 5, p e37257 (2012)
From 1997 to 2004, we used radio telemetry to investigate movement and distribution patterns of 206 adult fluvial bull trout (mean, 449 mm FL) from watersheds representing a wide range of habitat conditions in northeastern Oregon and southwestern Was
Externí odkaz: https://doaj.org/article/35a5aefded2446bcbf870aad11209ac8
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4
Life Histories, Demography, and Distribution of a Fluvial Bull Trout Population
Autor: Michael E. Colvin, Paul M. Sankovich, David V. Buchanan, Alan R. Hemmingsen, Philip J. Howell
Publikováno v: Transactions of the American Fisheries Society. 145:173-194
To describe the life histories and demography of a fluvial population of Bull Trout Salvelinus confluentus, we PIT-tagged and radio-tagged Bull Trout captured in Mill Creek, a tributary of the Walla Walla River (Washington–Oregon), during 1998–20
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::74c2f57a105ac4e07dc93f09f7e50fd8
https://doi.org/10.1080/00028487.2015.1105870
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5
An Evaluation of Redd Counts as a Measure of Bull Trout Population Size and Trend
Autor: Paul M. Sankovich, Philip J. Howell
Publikováno v: North American Journal of Fisheries Management. 32:1-13
The use of redd counts to monitor abundance and trend of bull trout Salvelinus confluentus has been clouded by uncertainties concerning measurement error, life history variation, and correspondence of redd counts to adult population size. We compared
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75ad6b38ac33f08c2181aed320b539d9
https://doi.org/10.1080/02755947.2011.649192
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6
Relationships between water temperatures and upstream migration, cold water refuge use, and spawning of adult bull trout from the Lostine River, Oregon, USA
Autor: Philip J. Howell, Jason B. Dunham, P. M. Sankovich
Publikováno v: Ecology of Freshwater Fish. 19:96-106
Howell PJ, Dunham JB, Sankovich PM. Relationships between water temperatures and upstream migration, cold water refuge use, and spawning of adult bull trout from the Lostine River, Oregon, USA. Ecology of Freshwater Fish 2010: 19: 96–106. This arti
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2cb56e576df712c4495b50fd2699a258
https://doi.org/10.1111/j.1600-0633.2009.00393.x
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7
Evolutionary effects of alternative artificial propagation programs: implications for viability of endangered anadromous salmonids
Autor: Casey Baldwin, Howard A. Schaller, Thomas D. Cooney, Peter F. Hassemer, Fred Utter, Charles E. Petrosky, Michelle M. McClure, Philip J. Howell, Richard W. Carmichael, Paul Spruell
Publikováno v: Evolutionary Applications. 1:356-375
Most hatchery programs for anadromous salmonids have been initiated to increase the numbers of fish for harvest, to mitigate for habitat losses, or to increase abundance in populations at low abundance. However, the manner in which these programs are
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ed77629bf3702cb407c53a766eca4d85
https://doi.org/10.1111/j.1752-4571.2008.00034.x
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8
Validation of Endoscopy for Determination of Maturity in Small Salmonids and Sex of Mature Individuals
Autor: Erica A. Swenson, Amanda E. Rosenberger, Philip J. Howell
Publikováno v: Transactions of the American Fisheries Society. 136:994-998
Fish maturity status, sex ratio, and age and size at first maturity are important parameters in population assessments and life history studies. In most empirical studies of these variables, fish are sacrificed and dissected to obtain data. However,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d47ab4e2be9fbaa8d4cfc676e6f30ffd
https://doi.org/10.1577/t06-193.1
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9
Effects of Wildfire and Subsequent Hydrologic Events on Fish Distribution and Abundance in Tributaries of North Fork John Day River
Autor: Philip J. Howell
Publikováno v: North American Journal of Fisheries Management. 26:983-994
Recent large wildfires in western states have fueled increasing concerns of resource managers and the public about the effects of fire, including risks to fish, particularly endangered species. However, there are few empirical studies on the response
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c972cd640af6050a43837c239d96299b
https://doi.org/10.1577/m05-114.1
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10
Status of native fishes in the western United States and issues for fire and fuels management
Autor: Danny C. Lee, Robert E. Gresswell, Rick Stowell, Philip J. Howell, Bruce E. Rieman, John N. Rinne, Michael K. Young, Dave Burns
Publikováno v: Forest Ecology and Management. 178:197-211
Conservation of native fishes and changing patterns in wildfire and fuels are defining challenges for managers of forested landscapes in the western United States. Many species and populations of native fishes have declined in recorded history and so
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3435bc6ffa3d8d04a94b17bced4f21c7
https://doi.org/10.1016/s0378-1127(03)00062-8
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