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Outmigration Survival Of Juvenile Spring Run Chinook Salmon In Relation To Physicochemical Conditions In The San Joaquin River
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Book Synopsis Outmigration Survival of Juvenile Spring-run Chinook Salmon in Relation to Physicochemical Conditions in the San Joaquin River by : Colby Hause
Download or read book Outmigration Survival of Juvenile Spring-run Chinook Salmon in Relation to Physicochemical Conditions in the San Joaquin River written by Colby Hause and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extirpation of Central Valley spring-run Chinook salmon ESU (Oncorhynchus tshawytscha) from the San Joaquin River is emblematic of salmonid declines across the Pacific Northwest. Previous telemetry studies monitoring reintroduction of threatened spring-run Chinook salmon to the San Joaquin River revealed low out-migration survival of juveniles from rehabilitated upriver habitats to the ocean. To evaluate the link between overall habitat conditions and survivorship, we combined state-of-the-art habitat mapping approaches (Fast Automated Limnological Measurements or "FLAMe") with classic acoustic telemetry technology along the 270 km emigration corridor in Spring of 2019. We used classification algorithms on FLAMe data to develop a zonation scheme for aquatic habitats along the mainstem San Joaquin River, including a portion of the Delta. Despite elevated flow conditions in 2019, outmigration survival of smolts was again comparatively low (5%). However, our habitat-based classification scheme described variation in survival of acoustic-tagged juvenile spring-run Chinook salmon better than other candidate models based on geography or distance. Two regional mortality sinks were evident along the water quality transect, revealing poor survival in areas with higher temperatures and low levels of chlorophyll-[alpha], fDOM, and turbidity. These findings illustrate an overall value in integrating simple classification frameworks to improve our understanding of habitat variation on survival dynamics of imperiled salmonid populations.
Book Synopsis The Regional Salmon Outmigration Study?survival and Migration Routing of Juvenile Chinook Salmon in the Sacramento-San Joaquin River Delta During the Winter of 2008?09 by : U.S. Department Of The Interior
Download or read book The Regional Salmon Outmigration Study?survival and Migration Routing of Juvenile Chinook Salmon in the Sacramento-San Joaquin River Delta During the Winter of 2008?09 written by U.S. Department Of The Interior and published by CreateSpace. This book was released on 2014-03 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Juvenile Chinook salmon (Oncorhynchus tshawytscha) emigrating from natal tributaries of the Sacramento River may use a number of migration routes to navigate the Sacramento-San Joaquin River Delta (hereafter called "the Delta"), each of which may influence their probability of surviving. We applied a mark-recapture model to data from acoustically tagged juvenile late fall-run Chinook salmon that migrated through the Delta during the winter of 2008-09 to estimate route entrainment, survival, and migration times through the Delta.
Book Synopsis An Analysis of Juvenile Chinook Salmon Outmigration Speed and Survival in Response to Habitat Features: Sacramento River from Knights Landing to Sacramento, California by : Natalie N McNair
Download or read book An Analysis of Juvenile Chinook Salmon Outmigration Speed and Survival in Response to Habitat Features: Sacramento River from Knights Landing to Sacramento, California written by Natalie N McNair and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Outmigration is an important life stage for Chinook salmon (Oncorhynchus tshawytscha) survival in the Sacramento River, and yet our understanding of their behavior and needs during this time is limited. To gain a better understanding of their survival and movement rates during outmigration, late fall run Chinook salmon smolts were tracked using acoustic telemetry techniques. Habitat features were measured and quantified throughout the study area to evaluate how Chinook salmon respond to key levee features including shade, instream woody material, and aquatic vegetation. The overall average movement speed through the entire study area was 0.77 m/s with an overall survival of 86%. Based on multiple linear regressions, vegetation was found to have the largest effect on speed with fish slowing down with increased vegetation cover. Shade, river mile, and velocity also had significant effects on movement speeds, but instream woody material was not significant. The result for woody material was surprising since it was anticipated to have a large impact on movement speeds. A positive correlation was found between faster fish movement speeds and higher survival. No evidence of diel movement patterns was found after releasing the fish. These finding can help managers create sites better designed to help Chinook salmon in the Sacramento River system. Results from this paper indicate that the type of woody material being installed might not be appropriate for this life stage of salmon.
Book Synopsis Movement and Survival of Juvenile Chinook Salmon in California's Central Calley by : Gabriel P. Singer
Download or read book Movement and Survival of Juvenile Chinook Salmon in California's Central Calley written by Gabriel P. Singer and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Riverine ecosystems around the world have undergone extensive anthropogenic alterations, often to the detriment of native aquatic biodiversity. Migratory fishes are particularly vulnerable to habitat fragmentation and degradation. For example, Chinook Salmon populations in the Sacramento and San Joaquin Rivers, CA have been declining for nearly a century. Its Mediterranean climate, position in a landscape dominated by urban and agricultural land use, and the presence of an inland delta that serves as the hub of California's vast water conveyance system, makes this a particularly perilous region for migrating juvenile salmon. These studies use acoustic telemetry as tool to investigate survival and routing of juvenile fall and spring-run Chinook salmon during their riverine and estuarine migratory phases in the Sacramento and San Joaquin Rivers. Survival to the ocean in these river systems is already lower relative to other Chinook Salmon populations in North American. Tracking studies included investigations of the sub-lethal effects of tagging fish with acoustic transmitters, movement ecology and survival of two distinct evolutionary significant units of Chinook Salmon during an historic drought, and the movement ecology and survival of a reintroduced population of Chinook Salmon in the San Joaquin River.
Book Synopsis The Regional Salmon Outmigration Study by : Jason G. Romine
Download or read book The Regional Salmon Outmigration Study written by Jason G. Romine and published by . This book was released on 2013 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Needs of Chinook Salmon, Oncorhynchus Tshawytscha in the Sacramento-San Joaquin Estuary by :
Download or read book The Needs of Chinook Salmon, Oncorhynchus Tshawytscha in the Sacramento-San Joaquin Estuary written by and published by . This book was released on 1987 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis River Estuarine Survival and Migration of Yearling Sacramento River Chinook Salmon (Oncorhynchus Tshawytscha) Smolts and the Influence of Environment by : Cyril J. Michel
Download or read book River Estuarine Survival and Migration of Yearling Sacramento River Chinook Salmon (Oncorhynchus Tshawytscha) Smolts and the Influence of Environment written by Cyril J. Michel and published by . This book was released on 2010 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Biological Opinion [that Address the Potential Effects on Sacramento River Winter-run Chinook Salmon from the Bureau of Reclamation's Proposed Los Vaqueros Project] by :
Download or read book Biological Opinion [that Address the Potential Effects on Sacramento River Winter-run Chinook Salmon from the Bureau of Reclamation's Proposed Los Vaqueros Project] written by and published by . This book was released on 1993 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Relationship Between Instream Flow, Adult Immigration, and Spawning Habitat Availability for Fall-run Chinook Salmon in the Upper San Joaquin River, California : Final Report by :
Download or read book The Relationship Between Instream Flow, Adult Immigration, and Spawning Habitat Availability for Fall-run Chinook Salmon in the Upper San Joaquin River, California : Final Report written by and published by . This book was released on 1994 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Out-Migration Survival of Wild Chinook Salmon (Oncorhynchus Tshawytscha) Smolts from Mill Creek Through the Sacramento River During Drought Conditions by : Jeremy Notch
Download or read book Out-Migration Survival of Wild Chinook Salmon (Oncorhynchus Tshawytscha) Smolts from Mill Creek Through the Sacramento River During Drought Conditions written by Jeremy Notch and published by . This book was released on 2017 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: Once emerged from the gravel after being spawned in natal streams, Chinook salmon spend many months rearing and growing in freshwater before undergoing smoltification and out-migrating to the ocean. This relatively short period of time is considered to be the most vulnerable and dangerous phase in the life cycle of a Pacific salmon. It is during this phase when smolts navigate around many anthropogenic structures and experience environmental stressors while making their way to the ocean. In California's Central Valley, the few remaining wild populations of Chinook salmon (Oncorhynchus tshawytscha) out-migrate through a highly modified riverine and estuary landscape characterized by leveed banks, altered flow and temperature regimes, transformed food webs, and limited floodplain and rearing habitat. Juvenile salmon smolts migrate through these landscapes within a relatively short period of time, requiring them to quickly adapt to changing water conditions and habitat types. Understanding the survival rates of wild smolts from source tributaries to the Pacific Ocean is essential in protecting and restoring these populations from the low abundances currently observed. When faced with drought conditions out-migrating smolts experience low flows, elevated water temperatures and high densities of predators while out-migrating to sea. In order to assess smolt survival during drought conditions in late spring (April-May), 304 wild smolts were acoustically tagged and tracked from Mill Creek (Tehama County) to the Pacific Ocean between 2013 and 2016. Total outmigration survival to the ocean was 0.3% during these years, with only one fish making it to the Golden Gate and the Pacific Ocean. These survival estimates are some of the lowest ever recorded for salmon out-migrating to the Pacific Ocean, with much of the mortality occurring within Mill Creek and the Sacramento River. Cumulative survival through Mill Creek (rkm 452--441) was 68% (+/-12 S.E.), and cumulative survival through the Sacramento River (rkm 441--203) was 7.6% (+/- 16 S.E.) These low survival rates are likely attributed to low flows in Mill Creek and the Sacramento River resulting from critically dry winters between 2013 and 2015, which were reduced even further by water diversions for agriculture in both Mill Creek and the Sacramento River. During periods of higher flow in 2016 survival rates dramatically increased, suggesting that more water in Mill Creek and the Sacramento River is necessary to improve in-river smolt migration survival during the late spring.
Book Synopsis Distribution and Joint Fish-Tag Survival of Juvenile Chinook Salmon Migrating Through the Sacramentro-San Joaquin River Delta, California, 2008 by : U.S. Department of the Interior
Download or read book Distribution and Joint Fish-Tag Survival of Juvenile Chinook Salmon Migrating Through the Sacramentro-San Joaquin River Delta, California, 2008 written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chinook salmon in California's Central Valley were decimated in the 19th and 20th centuries by overfishing, dam construction, channelization, population, and water diversions.
Book Synopsis Survival and Migration Route Probabilities of Juvenile Chinook Salmon in the Sacramento-San Joaquin River Delta During the Winter of 2009?10 by : U.S. Department Of The Interior
Download or read book Survival and Migration Route Probabilities of Juvenile Chinook Salmon in the Sacramento-San Joaquin River Delta During the Winter of 2009?10 written by U.S. Department Of The Interior and published by CreateSpace. This book was released on 2014-03 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Juvenile Chinook salmon (Oncorhynchus tshawytscha) emigrating from natal tributaries of the Sacramento River may use a number of migration routes to negotiate the Sacramento-San Joaquin River Delta (hereafter, "the Delta"), each of which may influence their probability of surviving. We applied a mark-recapture model to data from acoustically tagged juvenile late-fall Chinook salmon that migrated through the Delta during the winter of 2009-10 (hereafter, 2010). This report presents findings from our fourth year of research.
Book Synopsis The Status of the Sacramento River Spring-run Chinook Salmon by :
Download or read book The Status of the Sacramento River Spring-run Chinook Salmon written by and published by . This book was released on 1996 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Final Environmental Assessment for 10(a)(1)(A), Enhancement of the Species Permit Issuance for the Collection, Transport and Release of Spring-run Chinook Salmon for the San Joaquin River Restoration Program by : Rhonda Reed
Download or read book Final Environmental Assessment for 10(a)(1)(A), Enhancement of the Species Permit Issuance for the Collection, Transport and Release of Spring-run Chinook Salmon for the San Joaquin River Restoration Program written by Rhonda Reed and published by . This book was released on 2014 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The National Marine Fisheries Service (NMFS) is issuing a permit to the United States Fish and Wildlife Service (USFWS) an Endangered Species Act section 10(a)(1)(A) permit. The section 10(a)(1)(A) permit application requested the following: 1) collection and transport of spring-run Chinook juveniles or eggs from the Feather River Fish Hatchery (FRFH) for release into the San Joaquin River: 2) collection, transport, rearing, and release of spring-run Chinook from FRFH: 3) release of spring-run Chinook which were produced or reared at the Salmon Conservation and Research Facility (SCARF) from broodstock collected under Permit #14868 into the San Joaquin River; and 4) monitor the survival and returns of these fish to the San Joaquin River. As permitted collection, transport, rearing, and imprinting of up to 54,400 FRFH spring-run juvenile fingerlings or 80,000 FRFH spring-run eggs will occur annually. In addition, up to 300 ancillary broodstock yearling during years 2-3 and between 800-2000 ancillary broodstock in years 4-5 from SCARF are authorized for release into the San Joaquin River. Up to 100 adult broodstock are authorized for release directly into the San Joaquin River, only in years 4 and 5 of this permit. Up to 50,000 eggs or juveniles from SCARF are authorized to be placed in streamside incubators/net pens, tagged, ad clipped and released into the San Joaquin River. Up to 434,700 juveniles either from FRFH. SCARF. or the stream side incubators will be calcein marked prior to release"--Cover letter.
Book Synopsis Survival and Migration Dynamics of Juvenile Chinook Salmon (Oncorhynchus Tshawytscha) in the Sacramento-San Joaquin River Delta by : Russell W. Perry
Download or read book Survival and Migration Dynamics of Juvenile Chinook Salmon (Oncorhynchus Tshawytscha) in the Sacramento-San Joaquin River Delta written by Russell W. Perry and published by . This book was released on 2010 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Emigration of Juvenile Spring-run Chinook Salmon from Big Chico Creek in 1993-1994 by : Charles J. Brown
Download or read book The Emigration of Juvenile Spring-run Chinook Salmon from Big Chico Creek in 1993-1994 written by Charles J. Brown and published by . This book was released on 1995 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology and Conservation of Spring-run Chinook Salmon by : Elizabeth A. Campbell
Download or read book Ecology and Conservation of Spring-run Chinook Salmon written by Elizabeth A. Campbell and published by . This book was released on 1990 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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