Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Timothy L. Hoffnagle"'
Publikováno v:
North American Journal of Fisheries Management. 36:363-374
Ten brood years (BYs 1988–1990 and 1992–1998) of spring–summer Chinook Salmon Oncorhynchus tshawytscha smolts that were reared at Lookingglass Fish Hatchery (Oregon) and released from the Imnaha River Weir and Acclimation Facility were evaluate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4ef892e03c2c0edd313597d20ed7122
https://doi.org/10.1080/02755947.2015.1128999
https://doi.org/10.1080/02755947.2015.1128999
Autor:
Timothy L. Hoffnagle, Ewann A. Berntson, Robin S. Waples, Paul Moran, Stephen J. Boe, Debra L. Eddy, Donald M. Van Doornik
Publikováno v:
North American Journal of Fisheries Management. 33:693-706
Conservation efforts aimed at Pacific salmon (Oncorhynchus spp.) populations have frequently utilized artificial propagation in an attempt to increase fish abundance. However, this approach carries the risk of unwanted changes in the genetic characte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b46206b9fb9799c2801c539112ebf650
https://doi.org/10.1080/02755947.2013.790861
https://doi.org/10.1080/02755947.2013.790861
Autor:
Anindo Choudhury, Rebecca A. Cole, Mauritz Sterner, Roger J. Haro, Timothy L. Hoffnagle, Chad M. Linder, Bill Persons
Publikováno v:
Journal of Parasitology. 98:117-127
As part of the endangered humpback chub (HBC; Gila cypha ) Adaptive Management Program, a parasite survey was conducted from 28 June to 17 July 2006 in 8 tributaries and 7 adjacent sections of the main stem of the Colorado River, U.S.A. In total, 717
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28d12796e0aa21e4c6e13d892995cf79
https://doi.org/10.1645/ge-2538.1
https://doi.org/10.1645/ge-2538.1
Autor:
Peter J. Cleary, Timothy L. Hoffnagle, Patrick J. Keniry, Brian C. Jonasson, Fred R. Monzyk, Richard W. Carmichael
Publikováno v:
Transactions of the American Fisheries Society. 138:1093-1108
Smolts of spring Chinook salmon Oncorhynchus tshawytscha experience substantial mortality while migrating through free-flowing reaches of the Snake River basin before reaching Lower Granite Dam, the first dam encountered in the Columbia-Snake river h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bed48f34d46170fcb5fbd5cae21aafc
https://doi.org/10.1577/t08-108.1
https://doi.org/10.1577/t08-108.1
Publikováno v:
North American Journal of Fisheries Management. 28:148-164
We evaluated 16 years (1990–2005) of weir collection and spawning ground survey data to examine differences in run timing, spawn timing, and spawning distribution between naturally and hatchery-reared Chinook salmon Oncorhynchus tshawytscha in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95de90c2d1fffd205ff338493ee1f34b
https://doi.org/10.1577/m05-145.1
https://doi.org/10.1577/m05-145.1
Publikováno v:
Transactions of the American Fisheries Society. 135:1567-1577
Increasing hatchery raceway flow to a rate similar to that seen in nature exercises salmon in the expectation that improving swimming ability will result in better survival. However, insufficient water prevents most hatcheries from fully simulating n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d6cc08ddf40d29d459ab513d101489c
https://doi.org/10.1577/t05-246.1
https://doi.org/10.1577/t05-246.1
Autor:
Scott P. Hansen, Rebecca A. Cole, Anindo Choudhury, Timothy L. Hoffnagle, D.M. Heisey, J.A. Ahumada
Publikováno v:
Canadian Journal of Zoology. 84:1383-1394
Bothriocephalus acheilognathiYamaguti, 1934, a tapeworm known to be pathogenic to some fish species, has become established in the endangered humpback chub (Gila cypha Miller, 1964) in Grand Canyon, USA, following the tapeworm's introduction into the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a359e29d2b538ddc06c506757175ad9
https://doi.org/10.1139/z06-126
https://doi.org/10.1139/z06-126
Publikováno v:
Journal of Aquatic Animal Health. 18:184-193
Glen Canyon Dam has greatly altered the Colorado River in Grand Canyon. The Little Colorado River (LCR) provides a small refuge of seasonally warm and turbid water that is thought to be more suitable than the Colorado River for endangered humpback ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::24a7fc0a8051f0e48d3a1132cdcf5bf9
https://doi.org/10.1577/h05-046.1
https://doi.org/10.1577/h05-046.1
Autor:
Ted McKinney, Carole C. McIvor, Richard A. Valdez, Timothy L. Hoffnagle, William C. Leibfried
Publikováno v:
Ecological Applications. 11:686-700
A beach/habitat-building flow (i.e., test flood) of 1274 m3/s, released from Glen Canyon Dam down the Colorado River through Grand Canyon, had little effect on distribution, abundance, or movement of native fishes, and only short-term effects on dens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6382db33599cbfb04eb061fabdc3824b
https://doi.org/10.1890/1051-0761(2001)011[0686:eoatfo]2.0.co
https://doi.org/10.1890/1051-0761(2001)011[0686:eoatfo]2.0.co
Autor:
John C. Schmidt, Timothy L. Hoffnagle, Matthew Kaplinski, Roderic A. Parnell, Joseph E. Hazel, Paul E. Grams, Lawrence E. Stevens
Publikováno v:
Ecological Applications. 11:657-671
The 1996 controlled flood released from Glen Canyon Dam into the Colorado River was a small magnitude, short duration event compared to pre-dam floods. The controlled flood was of lesser magnitude than a 1.25-yr recurrence, and only 10% of the pre-da
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65e8b71aa03e3fdc3cac6437c9f78584
https://doi.org/10.1890/1051-0761(2001)011[0657:tcfigc]2.0.co
https://doi.org/10.1890/1051-0761(2001)011[0657:tcfigc]2.0.co