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Delivery of marine-derived nutrients to streambeds by Pacific salmon

John F. Rex, Ellen L. Petticrew
2008 Nature Geoscience  
We suggest that bacterial aggregation of salmon organic matter and inorganic particulate matter delivers nutrients to streambeds, and thus plays an integral role in nutrient cycling in Pacific salmon streams  ...  Organic material released from salmon supports surface-living bacteria, which have extracellular polymeric substances (EPS) capable of generating flocs by attaching salmon organic matter particles to silt  ...  Figure 1 1 The salmon-floc feedback loop.  ... 
doi:10.1038/ngeo364 fatcat:mxmytzdi45ao5glad2saw3y3ae

The effectiveness of hyposaline treatments against host-attached salmon lice

Michael Sievers, Frode Oppedal, Ellen Ditria, Daniel W. Wright
2019 Scientific Reports  
(Salmo salar), salmon louse (Lepeophtheirus salmonis) system.  ...  Subjecting salmon to fluctuating, repeat exposures did not influence efficacy.  ...  For example, copepodids at 1-dpi (days post-infection) are eliminated from salmon after exposure to freshwater (<1 ppt) for 1-3 h 41 , and a 3 h exposure at 4 ppt stopped copepodids establishing on salmon  ... 
doi:10.1038/s41598-019-43533-8 pmid:31061506 pmcid:PMC6502938 fatcat:tdqdxrsnlrbavnxzkhry6dkhse

Humpback whales feed on hatchery-released juvenile salmon

Ellen M. Chenoweth, Janice M. Straley, Megan V. McPhee, Shannon Atkinson, Steve Reifenstuhl
2017 Royal Society Open Science  
Whales were reported to be feeding on juvenile chum, Chinook and coho salmon, with photographic and video records of whales feeding on coho salmon.  ...  Within the last decade at hatchery release sites in Southeast Alaska, humpback whales have begun exploiting juvenile salmon, a previously undocumented prey.  ...  salmon moving between these areas.  ... 
doi:10.1098/rsos.170180 pmid:28791145 pmcid:PMC5541540 fatcat:snnjl6ohsbdndkmgpm6ysq2wwi

Ecosystem response to a salmon disturbance regime: Implications for downstream nutrient fluxes in aquatic systems

Sam J. Albers, Ellen L. Petticrew
2011 Limnology and Oceanography  
Recent work in salmon spawning streams has shown that sediment resuspended during nest construction flocculates with salmon organic matter to form suspended composite particles characterized by increased  ...  We stocked two sequential enclosures in the spawning channel with sockeye salmon (Oncorhynchus nerka) and established one upstream control enclosure.  ...  salmon.  ... 
doi:10.4319/lo.2012.57.1.0113 fatcat:yml6qj4iazaadg5s2r5uc6fcz4

Salmon-derived nitrogen delivery and storage within a gravel bed: Sediment and water interactions

John F. Rex, Ellen L. Petticrew
2010 Ecological Engineering: The Journal of Ecotechnology  
Post-spawning salmon carcasses are broadly recognized as a source of organic matter-and marinederived nutrients (MDN) in Pacific salmon streams, but MDN delivery and retention processes are not well understood  ...  Flocculation of salmon organic matter and inorganic sediment is presented as a delivery mechanism in spawning and post-spawning periods that helps to maintain ecological productivity within Pacific salmon  ...  Salmon stock enhancement programs recognize the importance of MDN returns as indicated by stream-fertilization programs that include salmon carcass drops or the addition of salmon carcass analogues.  ... 
doi:10.1016/j.ecoleng.2010.02.001 fatcat:icizd5vywzh67eryfwm4ybqwm4

N-acetylhistidine, a novel osmolyte in the lens of Atlantic salmon (Salmo salar L.)

Jeremy D. Rhodes, Olav Breck, Rune Waagbo, Ellen Bjerkas, Julie Sanderson
2010 American Journal of Physiology. Regulatory Integrative and Comparative Physiology  
Nacetylhistidine, a novel osmolyte in the lens of Atlantic salmon (Salmo salar L.).  ...  In conclusion, NAH has an important and novel role as a compatible osmolyte in salmon lens.  ...  Viability of salmon lenses in organ culture.  ... 
doi:10.1152/ajpregu.00214.2010 pmid:20660107 fatcat:vk4dvl7iz5cyxlr76nw6gok5zq

Using Salmon Survey and Commercial Fishery Data to Index Nearshore Rearing Conditions and Recruitment of Alaskan Sablefish

Ellen M. Yasumiishi, S. Kalei Shotwell, Dana H. Hanselman, Joseph A. Orsi, Emily A. Fergusson
2015 Marine and Coastal Fisheries  
We examined physical and biological indices from Pacific salmon Oncorhynchus spp. surveys and commercial fisheries to index nearshore rearing habitats used by age-0 and age-1 Sablefish Anoplopoma fimbria  ...  The best-fitting general linear model used to estimate age-2 Sablefish recruitment included chlorophyll-a concentration during late August and an index of juvenile Pink Salmon O. gorbuscha abundance during  ...  reviewers for their valuable feedback; Jordan Watson (NMFS Alaska Fisheries Science Center) for assistance with R software; and Andy Piston (Alaska Department of Fish and Game, Ketchikan) for providing Pink Salmon  ... 
doi:10.1080/19425120.2015.1047070 fatcat:2obz4shmxngp7lozlphccg6qbe

Characteristics of a Vibrio sp. associated with the "Hitra disease" of Atlantic salmon in Norwegian fish farms

K. Olav HOLM, Ellen STROM, Klara STENSVAG, Jan RAA, Trond JORGENSEN
1985 Gyobyo kenkyu - Fish pathology  
The haemoglobin content (g/100ml) of blood sampled from "Hitra diseased" and healthy atlantic salmon (Salmo salar) Table 2.  ...  Discussion Moribund atlantic salmon with the socalled "Hitra-disease" harbour a particular bacte rium which we have designated Vibrio sp. TEO.  ... 
doi:10.3147/jsfp.20.125 fatcat:xwy4cydkyffjjjp4auxi3z755e

Bidirectional delivery of organic matter between freshwater and marine systems: the role of flocculation in Pacific salmon streams

Ellen L. Petticrew, John F. Rex, Sam J. Albers
2011 Journal of The North American Benthological Society  
Acknowledgements We acknowledge the staff of the QRRC including Rick Holmes, Bill Best, and Laszlo Enyedy, field assistants who have worked on the salmon-based projects over the years and Fisheries and  ...  Anadromous 1 E-mail addresses: ellen@unbc.ca 2 john.rex@gov.bc.ca 3 albers@unbc.ca fish species, such as Pacific salmon (Oncorhynchus spp.), alewives (Alosa pseudoharengus), and Atlantic salmon (Salmo  ...  This result suggests that yearly variability in salmon numbers can strongly affect MDN retention in salmon-spawning stream ecosystems.  ... 
doi:10.1899/10-133.1 fatcat:asm5hrvnpbed5pdztl4nip3xzm

Effects of dietary beef, pork, chicken and salmon on intestinal carcinogenesis in A/J Min/+ mice

Christina Steppeler, Marianne Sødring, Bjørg Egelandsdal, Bente Kirkhus, Marije Oostindjer, Ole Alvseike, Lars Erik Gangsei, Ellen-Margrethe Hovland, Fabrice Pierre, Jan Erik Paulsen, François Blachier
2017 PLoS ONE  
In the present work, the novel A/ J Min/+ mouse was used to investigate the effects of dietary beef, pork, chicken, or salmon (40% muscle food (dry weight) and 60% powder diet) on Apc-driven intestinal  ...  In the small intestine, salmon intake resulted in a lower tumor size and load than did meat from terrestrial animals (beef, pork or chicken), while no differences were observed between the effects of white  ...  We also like to thank Jens Petter Wold and Frank Lundby from Nofima (Ås, Norway) for the LF-NMR analysis of salmon, and Nathalie Naud from the University of Toulouse (France) for the analyses of fecal  ... 
doi:10.1371/journal.pone.0176001 pmid:28426718 pmcid:PMC5398569 fatcat:txkq6nnm7za2zdnmcnmpsqw2gi

The influence of Pacific salmon decay products on near-field streambed sediment and organic matter dynamics: a flume simulation

John F. Rex, Ellen L. Petticrew, Sam J. Albers, Neil D. Williams
2014 Earth Surface Processes and Landforms  
Pacific salmon are biogeomorphic agents shown to induce positive feedbacks on their natal watersheds.  ...  The disturbance salmon create during redd construction has the potential to reduce stream productivity.  ...  salmon disturbance regime.  ... 
doi:10.1002/esp.3591 fatcat:rhlopiz26ngmjiyxx6bdlldii4

Disentangling individual- and population-scale processes within a latitudinal size gradient in sockeye salmon

Cameron Freshwater, Marc Trudel, Terry D. Beacham, Lyse Godbout, Chrys-Ellen M. Neville, Strahan Tucker, Francis Juanes
2016 Canadian Journal of Fisheries and Aquatic Sciences  
Growth immediately prior to capture will also reflect spatial variability in foraging conditions along the migratory corridor that is predicted to influence migrating salmon survival.  ...  Late growth Freshwater age Days at sea Age-2 Sockeye Salmon juveniles tend to be consistently larger than age-1 juveniles and may out-migrate from rearing lakes earlier in the year.  ... 
doi:10.1139/cjfas-2015-0344 fatcat:2ehb3dx5o5gx7lmu4tc4dtxxyu

Divergent migratory behaviours associated with body size and ocean entry phenology in juvenile sockeye salmon

Cameron Freshwater, Marc Trudel, Terry D. Beacham, Lyse Godbout, Chrys-Ellen M. Neville, Strahan Tucker, Francis Juanes
2016 Canadian Journal of Fisheries and Aquatic Sciences  
Life history of Sockeye Salmon (Oncorhynchus nerka). In Pacific Salmon 538 Life Histories. Edited by C. Groot and L. Margolis.  ...  The synchronous failure of 523 juvenile Pacific salmon and herring production in the Strait of Georgia in 2007 and the poor 524 return of sockeye salmon to the Fraser River in 2009. Mar. Coast.  ... 
doi:10.1139/cjfas-2015-0425 fatcat:alu6amrjjnhj7g2bc7ibgqipoa

Trends and Factors Influencing the Length, Compensatory Growth, and Size-Selective Mortality of Juvenile Bristol Bay, Alaska, Sockeye Salmon at Sea

Ellen M. Yasumiishi, Ed V. Farley, Gregory T. Ruggerone, Beverly A. Agler, Lorna I. Wilson
2016 Marine and Coastal Fisheries  
We thank Chuck Brazil and Fred West at the Alaska Department of Fish and Game for providing harvest, escapement, and age data for Bristol Bay Sockeye Salmon.  ...  Sockeye Salmon that survived to adulthood.  ...  Bristol Bay, Alaska, supports the world's largest Sockeye Salmon Oncorhynchus nerka fishery, contributing from 30% to 60% of the annual global harvest of Sockeye Salmon (FAO 2015) .  ... 
doi:10.1080/19425120.2016.1167793 fatcat:wvj2z3bberbrvgudcnhyzvkla4

The future looks like the past: Introgression of domesticated Atlantic salmon escapees in a risk assessment framework

Kevin A. Glover, Vidar Wennevik, Kjetil Hindar, Øystein Skaala, Peder Fiske, Monica F. Solberg, Ola H. Diserud, Terje Svåsand, Sten Karlsson, Lasse B. Andersen, Ellen S. Grefsrud
2020 Fish and Fisheries  
Approximately fifty years of Atlantic salmon production has left an unprecedented legacy of widespread introgression of domesticated escapees in wild Norwegian populations.  ...  We therefore conclude that so long as aquaculture production continues at its present level and form, there is a moderate-to-high risk of further introgression of domesticated salmon in many native populations  ...  As a consequence, domesticated salmon now display a wide range of genetic differences to wild salmon (Glover et al., 2017) .  ... 
doi:10.1111/faf.12478 fatcat:hiiwmvbmt5ddtau7zcwjcmo6pa
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